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 (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.
  • Swift CALDB updated (07 Sep 2021)
    The Swift SC caldb has been updated (update version 20210907) to updated the clock correction file to v144 ...
  • 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.
  • XMMSTACK- XMM-Newton Serendipitous Source Catalog from Stacked Observations (4XMM-DR11s) Released (18 Aug 2021)
    The stacked catalog (XMMSTACK) and associated observation data ( XMMSTACKOB) offer new versions of the stacked catalog built from 8,292 4XMM-DR11 overlapping observations. XMMSTACK contains 1,475 stacks (or groups). The catalog contains 358,809 sources, with each observation also provided in the associated XMMSTACKOB table. Both are now available in Browse and Xamin.
  • XMM-Newton Serendipitous Source Catalog (4XMM-DR11) Released (18 Aug 2021)
    The most recent, updated version of this catalog (from Webb et al.,2020) containing 895,415 X-ray source detections (an increase of 563 more observations and 45,424 more detections since the previous version 4XMM-DR10) drawn from a total of 12,210 XMM-Newton EPIC observations made between 2000 Feb 3 and 2020 December 17 is now available in Browse and Xamin.
  • XMM-Newton AO-21 Solicitation Released (17 Aug 2021)
    XMM-Newton observing proposals are solicited in response to the Twenty-first Announcement of Opportunity.

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