The High Energy Astrophysics Science Archive Research Center (HEASARC) is the primary archive for NASA's (and other space agencies') missions studying electromagnetic radiation from extremely energetic cosmic phenomena ranging from black holes to the Big Bang. Since its merger with the Legacy Archive for Microwave Background Data Analysis (LAMBDA) in 2008, the HEASARC archive contains data obtained by high-energy astronomy missions observing in the extreme-ultraviolet (EUV), X-ray, and gamma-ray bands, as well as data from space missions, balloons, and ground-based facilities that have studied the relic cosmic microwave background (CMB) radiation in the sub-mm, mm and cm bands.

The HEASARC is a member of the NASA Astronomical Virtual Observatories (NAVO) where we work with other NASA archives to ensure comprehensive and consistent VO access to NASA mission datasets. Users may now query the HEASARC's catalogs using VO-enabled services and specialized tools. This page describes how to get to the HEASARC VO-enabled services and provides information on other HEASARC VO activities.

Latest News
  • Swift XRT CALDB updated (12 Aug 2022)
    The Swift XRT caldb has been updated to version 20220803 ...
  • EFEDSMAIN - eROSITA Main X-ray (0.2 -2.3 keV) Source Catalog Released (5 Aug 2022)
    SRG/eROSITA performed scanning observations of the ~140 square degrees eROSITA Final Equatorial Depth Survey (eFEDS) field as part of its performance verification phase. The eROSITA main X-ray source catalog (EFEDSMAIN) presents the primary catalog of 27,910 X-ray sources, including 542 with significant spatial extent, detected in the 0.2-2.3 keV energy range. The associated eROSITA Hard X-ray source catalog (EFEDSHARD) table presents the hard band sample of 246 sources detected in the energy range 2.3-5.0 keV. Both are now available in both Browse and Xamin.
  • ETACHAMAIN - Eta Chamaeleontis eROSITA EDR Field X-Ray (0.2-2.3 keV) Source Catalog Released (5 Aug 2022)
    The nearby young open cluster eta Chamaeleontis was observed by eROSITA/SRG during its performance verification phase for 150 ks. This table contains the "main" (0.2-2.3 keV) catalog of the X-ray sources in the eta Chamaeleontis field (ETACHAMAIN), which is released along with the associated "hard" (2.3-5.0 keV) catalog (ETACHAHARD). Both are now available in both Browse and Xamin.
  • 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.
  • 2022 NICER Proposal and Science Workshop, Aug 31-Sep 1 (28 Jul 2022)
    In anticipation of the Cycle 5 proposal deadline (Sep 14, 2022). the NICER project will hold a Proposal and Science workshop highlighting the technical and scientific capabilities and strength of the NICER mission. The workshop will be held virtually on August 31st and September 1st, 09:00-11:00 and 14:00-16:00 EDT. Registration is free.
  • XMMSTACK- XMM-Newton Serendipitous Source Catalog from Stacked Observations (4XMM-DR12s) Released (28 Jul 2022)
    The stacked catalog (XMMSTACK) and associated observation data ( XMMSTACKOB) offer new versions of the stacked catalog built from 9,355 4XMM-DR12 overlapping observations. XMMSTACK contains 1,620 stacks (or groups). The catalog contains 386,043 sources, with each observation also provided in the associated XMMSTACKOB table. Both are now available in both Browse and Xamin.

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Last modified: Wednesday, 08-Sep-2021 18:38:35 EDT