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
  • NGC 5866 Chandra X-Ray Point Source Catalog (23 May 2018)
    This catalog listing the properties of 71 X-ray point sources detected in a Chandra ACIS-S observation of the nearby edge-on S0 galaxy NGC 5866 (from Li et al. 2009, ApJ, 706, 696) is now available in Browse and Xamin.
  • NICER XTI CALDB Updated to Version 20180517 (23 May 2018)
    The NICER XTI caldb has been updated to version 20180517. Please make sure you're using the most recent version of the caldb.config file in order to access the NICER XTI CALDB data.
  • CFITSIO Version 3.45 released (22 May 2018)
    Version 3.45 of CFITSIO was released May, 2018. Provides new support for reading and writing unsigned long long datatypes; increased the hardcoded NMAXFILES setting for maximum number of open files from 1000 to 10000, other improvements
  • Swift CALDB Data Updated (20 May 2018)
    The Swift SC clock correction has been updated (CALDB update version 20180411).
  • XMM-Newton Serendipitous Source Catalog (Version 3XMM-DR8) (17 May 2018)
    The most reccent, updated version of this catalog (from Rosen, Webb, Watson et al. 2016, A&A, 590, A1) containing 775,153 X-ray source detections (an increase of 47,363 compared to DR7) drawn from a total of 10,242 XMM-Newton EPIC observations made between 2000 Feb 3 and 2017 November 30 is now available in Browse and Xamin.
  • Timeline tool updated (15 May 2018)
    Support for NICER has been added to the Timeline tool.

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Last modified: Thursday, 24-May-2018 00:30:04 EDT