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
  • XMMSLEWFUL- XMM-Newton Slew Survey Full Source Catalog, v3.0 (XMMSL3) and XMMSLEWCLN- XMM-Newton Slew Survey Clean Source Catalog, v3.0 Released (19 Feb 2025)
    The XMM slew catalog ( XMMSLEWFUL) and associated catalog of clean sources ( XMMSLEWCLN) offer the third catalog of X-ray sources found in slew data from 3,120 observations made between 2000 August 26 and 2023 August 11. The full catalog contains 68,383 more detections (for a total of 140,735 detections); the "clean" sample of sources contains 46,110 sources. Both are now available in both Browse and Xamin.
  • NuSTAR Caldb Update (18 Feb 2025)
    The NuSTAR FPM caldb was updated to version 20250218. This release includes a new clock correction file, v199. Please see the release notes for more details.
  • NuSTAR Caldb Update (04 Feb 2025)
    The NuSTAR FPM caldb was updated to version 20250203. This release includes a new clock correction file, v198. Please see the release notes for more details.
  • Chandra CALDB 4.12.0 installed at the HEASARC (31 Jan 2025)
    The Chandra CalDB 4.12.0 is now installed in and available from the HEASARC CALDB. Chandra 4.12.0 was released by the CXC on January 31, 2025.
  • XMM-Newton SAS v22.0 Released (31 Jan 2025)
    The latest release of the XMM-Newton Science Analysis Software is now available.
  • NICER Patching Assessment after Spacewalk 91 (24 Jan 2025)
    Verification observations of the installation of 9 patches during U.S. Spacewalk 91 show that the detectors behind the patched optics are receiving lower levels of optical light during orbit night, and the level of light inside the instrument during orbit day is substantially reduced. Some continued data degradation due to sunlight during orbit day is, however, still evident. NICER continues to operate with its full measurement capabilities during orbit night, and assessment of daytime data recovery is ongoing.

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