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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
  • Chandra Cycle 26 Accepted Proposals and Targets Lists Are Now Available (6 Sep 2024)
    The Chandra Peer-Review recommended targets and proposals for Chandra Cycle 26, including GTO and GO proposals, joint proposals with other ground-based and/or satellite facilities, large and very large multicycle proposals, have now been publically released. Note: archive and theory proposals are no longer supported.
  • Updates to IXPE tools (04 Sep 2024)
    HEASoft 6.34 has been released and contains updates to the IXPE software tools. This release also includes a new tool for flagging background events. Please see the release notes for more details. Downloads are available from the HEASoft page. IXPE users are recommended to use the latest version of HEASoft for their analysis.
  • 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.
  • Chandra CALDB 4.11.3 installed at the HEASARC (26 Aug 2024)
    The Chandra CalDB 4.11.3 is now installed in and available from the HEASARC CALDB. Chandra 4.11.3 was released by the CXC on August 21, 2024.
  • First release of the XRISM Caldb (23 Aug 2024)
    The first release of the XRISM Caldb for the Resolve, XTEND and gen instruments is now available. Tar files can be downloaded from the XRISM Calibration page.
  • HEASoft 6.34 released (23 Aug 2024)
    HEASoft 6.34 has been released. HEASoft 6.34 contains the first release of the XRISM analysis software. Please see the 6.34 release notes for details.

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