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
  • ROSES-17 Amendment 62: Government Shutdown Due Date Delays (23 Jan 2018)
    For ROSES program elements that were due this week, this amendment delays the (mandatory) NOI and proposal due dates by one day so as to account for time lost due to the government shut down. Thus, the (mandatory) NOI date for D.3 Astrophysics Research and Analysis and D.8 Strategic Astrophysics Technology and the proposal due date for D.12 Theoretical and Computational Astrophysics Networks are now due Friday, January 26, 2018.
  • CALDB Mirror (22 Jan 2018)
    The CALDB is mirrored at ftp://cda.cfa.harvard.edu/pub/arcftp/heasarc/caldb. You can access the CALDB remotely by setting your CALDB environment variable to ftp://cda.cfa.harvard.edu/pub/arcftp/heasarc/caldb.
  • Newly Renamed Swift Mission Spies a Comet Slowdown (13 Jan 2018)
    The Gehrels Swift Observatory has captured an unprecedented change in the rotation of a comet. Images taken in May 2017 reveal that comet 41P/Tuttle-Giacobini-Kresak was spinning three times more slowly than it was in March, when it was observed by the Discovery Channel Telescope at Lowell Observatory, according to Bodewits et al. (2018, Nature, 553, 186.
  • Swift Renamed to the Neil Gehrels Swift Observatory (13 Jan 2018)
    In honor of Neil Gehrels (October 3, 1952 - February 6, 2017), who helped develop the mission and served as its principal investigator until his death last year, the Swift Gamma-Ray Burst Explorer has officially been renamed the Neil Gehrels Swift Observatory.
  • Swift CALDB Data updated (13 Jan 2018)
    The Swift SC clock correction has been updated (CALDB update version 20180103).
  • NICER/SEXTANT proves pulsars can function as a celestial GPS (12 January 2018)
    "NASA test proves pulsars can function as a celestial GPS", published in Nature, discusses how NICER/SEXTANT for the first time demonstrated in-space navigation using X-ray pulsars as a form of a Galactic Positioning System. This method will help spacecraft autonomously steer themselves through deep space. These results were featured in a press conference at the 231st Meeting of the AAS, in Washington DC.

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Last modified: Tuesday, 23-Jan-2018 00:30:04 EST