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
  • 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.
  • HEASoft 6.33.1 released (21 Mar 2024)
    HEASoft 6.33.1 has been released. HEASoft 6.33.1 contains updates required for building the source code on Macs using the Apple XCode Command Line Tools (CLT) version 15.3. Please see the 6.33.1 release notes for details.
  • XSPEC 12.14.0c Patch Released (21 Mar 2024)
    12.14.0c addresses a seg fault when using the plot polangle command.
  • 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.
  • Swift SC and BAT CALDB updated (12 Mar 2024)
    The Swift SC caldb has been updated to version 20240308, and the Swift BAT caldb has been updated to version 20230607 ...
  • IXPE Quick Start Guide Updated (12 Mar 2024)
    The IXPE Quick Start guide has been updated to include the use of the ixpecalcarf tool to generate observation specific response files.

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