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 not only data obtained by high-energy astronomy missions observing in the extreme-ultraviolet (EUV), X-ray, and gamma-ray bands, but also 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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APOD: Astronomy Picture
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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 Observations 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
  • Stage-I Selections for the Fermi Cycle-8 GI Program Completed (27 Jun 2015)
    The stage-I selections for the Fermi Cycle-8 Guest Investigator Program have now been completed. The list is available here. The selection letters and peer evaluations will be distributed in the near future.
  • Fermi LAT Pass 8 data now available (25 Jun 2015)
    Fermi LAT Pass 8 data is now available from the Fermi Science Support Center's LAT data servers. The Pass 8 LAT data includes a number of improvements over the reprocessed Pass 7 data. Improvements include a better PSF, improved energy measurement, and increased acceptance across the whole energy band. As of the Pass 8 release date (June 24, 2015), reprocessed Pass 7 data is no longer available from the LAT data servers. Details can be found here.
  • Fermi Science Analysis Environment Updated for LAT Pass 8 Data (25 Jun 2015)
    The FSSC is pleased to announce the availability of a new version of the Fermi Science Tools, v10r0p5, released on June 24, 2015. This version includes support for pass 8 processed data and must be used in order to analyze pass 8 data. Details and software download can be found here.
  • NuSTAR CALDB Update (22 Jun 2015)
    The NuSTAR CALibration DataBase was updated on June 22, 2015 (CALDB version 20150612). This updates the NuSTAR clock correction file to version 49 (good through June 12, 2015).
  • Australia Telescope Local Group Dwarf Spheroidals (dSphs) 2.1-GHz Components Catalog (19 Jun 2015)
    This catalog of 1,834 radio source components detected by the ATCA in the fields of 6 Local Group dSphs (Carina, Fornax, Sculptor, Bootes II, Segue 2, and Hercules) from Regis et al. (2015, MNRAS, 448, 3731) is now available in Browse and Xamin.
  • Recovery effort for Suzaku after communication failure (19 Jun 2015)
    Communication with Suzaku has become intermittent since June 1, preventing normal operations. Recovery effort continues.

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Last modified: Sunday, 28-Jun-2015 00:30:03 EDT