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.


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Enter positions, times, missions, etc to query the HEASARC database.

Try ROSAT 3c273 1d to get ROSAT data within one degree of 3C273 or chanmaster bii>80 status='archived' to get archived Chandra observation data near the north galactic pole.

Note: For more than one target or when using any qualifier other than a mission, use quotes around targets that have embedded white space.(e.g., 'ar lac').

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Latest News
  • The Million Quasars Catalog (27 Jun 2016)
    The latest version (v4.8, 22 June 2016) of the Million Quasars (MILLIQUAS) Catalog (Eric Flesch 2009 - 2016) containing more than one million (1,422,497 to be exact) likely quasars is now available in both Browse and in Xamin.
  • Hitomi HXI CALDB Data Updated (24 Jun 2016)
    The Hitomi HXI CALDB has been updated to include 2 files, ah_hx1_instmap_20140101v002.fits and ah_hx2_instmap_20140101v002.fits, which were inadvertently left out of the June 22 2016 release
  • Large Quasar Astrometric Catalog, 3rd Release (23 Jun 2016)
    The 3rd edition of this catalog (from Souchay et al. 2015, A&A, 583, A75), which contains cross-identifications, optical, IR and radio data for 321,957 quasars, is now available in Browse and Xamin.
  • Hitomi CALDB Data Updated (22 Jun 2016)
    The Hitomi CALDB has been released for the HXI (version 20160606), the SXI (version 20160614), the SGD (version 20160614), Generic Mission (Gen) data (version 20160606) and the SXS (version 20160606)...
  • Suzaku CALDB updated (16 Jun 2016)
    The Suzaku CALDB has been updated for the XIS (update version 20160607) ...
  • LISA Pathfinder Mission Paves Way for Space-based Detection of Gravitational Waves (14 Jun 2016)
    LISA Pathfinder (LPF), an ESA-led mission with NASA contributions, has successfully tested a key technology needed to build a space-based observatory for detecting gravitational waves: it has reduced non-gravitational forces on the two floating test masses to a level about 10,000 times smaller than drag-free control technologies used on all previous science missions.

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Last modified: Monday, 27-Jun-2016 00:30:04 EDT