HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.

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NuSTAR Latest News

  • NuSTAR Caldb Update (18 Dec 2024)
    The NuSTAR FPM caldb was updated to version 20241216. This release includes a new clock correction file, v195. Please see the release notes for more details.
  • NuSTAR Caldb Update (26 Nov 2024)
    The NuSTAR FPM caldb was updated to version 20241126. This release includes a new clock correction file, v194. Please see the release notes for more details.
  • NuSTAR Cycle 11 now Accepting Proposals (21 Nov 2024)
    The due date for NuSTAR Cycle 11 proposal submission is Jan 29, 2025. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). For more information about this cycle, please visit the NuSTAR Proposal Page.
  • NuSTAR Caldb Update (05 Nov 2024)
    The NuSTAR FPM caldb was updated to version 20241104. This release includes a new clock correction file, v193. Please see the release notes for more details.
  • NuSTAR Caldb Update (16 Oct 2024)
    The NuSTAR FPM caldb was updated to version 20241015. This release includes a new clock correction file, v192. Please see the release notes for more details.
  • NuSTAR Caldb Update (01 Oct 2024)
    The NuSTAR FPM caldb was updated to version 20240930. This release includes a new clock correction file, v191. Please see the release notes for more details.
  • NuSTAR Caldb Update (17 Sep 2024)
    The NuSTAR FPM caldb was updated to version 20240916. This release includes a new clock correction file, v190. Please see the release notes for more details.
  • NuSTAR Caldb Update (27 Aug 2024)
    The NuSTAR FPM caldb was updated to version 20240826. This release includes a new clock correction file, v189. Please see the release notes for more details.
  • NuSTAR Caldb Update (12 Aug 2024)
    The NuSTAR FPM caldb was updated to version 20240812. This release includes a new clock correction file, v188. Please see the release notes for more details.
  • NuSTAR Caldb Update (29 Jul 2024)
    The NuSTAR FPM caldb was updated to version 20240729. This release includes a new clock correction file, v187. Please see the release notes for more details.
  • NuSTAR Caldb Update (19 Jul 2024)
    The NuSTAR FPM caldb was updated to version 20240715. This release includes a new clock correction file, v186. Please see the release notes for more details.
  • NuSTAR Caldb Update (01 Jul 2024)
    The NuSTAR FPM caldb was updated to version 20240701. This release includes a new clock correction file, v185. Please see the release notes for more details.
  • NuSTAR Caldb Update (18 Jun 2024)
    The NuSTAR FPM caldb was updated to version 20240618. This release includes a new clock correction file, v184. Please see the release notes for more details.
  • NuSTAR Caldb Update (20 May 2024)
    The NuSTAR FPM caldb was updated to version 20240520. This release includes a new clock correction file, v183. Please see the release notes for more details.
  • NuSTAR Caldb Update (06 May 2024)
    The NuSTAR FPM caldb was updated to version 20240506. This release includes a new clock correction file, v182. Please see the release notes for more details.
  • NuSTAR Cycle 10 Targets (22 Apr 2024)
    The list of NuSTAR targets recommended by the Cycle 10 peer review is now available. Cycle 10 observations will start to be routinely performed on June 1, 2024. Evaluations will be sent to all NuSTAR Cycle 10 proposal PIs in the coming weeks.
  • NuSTAR Caldb Update (22 Apr 2024)
    The NuSTAR FPM caldb was updated to version 20240422. This release includes a new clock correction file, v181. Please see the release notes for more details.
  • NuSTAR Caldb Update (16 Apr 2024)
    The NuSTAR FPM caldb was updated to version 20240405. This release includes a new clock correction file, v180. Please see the release notes for more details.
  • NuSTAR Caldb Update (26 Mar 2024)
    The NuSTAR FPM caldb was updated to version 20240325. This release includes a new clock correction file, v179. Please see the release notes for more details.
  • Important NuSTAR Caldb Update (21 Mar 2024)
    The NuSTAR FPM caldb was updated to version 20240311a. This release corrects 13 invalid files which existed in the NuSTAR FPM caldb from Feb. 29, 2024 to Mar. 20, 2024. Please see the release notes for details.
  • NuSTAR Caldb Update (11 Mar 2024)
    The NuSTAR FPM caldb was updated to version 20240311. This release includes a new clock correction file, v178. Please see the release notes for more details.
  • NuSTAR Caldb Update (29 Feb 2024)
    The NuSTAR FPM caldb was updated to version 20240229. This release includes a new clock correction file, v177, and a new gain and arf. Please see the release notes for more details.
  • NuSTAR Caldb Update (30 Jan 2024)
    The NuSTAR FPM caldb was updated to version 20240130. This release includes a new clock correction file, v176. Please see the release notes for more details.
  • NuSTAR Caldb Update (18 Jan 2024)
    The NuSTAR FPM caldb was updated to version 20240118. This release includes a new clock correction file, v175. Please see the release notes for more details.
  • NuSTAR Caldb Update (04 Jan 2024)
    The NuSTAR FPM caldb was updated to version 20240104. This release includes a new clock correction file, v174. Please see the release notes for more details.
  • NuSTAR Caldb Update (19 Dec 2023)
    The NuSTAR FPM caldb was updated to version 20231218. This release includes a new clock correction file, v173. Please see the release notes for more details.
  • NuSTAR Caldb Update (05 Dec 2023)
    The NuSTAR FPM caldb was updated to version 20231205. This release includes a new clock correction file, v172. Please see the release notes for more details.
  • NuSTAR Caldb Update (22 Nov 2023)
    The NuSTAR FPM caldb was updated to version 20231121. This release includes a new clock correction file, v171. Please see the release notes for more details.
  • NuSTAR Cycle 10 now Accepting Proposals (9 Nov 2023)
    The due date for NuSTAR Cycle 10 proposal submission is Jan 25, 2024. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). For more information about this cycle, please visit the NuSTAR Proposal Page.
  • NuSTAR Caldb Update (17 Oct 2023)
    The NuSTAR FPM caldb was updated to version 20231017. This release includes a new clock correction file, v170. Please see the release notes for more details.
  • NuSTAR Caldb Update (04 Oct 2023)
    The NuSTAR FPM caldb was updated to version 20231003. This release includes a new clock correction file, v169. Please see the release notes for more details.
  • NuSTAR Caldb Update (18 Sep 2023)
    The NuSTAR FPM caldb was updated to version 20230918. This release includes a new clock correction file, v168. Please see the release notes for more details.
  • NuSTAR Caldb Update (09 Sep 2023)
    The NuSTAR FPM caldb was updated to version 20230906. This release includes a new clock correction file, v167. Please see the release notes for more details.
  • NuSTAR Caldb Update (17 Aug 2023)
    The NuSTAR FPM caldb was updated to version 20230816. This release includes a new clock correction file, v166. Please see the release notes for more details.
  • NuSTAR Caldb Update (03 Aug 2023)
    The NuSTAR FPM caldb was updated to version 20230802. This release includes a new clock correction file, v165. Please see the release notes for more details.
  • NuSTAR Caldb Update (18 Jul 2023)
    The NuSTAR FPM caldb was updated to version 20230718. This release includes a new clock correction file, v164. Please see the release notes for more details.
  • NuSTAR Caldb Update (05 Jul 2023)
    The NuSTAR FPM caldb was updated to version 20230705. This release includes a new clock correction file, v163. Please see the release notes for more details.
  • NuSTAR Caldb Update (14 Jun 2023)
    The NuSTAR FPM caldb was updated to version 20230613. This release includes a new clock correction file, v162. Please see the release notes for more details.
  • NuSTAR Caldb Update (31 May 2023)
    The NuSTAR FPM caldb was updated to version 20230530. This release includes a new clock correction file, v161. Please see the release notes for more details.
  • NuSTAR Caldb Update (16 May 2023)
    The NuSTAR FPM caldb was updated to version 20230516. This release includes a new clock correction file, v160. Please see the release notes for more details.
  • NuSTAR Caldb Update (04 May 2023)
    The NuSTAR FPM caldb was updated to version 20230504. This release includes a new clock correction file, v159. Please see the release notes for more details.
  • NuSTAR Caldb Update (20 Apr 2023)
    The NuSTAR FPM caldb was updated to version 20230420. This release includes a new clock correction file, v158. Please see the release notes for more details.
  • NuSTAR Cycle 9 Targets (17 Apr 2023)
    The list of NuSTAR targets recommended by the Cycle 9 peer review is now available. Cycle 9 observations will start to be routinely performed on June 1, 2023. Evaluations will be sent to all NuSTAR Cycle 9 proposal PIs in the coming weeks.
  • NuSTAR Caldb Update (05 Apr 2023)
    The NuSTAR FPM caldb was updated to version 20230404. This release includes a new clock correction file, v157. Please see the release notes for more details.
  • NuSTAR Caldb Update (22 Mar 2023)
    The NuSTAR FPM caldb was updated to version 20230321. This release includes a new clock correction file, v156. Please see the release notes for more details.
  • NuSTAR Caldb Update (07 Mar 2023)
    The NuSTAR FPM caldb was updated to version 20230307. This release includes a new clock correction file, v155. Please see the release notes for more details.
  • NuSTAR Caldb Update (27 Feb 2023)
    The NuSTAR FPM caldb was updated to version 20230223. This release includes a new clock correction file, v154. Please see the release notes for more details.
  • NuSTAR Caldb Update (08 Feb 2023)
    The NuSTAR FPM caldb has been updated to version 20230208. This release includes a new clock correction file, v153. Please see the release notes for more details.
  • Update to the NuSTAR FAQ for bright sources (2 Feb 2023)
    The NuSTAR FAQ entry "What do I do if I have a bright source?" has been updated to include additional guidance on the usage of the statusexpr keyword in NuSTARDAS.
  • NuSTAR Caldb Update (24 Jan 2023)
    The NuSTAR FPM caldb has been updated to version 20230124. This release includes a new clock correction file, v152. Please see the release notes for more details.
  • NuSTAR Caldb Update (29 Dec 2022)
    The NuSTAR FPM caldb has been updated to version 20221229. This release includes a new clock correction file, v151. Please see the release notes for more details.
  • NuSTAR Cycle 9 now Accepting Proposals (7 Dec 2022)
    The due date for NuSTAR Cycle 9 proposal submission is Jan 26, 2023. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). For more information about this cycle, please visit the NuSTAR Proposal Page.
  • NuSTAR Caldb Update (30 Nov 2022)
    The NuSTAR FPM caldb has been updated to version 20221130. This release includes a new clock correction file, v150. Please see the release notes for more details.
  • NuSTAR Caldb Update (15 Nov 2022)
    The NuSTAR FPM caldb has been updated to version 20221115. This release includes a new clock correction file, v149. Please see the release notes for more details.
  • NuSTAR Caldb Update (19 Oct 2022)
    The NuSTAR FPM caldb has been updated to version 20221019. This release includes a new clock correction file, v148. Please see the release notes for more details.
  • NuSTAR Caldb Update (26 Sep 2022)
    The NuSTAR FPM caldb has been updated to version 20220926. This release includes a new clock correction file, v147. Please see the release notes for more details.
  • NuSTAR Caldb Update (14 Sep 2022)
    The NuSTAR FPM caldb has been updated to version 20220912. This release includes a new clock correction file, v146. Please see the release notes for more details.
  • NuSTAR Caldb Update (30 Aug 2022)
    The NuSTAR FPM caldb has been updated to version 20220829. This release includes a new clock correction file, v145. Please see the release notes for more details.
  • NuSTAR Caldb Update (16 Aug 2022)
    The NuSTAR FPM caldb has been updated to version 20220815. This release includes a new clock correction file, v144. Please see the release notes for more details.
  • NuSTAR Caldb Update (02 Aug 2022)
    The NuSTAR FPM caldb has been updated to version 20220802. This release includes a new clock correction file, v143. Please see the release notes for more details.
  • NuSTAR Caldb Update (06 Jul 2022)
    The NuSTAR FPM caldb has been updated to version 20220706. This release includes a new clock correction file, v142. Please see the release notes for more details.
  • NuSTAR Phase 2 proposal deadline extended (29 Jun 2022)
    The deadline for NuSTAR Cycle 8 Phase 2 (budget) proposals has been moved back by one week to July 6, 2022.
  • NuSTAR Caldb Update (08 Jun 2022)
    The NuSTAR FPM caldb has been updated to version 20220608. This release includes a new clock correction file, v141. Please see the release notes for more details.
  • NuSTAR Caldb Update (25 May 2022)
    The NuSTAR FPM caldb has been updated to version 20220525. This release includes a new clock correction file, v140. Please see the release notes for more details.
  • NuSTAR Caldb Update (10 May 2022)
    The NuSTAR FPM caldb has been updated to version 20220510. This release includes a new clock correction file, v139 and a new FPMA gain file, v.010. Please see the release notes for more details. Downloads are available from the Caldb page.
  • NuSTAR Caldb Update (27 Apr 2022)
    The NuSTAR FPM caldb has been updated to version 20220426. This release includes a new clock correction file, v138. Please see the release notes for more details.
  • NuSTAR Cycle 8 Targets (22 Apr 2022)
    The list of NuSTAR targets recommended by the Cycle 8 peer review is now available. Cycle 8 observations will start to be routinely performed on June 1, 2022. Evaluations will be sent to all NuSTAR Cycle 8 proposal PIs in the coming weeks.
  • NuSTAR Caldb Update (14 Apr 2022)
    The NuSTAR FPM caldb has been updated to version 20220413. This release includes a new clock correction file, v137. Please see the release notes for more details.
  • NuSTAR Caldb Update (28 Mar 2022)
    The NuSTAR FPM caldb has been updated to version 20220328. This release includes a new clock correction file, v136. Please see the release notes for more details.
  • NuSTAR Caldb Update (21 Mar 2022)
    The NuSTAR FPM caldb has been updated to version 20220316. This release includes a new clock correction file, v135. Please see the release notes for more details.
  • NuSTAR Caldb Update (02 Mar 2022)
    The NuSTAR FPM caldb has been updated to version 20220301. This release includes a new clock correction file, v134. Please see the release notes for more details.
  • NuSTAR Caldb Update (16 Feb 2022)
    The NuSTAR FPM caldb has been updated to version 20220215. This release includes a new clock correction file, v133. Please see the release notes for more details.
  • NuSTAR Caldb Update (04 Feb 2022)
    The NuSTAR FPM caldb has been updated to version 20220131. This release includes a new clock correction file, v132. Please see the release notes for more details.
  • Recent problem of NuSTAR stray light evaluation tool fixed (26 Jan 2022)
    Since early January this year the NuSTAR target constraint tool did not correctly report possible stray light contamination. The problem was discovered and fixed on January 26, 2022. Proposers may wish to rerun the tool.
  • NuSTAR Cycle 8 Due Date January 28, 2022 (24 Jan 2022)
    Phase-1 science proposals are due by 4:30 p.m. EST, January 28, 2022. Please see the Guide for Proposers and the Guidelines for Anonymous Proposals for more details.
  • NuSTAR Caldb Update (19 Jan 2022)
    The NuSTAR FPM caldb has been updated to version 20220118. This release includes a new clock correction file, v131. Please see the release notes for more details.
  • NuSTAR Caldb Update (05 Jan 2022)
    The NuSTAR FPM caldb has been updated to version 20220105. This release includes a new clock correction file, v130. Please see the release notes for more details.
  • NuSTAR Caldb Update (21 Dec 2021)
    The NuSTAR FPM caldb has been updated to version 20211221. This release includes a new clock correction file, v129. Please see the release notes for more details.
  • NuSTAR Cycle 8 now Accepting Proposals (8 Dec 2021)
    The due date for NuSTAR Cycle 8 proposal submission is Jan 28, 2022. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). For more information about this cycle, please visit the NuSTAR Proposal Page.
  • NuSTAR Caldb Update (02 Dec 2021)
    The NuSTAR FPM caldb has been updated to version 20211202. This release includes a new clock correction file, v128. Please see the release notes for more details.
  • Ten Years of High-Energy Universe in Focus: NuSTAR 2022 (17 Nov 2021)
    This conference will be held June 20-22, 2022, in Cagliari, Sardinia, Italy. Registration and abstract submission are now open.
  • NuSTAR Caldb Update (15 Nov 2021)
    The NuSTAR FPM caldb has been updated to version 20211115. This release includes a new clock correction file, v127. Please see the release notes for more details.
  • NuSTAR Caldb Update (04 Nov 2021)
    The NuSTAR FPM caldb has been updated to version 20211103. This release includes a new clock correction file, v126. Please see the release notes for more details.
  • Major NuSTAR Caldb Update (26 Oct 2021)
    The NuSTAR FPM caldb has been updated to version 20211020. This is a major update in the calibration of the NuSTAR observatory based on detailed analysis of more than nine years of observations of the Crab, utilizing both focused and stray light measurements. Please see the release notes for more details.
  • NuSTAR Caldb Update (06 Oct 2021)
    The NuSTAR FPM caldb has been updated to version 20211004. This release includes a new clock correction file, v125. Please see the release notes for more details.
  • NuSTAR Caldb Update (21 Sep 2021)
    The NuSTAR FPM caldb has been updated to version 20210921. This release includes a new clock correction file, v124. Please see the release notes for more details.
  • NuSTAR Caldb Update (08 Sep 2021)
    The NuSTAR FPM caldb has been updated to version 20210908. This release includes a new clock correction file, v123. Please see the release notes for more details.
  • NuSTAR Caldb Update (25 Aug 2021)
    The NuSTAR FPM caldb has been updated to version 20210824. This release includes a new clock correction file, v122. Please see the release notes for more details.
  • NuSTAR Caldb Update (05 Aug 2021)
    The NuSTAR FPM caldb has been updated to version 20210728. This release includes a new clock correction file, v121. Please see the release notes for more details.
  • NuSTARDAS and Analysis Guide updates (28 Jul 2021)
    V2.1.1 of the NuSTAR Data Analysis Software (NuSTARDAS), featuring minor updates, was released with HEASoft V.29 and V1.9.7 of the NuSTAR Data Analysis Software Guide is available on the NuSTAR Analysis page.
  • NuSTAR Caldb Update (02 Jul 2021)
    The NuSTAR FPM caldb has been updated to version 20210701. This release includes a new clock correction file, v120. Please see the release notes for more details.
  • NuSTAR Caldb Update (25 May 2021)
    The NuSTAR FPM caldb has been updated to version 20210524. This release includes a new clock correction file, v119. Please see the release notes for more details.
  • NuSTAR Caldb Update (27 Apr 2021)
    The NuSTAR FPM caldb has been updated to version 20210427. This release includes a new clock correction file, v118. Please see the release notes for more details.
  • NuSTAR Cycle 7 Targets (26 Apr 2021)
    The list of NuSTAR targets recommended by the Cycle 7 peer review is now available. Cycle 7 observations will start to be routinely performed on June 1, 2021. Evaluations will be sent to all NuSTAR Cycle 7 proposal PIs in the coming weeks.
  • NuSTAR Caldb Update (17 Mar 2021)
    The NuSTAR FPM caldb has been updated to version 20210315. This release includes a new clock correction file, v117. Please see the release notes for more details.
  • NuSTAR Caldb Update (23 Feb 2021)
    The NuSTAR FPM caldb has been updated to version 20210210. This release includes a new clock correction file, v116, along with new alignment files and a new beryllium window file. Please see the release notes for more details.
  • NuSTAR Caldb Update (02 Feb 2021)
    The NuSTAR FPM caldb has been updated to version 20210202. This release includes a new clock correction file, v115. Please see the release notes for more details.
  • NuSTAR Cycle 7 Due Date January 29, 2021 (5 Jan 2021)
    Phase-1 science proposals are due by 4:30 p.m. EST, January 29, 2021. Please see the Guide for Proposers and the Guidelines for Anonymous Proposals for more details.
  • NuSTAR Caldb Update (05 Jan 2021)
    The NuSTAR FPM caldb has been updated to version 20210104. This release includes a new clock correction file, v114. Please see the release notes for more details.
  • NuSTAR Caldb Update (17 Dec 2020)
    The NuSTAR FPM caldb has been updated to version 20201217. This release includes a new clock correction file, v113. Please see the release notes for more details.
  • NuSTAR Caldb Update (03 Nov 2020)
    The NuSTAR FPM caldb has been updated to version 20201101. This release includes a new clock correction file, v111. Please see the release notes for more details.
  • NuSTAR Caldb Update (13 Sep 2020)
    The NuSTAR FPM caldb has been updated to version 20200912. This release includes a new clock correction file, v110.
  • NuSTAR Users' Committee Membership (8 Sep 2020)
    The NuSTAR Mission is seeking letters of self-nomination, due Friday, October 2nd, 2020, for people to rotate onto the NuSTAR Users' Committee (NUC).
  • NuSTAR Caldb Update (26 Aug 2020)
    The NuSTAR FPM caldb has been updated to version 20200826. This release includes a new clock correction file, v109.
  • NuSTAR Caldb Update (13 Aug 2020)
    The NuSTAR FPM caldb has been updated to version 20200813. This release includes a new clock correction file, v108 as well as temperature dependent ARFs for FPMA.
  • NuSTAR Caldb Update (11 Aug 2020)
    The NuSTAR FPM caldb has been updated to version 20200811. This release includes a new clock correction file, v107.
  • NuSTAR Caldb Update (27 Jul 2020)
    The NuSTAR FPM caldb has been updated to version 20200726. This release includes a new clock correction file, v106, using a more accurate estimate of the NuSTAR clock drift.
  • NuSTAR Caldb Update (13 Jul 2020)
    The NuSTAR FPM caldb has been updated to version 20200712. This release includes a new clock correction file, v105, using a more accurate estimate of the NuSTAR clock drift.
  • NuSTAR Caldb Update (26 Jun 2020)
    The NuSTAR FPM caldb has been updated to version 20200626. This release includes a new clock correction file, v104, using a more accurate estimate of the NuSTAR clock drift.
  • NuSTAR Caldb Update (12 Jun 2020)
    The NuSTAR FPM caldb has been updated to version 20200612. This release includes a new clock correction file, v103, using a more accurate estimate of the NuSTAR clock drift.
  • NuSTAR Phase 2 proposal deadline moved (5 Jun 2020)
    The deadline for NuSTAR Cycle 6 Phase 2 (budget) proposals has been moved back by one week to June 19, 2020.
  • NuSTAR Caldb Update (26 May 2020)
    The NuSTAR FPM caldb has been updated to version 20200526. This release includes a new clock correction file, v102, using a more accurate estimate of the NuSTAR clock drift.
  • NuSTAR Caldb Update (14 May 2020)
    The NuSTAR FPM caldb has been updated (update version 20200510). This release includes a new clock correction file, v101, using a more accurate estimate of the NuSTAR clock drift.
  • NuSTAR Caldb Update (06 May 2020)
    The NuSTAR FPM caldb has been updated (update version 20200429). This release includes a new clock correction file using a more accurate estimate of the NuSTAR clock drift. The update also includes new ARF files to correct the low energy effective area due to thermal blanket tear in the optics associated with focal plane module FPMA.
  • NuSTAR Cycle 6 Targets (21 Apr 2020)
    The list of NuSTAR targets recommended by the Cycle 6 peer review is now available. Cycle 6 observations will start to be routinely performed on June 1, 2020. Evaluations will be sent to all NuSTAR Cycle 6 proposal PIs in the next few weeks.
  • Important NuSTARDAS update for recent observations (13 Apr 2020)
    V1.9.2 of the NuSTAR Data Analysis Software (NuSTARDAS) was released in the HEASoft v6.27.1 patch release. It is required to analyze any observation performed after 3/16/2020. This is due to an adjustment of the onboard laser metrology system undertaken to improve the longevity of the flight hardware. There is no change to the quality of the science data.
  • NuSTAR Cycle 6 Proposal Deadline is Near, Proposals MUST be Anonymized (17 Jan 2020)
    Phase-1 science proposals are due by 4:30 p.m. EST, January 24, 2020. Please see the Guide for Proposers and the Guidelines for Anonymous Proposals for more details.
  • NuSTAR CALDB Update (19 Dec 2019)
    The NuSTAR CALibration DataBase was updated on December 19, 2019 (CALDB version 20191219). This is a patch release for update 20191213.
  • NuSTAR CALDB Update (16 Dec 2019)
    The NuSTAR CALibration DataBase was updated on December 16, 2019 (CALDB version 20191213). This updates the NuSTAR bad pixel and gain files for FPMA and FPMB.
  • NuSTAR Cycle 6 now Accepting Proposals (25 Oct 2019)
    The NuSTAR General Observer (GO) Program is soliciting proposals for observations during observing Cycle 6. Phase-1 science proposals are due by 4:30 p.m. Eastern Time January 24, 2020. For more information see the NuSTAR Proposal page.
  • NuSTAR CALDB Update (16 Oct 2019)
    The NuSTAR CALibration DataBase was updated on October 16, 2019 (CALDB version 20191008). This updates the NuSTAR clock correction file to version 96, valid through 2019-10-08.
  • NuSTAR CALDB Update (12 Aug 2019)
    The NuSTAR CALibration DataBase was updated on August 8, 2019 (CALDB version 20190827). This updates the NuSTAR clock correction file to version 95, valid through 2019-08-12.
  • NuSTAR CALDB Update (01 Jul 2019)
    The NuSTAR CALibration DataBase was updated on July 1, 2019 (CALDB version 20190627). This updates the NuSTAR clock correction file to version 94, valid through 2019-06-27.
  • NuSTAR Cycle 5 Results (17 Jun 2019)
    The list of NuSTAR targets recommended by the Cycle 5 peer review is now available. Cycle 5 observations will start to be routinely performed on July 1, 2019. Evaluations will be sent to all NuSTAR Cycle 5 proposal PIs in the next few weeks.
  • NuSTAR CALDB Update (15 Mar 2019)
    The NuSTAR CALibration DataBase was updated on March 15, 2019 (CALDB version 20190314). This updates the NuSTAR clock correction file to version 91, valid through 2019-03-14.
  • NuSTAR CALDB Update (05 Mar 2019)
    The NuSTAR CALibration DataBase was updated on March 5, 2019 (CALDB version 20190228). This updates the NuSTAR clock correction file to version 90, valid through 2019-02-28.
  • NuSTAR Cycle 5: Proposal Due Date March 29, 2019, Start of Observations July 1, 2019 (26 Feb 2019)
    The start of Cycle 5 (11 month duration) observations has been changed from June 1 to July 1, 2019 (no change in available total time). Cycle 5 proposers, please take this into account for visibility windows. Cycle 4 observations will extend into June. Please see the Guide for Proposers for more details.
  • NuSTAR Guest Observer (GO) Cycle 5 Deadline is now TBD (17 Jan 2019)
    The due date for NuSTAR Cycle 5 proposal submission is now TBD. See the amendment recently posted at NSPIRES. A new date will be set when the government reopens, with some additional time provided since some proposers have been unable to work. Please note that the proposal submission website (ARK/RPS) will remain open as long as possible to accept proposals.
  • NuSTAR Guest Observer (GO) Cycle 5 (13 Dec 2018)
    The due date for NuSTAR Cycle 5 proposal submission is Jan 25, 2019. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). New in Cycle 5 are the opportunity to propose for large programs and and the opportunity for joint observations with NICER. For more information about this cycle, please visit the NuSTAR Proposal page.
  • NuSTAR CALDB Update (22 Oct 2018)
    The NuSTAR CALibration DataBase was updated on October 22, 2018 (CALDB version 20181022). This updates the NuSTAR clock correction file to version 86, valid through 2018-10-22.
  • NuSTAR and NICER Identification of X-ray Transient IGR J17591-2342 (17 Aug 2018)
    Observations by NICER and NuSTAR of the X-ray transient IGR J17591-2342 discovered by INTEGRAL on August 12 show that the new transient is an accreting millisecond pulsar in outburst. The pulsar has a spin frequency of approximately 527 Hz and an orbital period of 0.37 days.
  • NuSTAR CALDB Update (15 Aug 2018)
    The NuSTAR CALibration DataBase was updated on August 15, 2018 (CALDB version 20180814). This updates the NuSTAR clock correction file to version 84, valid through 2018-08-14.
  • NuSTAR Cycle 4 Results (19 Apr 2018)
    The list of NuSTAR targets accepted by the Cycle 4 peer review is now available. Cycle 4 observations will start to be routinely performed on June 1, 2018. Written evaluations will be sent to all NuSTAR Cycle 4 PIs in the next few weeks.
  • NuSTAR CALDB Update (19 Apr 2018)
    The NuSTAR CALibration DataBase was updated on April 19, 2018 (CALDB version 20180419). This updates the NuSTAR clock correction file to version 80, valid through 2018-04-19.
  • NuSTAR CALDB Update (13 Mar 2018)
    The NuSTAR CALibration DataBase was updated on March 13, 2018 (CALDB version 20180312). This updates the NuSTAR clock correction file to version 79, valid through 2018-03-12.
  • Joint NuSTAR/INTEGRAL Observing Time Available in INTEGRAL's AO-16 (06 Mar 2018)
    The NuSTAR project is making available up to 100 ks of NuSTAR observing time to joint science proposals for INTEGRAL's AO-16. The due date for INTEGRAL AO-16 proposals is Friday, April 13, 2018, at 14:00 CEST.
  • Joint NuSTAR/Chandra Observing Time Available in Chandra's Cycle 20 (06 Mar 2018)
    The NuSTAR project is making available up to 1 Ms of NuSTAR observing time to joint science proposals for Chandra LP or VLP Cycle 20 programs. The due date for Chandra Cycle 20 proposals is Thursday, March 15, 2018 at 6 p.m. EDT.
  • NuSTAR CALDB Update (26 Jan 2018)
    The NuSTAR CALibration DataBase was updated on January 26, 2018 (CALDB version 20180126). This updates the NuSTAR clock correction file to version 78, valid through 2018-01-26.
  • NuSTAR CALDB Update (04 Dec 2017)
    The NuSTAR CALibration DataBase was updated on December 4, 2017 (CALDB version 20171204). This updates the NuSTAR clock correction file to version 76, valid through 2017-12-04.
  • NuSTAR Guest Observer (GO) Cycle 4 Solicitation (20 Nov 2017)
    Research Opportunities in Space and Earth Science for 2017 (ROSES-17) Amendment 38 (released on Oct 6, 2017) contains the revised text for Appendix D.10 soliciting proposals to the NuSTAR GO Cycle 4 opportunity. The due date for proposal submission is Jan 19, 2018. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). For more information about this AO, please visit the NuSTAR Proposal page.
  • NuSTAR Probes Black Hole Jet Mystery (31 Oct 2017)
    Using NASA's NuSTAR space telescope and a fast camera called ULTRACAM on the William Herschel Observatory in La Palma, Spain, Gandhi et al. have been able to measure the distance that particles in the jets from the black hole binaries V404 Cyg and GX 339-4 travel before they "turn on" and become bright in visible light. This distance called the "acceleration zone" is determined to be 0.1 light seconds (30,000 km) in these systems. See the published study in Nature Astronomy.
  • NuSTAR Users Commitee: Call for Self Nominations (18 Oct 2017)
    NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) high-energy mission announces the creation of the NuSTAR Users Committee (NUC). The NUC will provide community advice and feedback to the project, to ensure that the interests of the guest investigator community are well-served by the project. Membership on this committee is open to the world, and we intend a committee that is diverse in terms of career stage, gender, and scientific focus. Letters of self-nomination to serve on this committee are due by November 3rd, 2017.
  • NuSTAR CALDB Update (03 Oct 2017)
    The NuSTAR CALibration DataBase was updated on October 3, 2017 (CALDB version 20171002). This updates the NuSTAR clock correction file to version 75, valid through 2017-10-02.
  • NuSTAR Data Analysis Guide Updated (03 Oct 2017)
    The NuSTAR Data Analysis Guide was updated to version 1.9.3
  • NuSTAR CALDB Update (30 Aug 2017)
    The NuSTAR CALibration DataBase was updated on August 30, 2017 (CALDB version 20170817). This updates the NuSTAR clock correction file to version 74, valid through 2017-08-17.
  • News Story: NuSTAR Observed This Week's Solar Eclipse (24 Aug 2017)
    On August 21, for about two minutes across a swath of North America, Earth's moon passed in front of and completely blocked out the sun, causing a total solar eclipse. Countless people witnessed this rare phenomenon, the first total solar eclipse in North America in 38 years. Just last week, scientists at Caltech and JPL decided that NuSTAR, the Nuclear Spectroscopic Telescope Array, would watch with them.
  • NuSTAR CALDB Update (21 Aug 2017)
    The NuSTAR FPM CALDB at the HEASARC was updated to CALDB version 20170727. This CALDB patch is a required update for using saamode=3 now available with NuSTARDAS v1.8.0., released in HEASoft 6.22.
  • NuSTAR CALDB Update (21 Jul 2017)
    The NuSTAR CALibration DataBase was updated on July 21, 2017 (CALDB version 20170720). This updates the NuSTAR clock correction file to version 73, valid through 2017-07-20.
  • NuSTAR CALDB Update (14 Jun 2017)
    The NuSTAR CALibration DataBase was updated on June 14, 2017 (CALDB version 20170614) This updates the NuSTAR clock correction file to version 72, valid through 2017-06-14.
  • Happy 5th Birthday to NuSTAR! (13 Jun 2017)
    The Nuclear Spectroscopic Telescope Array (NuSTAR) spacecraft was launched on a Pegasus XL rocket dropped from a Lockheed L-1011 "TriStar" aircraft flying over the Pacific Ocean near the Kwajalein Atoll on June 13, 2012. Since then it has made over 2100 hard X-ray observations in science mode which have yielded (to date) hundreds of refereed and other publications.
  • NuSTAR Cycle 3 Results (10 May 2017)
    The list of NuSTAR targets accepted by the Cycle 3 peer review is now available. Cycle 3 observations will start to be routinely performed on June 1, 2017. Written evaluations will be sent to all NuSTAR Cycle 3 PIs in the next few weeks.
  • NuSTAR CALDB Update (05 May 2017)
    The NuSTAR CALibration DataBase was updated on May 5, 2017 (CALDB version 20170503). This updates the NuSTAR clock correction file to version 71, valid through 2017-05-03.
  • NuSTAR CALDB Update (24 Apr 2017)
    The NuSTAR CALibration DataBase was updated on April 24, 2017 (CALDB version 20170419). This updates the NuSTAR clock correction file to version 70, valid through 2017-04-19.
  • NuSTAR Probes Puzzling Galaxy Merger (28 Mar 2017)
    A supermassive black hole (SMBH) inside a tiny galaxy is challenging scientists' ideas about what happens when two galaxies merge. Was 49 is the name of a system consisting of a large disk galaxy, referred to as Was 49a, merging with a much smaller "dwarf" galaxy called Was 49b. The dwarf galaxy rotates within the larger galaxy's disk, about 26,000 light years from its center. Using NuSTAR, Secrest et al. (2017, ApJ, 836, 183), have discovered that the dwarf galaxy is so luminous in high-energy X-ray, it must host an SMBH much larger and more powerful than expected for such a lightweight.
  • Andromeda's Bright Hard X-Ray Mystery Source Identified by NuSTAR (24 Mar 2017)
    The Milky Way's close neighbor galaxy Andromeda (M 31), features a dominant source of high-energy X-ray emission, but its identity has been mysterious until now. As reported in a new study by Yukita et al. (2017, ApJ, in press), NASA's NuSTAR (Nuclear Spectroscopic Telescope Array) mission has pinpointed the object responsible for this high-energy radiation to be Swift J0042.6+4112, a possible pulsar, the dense remnant of a dead star that is highly magnetized and spinning.
  • NuSTAR Helps Find Universe's Brightest Pulsar (01 Mar 2017)
    The brightest pulsar ever found (NGC 5907 ULX, detected by both XMM-Newton and NuSTAR), has just been reported in the journal Science by Israel et al. (2017). In one second, NGC 5907 ULX emits the same amount of energy (1041 erg) as our sun does in three-and-a-half years. The authors note that standard accretion models fail to explain this high luminosity, but models with strong multipolar magnetic fields can.
  • NuSTAR CALDB Update (24 Feb 2017)
    The NuSTAR CALibration DataBase was updated on February 24, 2017 (CALDB version 20170222). This updates the NuSTAR clock correction file to version 69, valid through 2017-02-22.
  • NuSTAR, Swift and XMM-Newton Help Solve the "Rapid Burster" Mystery (02 Feb 2017)
    Simultaneous Swift, NuSTAR and XMM-Newton observations of MXB 1730-335, a curious neutron star in a binary system known as the 'Rapid Burster', may have solved a 40-year-old mystery surrounding its puzzling X-ray bursts, according to van den Eijnden et al.(2016, MNRAS, 466, L98)). The neutron star magnetic field creates a gap in the accretion disk around the star, largely preventing it from feeding on matter from its companion. Gas builds up there until, under certain conditions, it hits the neutron star all at once, producing intense flashes of X-rays.
  • NuSTAR Guest Observer Cycle 3 Deadline Is Near (05 Jan 2017)
    The deadline for Phase-1 scientific/technical proposals for the NuSTAR Cycle 3 GO Program is imminent: proposals are due no later than 4:30 pm EST on Friday, January 27th, 2017.
  • NuSTAR CALDB Update (08 Dec 2016)
    The NuSTAR CALibration DataBase was updated on December 8, 2016 (CALDB version 20161207). This updates the NuSTAR clock correction file to version 66, valid through 2016-12-07. This version is the long-awaited "corrected" clock correction file that tracks clock drift by fitting to screened clock data.
  • NuSTAR CALDB Update (25 Oct 2016)
    The NuSTAR CALibration DataBase was updated on October 25, 2016 (CALDB version 20161021). This updates the NuSTAR clock correction file to version 63, valid through 2016-10-21.
  • NuSTAR CALDB Update (23 Sep 2016)
    The NuSTAR CALibration DataBase was updated on September 23, 2016 (CALDB version 20160922). This updates the NuSTAR clock correction file to version 62, valid through 2016-09-22.
  • NuSTAR CALDB Update (30 Aug 2016)
    The NuSTAR CALibration DataBase was updated on August 30, 2016 (CALDB version 20160824). This updates the NuSTAR clock correction file to version 61, valid through 2016-08-24.
  • NuSTAR Feature: A Chorus of Black Holes Sings in X-rays (03 Aug 2016)
    Supermassive black holes (SMBH) in the universe are like a raucous choir "singing" in X-rays. When black holes pull in surrounding matter, they let out powerful X-ray bursts. These "songs" of X-rays, coming from a chorus of millions of black holes, fill the entire sky - a phenomenon astronomers call the cosmic X-ray background. NuSTAR has made significant progress in resolving the high-energy X-ray background, finding that at least 35% is attributable to SMBH, according to a new paper by Harrison et al. (2016, ApJ, in press).
  • NuSTAR CALDB Update (02 Aug 2016)
    The NuSTAR CALibration DataBase was updated on August 2, 2016 (CALDB version 20160731). This updates the NuSTAR clock correction file to version 60, valid through 2016-07-31.
  • The South Atlantic Anomaly (SAA) and NuSTAR Data (28 Jul 2016)
    The NuSTAR spacecraft flies through regions of the Earth's radiation belts, e.g., the SAA, in parts of its orbit, resulting in an enhanced background in its detectors. The NuSTAR team has some advice about how to analyze data affected by such high backgrounds (which is particularly applicable for fainter X-ray sources) here.
  • Correction to NuSTAR CALDB Update 20160706 (28 Jul 2016)
    There was an error in the NuSTAR CALDB update version 20160706 in which the caldb.indx file was pointing to an older CALDB version (20151008). This has now been fixed, and the tar files have been updated. If you have previously downloaded NuSTAR CALDB 20160706, you should re-download and re-install this version, or use Remote Access to access version 20160706 of the NuSTAR CALDB.
  • NuSTAR CALDB Update (22 Jul 2016)
    The NuSTAR CALibration DataBase was updated on July 22, 2016 (CALDB version 20160706). This updates the NuSTAR clock correction file to version 59, valid through 2016-07-06.
  • NuSTAR CALDB Update (21 Jul 2016)
    The NuSTAR CALibration DataBase was updated on July 21, 2016 (CALDB version 20160606, corresponding to the internal NuSTAR project release 20160606).
  • Happy 4th Birthday to NuSTAR (14 Jun 2016)
    The Nuclear Spectroscopic Telescope Array (NuSTAR) spacecraft was launched on a Pegasus XL rocket dropped from a Lockheed L-1011 "TriStar" aircraft flying over the Pacific Ocean near the Kwajalein Atoll on June 13, 2012. Since then it has made over 1660 hard X-ray observations in science mode which have yielded (to date) hundreds of refereed and other publications.
  • NuSTARDAS v1.6.0 Released (11 May 2016)
    Released on May 11th, 2016, NuSTARDAS v1.6.0 was included in the HEASoft 6.19 release on the same date. NuSTARDAS v1.6.0 users should make sure to use version 20160502 (or later) of the NuSTAR CALDB. An updated version of the NuSTARDAS users guide (v1.9.0) is also available.
  • NuSTAR Cycle 2 Results (04 Mar 2016)
    The list of NuSTAR targets accepted by the Cycle 2 peer review is now available. Cycle 2 observations will start to be routinely performed on May 1, 2016. Written evaluations will be sent to all NuSTAR Cycle 2 PIs in the next few weeks. As specified in the AO, U.S. PIs of proposals with category A or B targets will be invited to submit phase-2 funding proposals. Note that 0.5 Ms of NuSTAR observing time is also available through the Chandra Cycle 18 CfP, due March 15, 2016.
  • Joint NuSTAR/INTEGRAL Observing Time is Available in INTEGRAL AO-14 (29 Feb 2016)
    In the just-released INTEGRAL Fourteenth Announcement of Opportunity, ESA is providing the opportunity to propose for coordinated observations with NuSTAR for a total of 100 ks of available time. The deadline for INTEGRAL AO-14 proposals is April 8th, 2016.
  • NASA News: Andromeda Galaxy Scanned with High-Energy X-ray Vision by NuSTAR (05 Jan 2016)
    NuSTAR has captured the best high-energy X-ray view yet of a portion of our nearest large, neighboring galaxy, Andromeda (M 31). The space mission has observed 40 "X-ray binaries" -- intense sources of X-rays comprised of a black hole or neutron star feeding off a stellar companion. Daniel Wik of NASA Goddard Space Flight Center presented these results at the 227th meeting of American Astronomical Society in Kissimmee, Florida
  • NuSTAR Guest Observer Cycle 2 Deadline Is Near (03 Dec 2015)
    The deadline for NuSTAR Cycle 2 GO proposals is imminent: proposals are due no later than 4:30 pm EST on December 11th.
  • Swift and NuSTAR Observe a Major Flare of the Supermassive Black Hole in Markarian 335 (10 Nov 2015)
    The baffling and strange behaviors of black holes have become somewhat less mysterious recently, thanks to observations by NASA's Swift and NuSTAR observatories which caught the supermassive black hole (SMBH) in Mrk 335 in the midst of a giant eruption of X-ray light. These observations (discussed in Wilkins et al. 2015, MNRAS, 454, 4440) help address an ongoing puzzle: How do SMBHs flare?
  • 7th NuSTAR Baseline Mission Public Data Release (17 Sep 2015)
    334 new NuSTAR data sets (total exposure time of ~10 Msec) from observations made as part of the baseline mission phase from 2012 August 1st to 2015 April 30th were released to the public NuSTAR archive on September 17th. These NuSTAR data are accessible via the usual HEASARC archive interfaces, i.e., Xamin and Browse, by querying the NuSTAR master catalog, 'numaster'. NuSTAR data can also be accessed from the HEASARC FTP site.
  • NuSTAR Guest Observer (GO) Cycle 2 Solicitation Released (15 Sep 2015)
    Research Opportunities in Space and Earth Science for 2015 (ROSES-15) Amendment 26 (released on Sep 10, 2015) contains the revised text and new due date for Appendix D.10 soliciting proposals to the NuSTAR GO Cycle 2 opportunity. The new due date for proposal submission is Dec 11, 2015. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). For more information about this AO, please visit the NuSTAR Proposal page
  • Searing Sun As Seen in the Hard and Soft X-ray and UV Bands (08 Jul 2015)
    The surface of the Sun is lit up in a bouquet of colors in a new composite image containing data from NuSTAR, the Hinode X-Ray Telescope (XRT) and the Solar Dynamics Observatory (SDO). The high-energy X-rays seen by NuSTAR are shown in blue in this image, green represents lower-energy X-rays seen by the Hinode XRT, and yellow and red the UV light viewed by the SDO instruments. Iain Hannah of the University of Glasgow presented this image on July 8, at the UK RAS's National Astronomy Meeting in Wales.
  • NuSTAR Stares Deep into Hidden Lairs of Black Holes (06 Jul 2015)
    Lansbury et al. (2015, ApJ, in press) have used NuSTAR and its hard X-ray capability to observe nine galaxies where supermassive black holes (SMBHs) were thought to be extremely active but largely obscured, at least in the soft X-ray band. Five of these candidates were found to contain hidden SMBHs, feasting on surrounding material. This study supports the theory that potentially millions of SMBHs exist in the universe hidden from view at most wavelengths.
  • Star Explosion is Lopsided, Finds NASA's NuSTAR (08 May 2015)
    The Nuclear Spectroscopic Telescope Array spacecraft has found evidence that the massive star which created supernova SN 1987A exploded in a lopsided fashion, sending ejected material flying in one direction and the core of the star in the other: the 44 Ti gamma-ray emission lines produced in the innermost ejecta are narrow and redshifted by 700 km/s, according to Boggs et al. (2015, Science, 348, 670).
  • NuSTAR Captures Possible 'Screams' from Zombie Stars (29 Apr 2015)
    Peering into the heart of the Milky Way galaxy, NuSTAR has spotted a mysterious glow of hard X-rays that, according to Perez et al. (2015, Nature, 520, 646), could be the "howls" of dead stars as they feed on stellar companions. This hard X-ray emission, sharply peaked on the Galactic Center, "could indicate a significantly more massive population of accreting white dwarfs, large populations of LMXBs or MSPs, or particle outflows interacting with the surrounding radiation field, dense molecular material or magnetic fields."
  • 6th NuSTAR Public Data Release (01 Apr 2015)
    679 new NuSTAR data sets from the first 24 months of observations were released to the public NuSTAR archive on March 31st. NuSTAR data are accessible via the usual HEASARC archive interfaces, i.e., Xamin and Browse, by querying the NuSTAR master table (numaster). NuSTAR data can also be accessed from the HEASARC FTP site.
  • NuSTAR Cycle 1 Results (03 Mar 2015)
    The list of NuSTAR targets accepted by the Cycle 1 peer review is now available, Cycle 1 observations will start to be routinely performed on April 1, 2015. Written evaluations will be sent to all NuSTAR Cycle 1 PIs in the next few weeks. As specified in the AO, U.S. PIs of proposals with category A or B targets will be invited to submit phase-2 funding proposals. Note that 0.5 Ms of NuSTAR observing time is also available through the Chandra Cycle 17 CfP, due March 17.
  • NASA, ESA Telescopes Give Shape to Furious Black Hole Winds (19 Feb 2015)
    Five simultaneous observations by Nuclear Spectroscopic Telescope Array (NuSTAR) and the XMM-Newton observatory are showing that fierce winds from a supermassive black hole in PDS 456 blow outward in all directions -- a phenomenon that had been suspected, but difficult to prove until now. See Nardini et al. (2015, Science, 346, 860) for the full details.
  • Will the Real Monster Black Hole Please Stand Up? (09 Jan 2015)
    As described in Ptak et al. (2015, ApJ, in press), a new high-energy X-ray image from NuSTAR has pinpointed the 'true' monster in two colliding galaxies, collectively called Arp 299, that are located 44 Mpc away. Each of the galaxies has a supermassive black hole at its heart. NuSTAR has revealed that the black hole located in Arp 299-B, the western of the galaxy pair, is actively gorging on gas, while its partner Arp 299-A is either dormant or hidden under gas or dust.
  • NuSTAR Observes Sun Sizzling in High-Energy X-Rays (22 Dec 2014)
    For the first time, NuSTAR, a mission designed to observe black holes and other objects far from our solar system has turned its gaze back closer to home, capturing images of the Sun, and producing the most sensitive solar portrait ever taken in hard X-rays. Future NuSTAR images should provide even better data as the sun winds down its solar cycle and might capture the hypothesized nanoflares that may energize the solar corona.
  • NuSTAR Guest Observer AO1 Deadline Is Near (14 Nov 2014)
    The deadline for NuSTAR proposal submission is 4:30 pm EST on November 25th .
  • 5th NuSTAR Public Data Release (23 Oct 2014)
    214 new NuSTAR data sets from the first 24 months of observations were released to the public NuSTAR archive on September 23rd. NuSTAR data are accessible via the usual HEASARC archive interfaces, i.e., Xamin and Browse, by querying the NuSTAR master table (numaster). NuSTAR data can also be accessed from the HEASARC FTP site.
  • NASA's NuSTAR Telescope Discovers Shockingly Bright Dead Star (08 Oct 2014)
    Bachetti et al. (2014, Nature, 514, 202) used NuSTAR (together with Chandra and Swift) to find a pulsating "dead" star beaming with the energy of about 10 million suns. This is the brightest pulsar ever recorded. The surprising find is helping astronomers better understand the mysterious sources of blinding X-rays, called ultraluminous X-ray sources (ULXs), which, until now, were all thought to be black holes.
  • The Pulse of a Dead Star Powers Intense Gamma Rays (16 Sep 2014)
    When the most massive stars explode as supernovae, they don't fade into the night, but sometimes glow ferociously with high-energy gamma rays. What powers these energetic stellar remains? NuSTAR is helping to untangle the mystery.
  • NuSTAR Guest Observer Cycle 1 Solicitation Released (26 Aug 2014)
    ROSES-14 Amendment 32 contains a new call under Appendix D.11 soliciting proposals to the NuSTAR Guest Observer - Cycle 1 announcement of opportunity which was released on August 26, 2014. The due date for proposals is November 25, 2014.
  • NuSTAR Sees Rare "Blurring" of Black Hole Light (12 Aug 2014)
    NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) has captured an extreme and rare event in the regions immediately surrounding the supermassive black hole in Markarian 335. A compact source of X-rays that sits near the black hole, called the corona, has moved closer to the black hole over a period of just days so that the black hole's intense gravity has blurred and stretched its X-ray emission.
  • NuSTAR is Highly Ranked by the 2014 Senior Review (22 May 2014)
    The Astrophysics Division's Senior Review in March and April this year ranked NuSTAR second among the nine operating missions that were considered by its panel. NuSTAR has been approved to continue operations through 2018 (subject to the 2016 Senior Review) and will have a Guest Observer Program, with GO observations starting in 2015.
  • 4th NuSTAR Public Data Release (07 May 2014)
    163 new NuSTAR data sets from the first 18 months of observations were released to the public NuSTAR archive on May 7th. NuSTAR data are accessible via the usual HEASARC archive interfaces, i.e., Xamin and Browse, by querying the NuSTAR master table (numaster). NuSTAR data can also be accessed from the HEASARC FTP site.
  • NASA's NuSTAR Untangles Mystery of How Stars Explode (19 Feb 2014)
    NuSTAR observations of the supernova remnant Cas A is helping to unravel one of the biggest mysteries in astronomy, how massive stars explode.
  • 3rd NuSTAR Public Data Release (05 Feb 2014)
    104 New NuSTAR data sets from the first year of observations were released to the public NuSTAR archive on February 5th. NuSTAR data are accessible via the usual HEASARC archive interfaces, i.e., Xamin and Browse, by querying the NuSTAR master table (numaster). NuSTAR data can also be accessed from the HEASARC FTP site.
  • NuSTARDAS v1.3.1 Released (31 Jan 2014)
    Released January 28, 2014, NuSTARDAS v1.3.1 was included in the HEASoft 6.15.1 release. NuSTARDAS v1.3.1 users should make sure to use version 20131223 of the NuSTAR caldb. An updated version of the NuSTARDAS Users Guide (v.1.5) is also available here.
  • Dead Star and Distant Black Holes Dazzle in X-Rays (09 Jan 2014)
    Two new views from NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, showcase the telescope's talent for spying objects near and far. One image shows the energized remains of a dead star, a structure nicknamed the "Hand of God" after its resemblance to a hand. Another image shows distant black holes buried in blankets of dust.
  • Do Black Holes Come in Size Medium? (02 Dec 2013)
    In the stockroom of our cosmos, black holes come in size small and large. NASA's NuSTAR is helping to find our more about why medium-sized black holes are missing.
  • New NuSTAR Public Data Release (26 Nov 2013)
    New NuSTAR data were released to the public NuSTAR archive on November 25. NuSTAR data are accessible via the usual HEASARC archive interfaces, i.e., Xamin and Browse, specifically by querying the NuSTAR master table (numaster). NuSTAR data can also be accessed from the HEASARC FTP site. NuSTAR calibration data are available from the HEASARC CALDB.
  • NuSTARDAS v1.3.0 Released (25 Nov 2013)
    Released November 25, 2013; NuSTARDAS v1.3.0 was included in the HEASOFT 6.15 release. Note that nustardas v 1.3.0 requires version 20131007 of the NuSTAR CALDB.
  • NuSTAR CALDB Update: Version 20131007 (25 Nov 2013)
    The NuSTAR CALibration DataBase was updated on November 25, 2013 (CALDB version 20131007). Because of the large size of some calibration files, for NuSTAR data processing and analysis we recommend downloading the NuSTAR CALDB and installing it locally, rather than accessing the NuSTAR CALDB at the HEASARC remotely.
  • NuSTAR Catches Black Holes on the Fly (06 Sep 2013)
    NASA's black-hole-hunter spacecraft, the Nuclear Spectroscopic Telescope Array, or NuSTAR, has "bagged" its first 10 supermassive black holes, the first of hundreds expected from the mission over the next two years. NuSTAR, which has a mast the length of a school bus, is the first telescope capable of focusing the highest-energy X-ray light into detailed pictures.
  • Proposal Tools Available for Joint NuSTAR-XMM Newton Observing Opportunity (05 Sep 2013)
    Proposal tools (Target Visibility, straylight, and deadtime calculators, along with simulation and software guides) have been made available by the NuSTAR project.
  • The NuSTAR Archive Opens (29 Aug 2013)
    The NuSTAR Public Data Archive has officially opened. NuSTAR data are accessible via the usual HEASARC archive interfaces, i.e., Xamin and Browse, specifically by querying the NuSTAR master table (numaster). NuSTAR data can also be accessed from the HEASARC FTP site. NuSTAR calibration data are available from the HEASARC CALDB.
  • Joint NuSTAR-XMM Newton Observing Opportunity (28 Aug 2013)
    XMM-Newton AO13 offers the opportunity to propose for joint observations with NuSTAR
  • The Turbulent, High-Energy Sky Is Keeping NuSTAR Busy (18 Jun 2013)
    NuSTAR keeps an eye on sudden changes in the high-energy sky
  • Black Hole Naps Amidst Stellar Chaos (17 Jun 2013)
    NuSTAR teamed up with Chandra to show that the supermassive black hole in the Sculptor galaxy is no longer actively feeding.
  • NuSTAR helps solve the Spinning Black Hole riddle (27 Feb 2013)
    NuSTAR teamed up with XMM-Newton to definitively measure, for the first time ever, the spin of a supermassive black hole.
  • NuSTAR images two high-energy Black Holes (09 Jan 2013)
    NuSTAR detected high energy X-ray emission from two black holes in the outer reaches of the galaxy IC 342, and also obtained a new image of the Cas A supernova remnant.
  • NuSTAR Spots a Flare from Sgr A* (24 Oct 2012)
    NuSTAR saw a rare X-ray outburst, or flare, from Sgr A*, the Milky Way's notoriously quiet central supermassive black hole.
  • NuSTAR: The First 100 Days (27 Sep 2012)
    Sept. 21, 2012 marked 100 days since NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, launched into space from the L-1011 "Stargazer" aircraft. Since completing its 30-day checkout, the telescope has been busy making its first observations of black holes, super-dense dead stars and the glowing remains of exploded stars.
  • NuSTAR Passes Post-Launch Assessment Review (30 Jul 2012)
    NASA's new X-ray mission, the Nuclear Spectroscopic Telescope Array, has passed its PLAR, clearing the way for the mission to enter its science operations phase (Phase "E") in August 2012.....
  • NuSTAR Observes 3C 273 (July 16, 2012) (17 Jul 2012)
    3C 273 simultaneously observed by NuSTAR, XMM, Swift, Suzaku, and INTEGRAL....
  • NuSTAR Is Launched (13 Jun 2012)
    NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) launched into the morning skies over the central Pacific Ocean at 9 a.m. PDT (noon EDT) Wednesday, June 13, 2012, beginning its mission to unveil secrets of buried black holes and other exotic objects....