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Access to the catalogs and astronomical archives of the HEASARC

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HEASARC Data Access

  • Xamin Interfaces
  • Xamin Web InterfaceIntro   
    Our faster and more powerful access to HEASARC data
    Xamin Batch InterfaceDownload   
    Use Xamin from the command line on your machine
  • Browse Interfaces   Tips Archive
  • Browse Mission Interface  
    Our full-featured interface
    Browse Table Index
    Listing of all tables in the HEASARC database
    Browse Correlation of 2 Tables
    Correlation of more than 2 tables is available in Xamin
    Browse Notification Service
    Get notified when new data is available in the archive
    Use Xamin if you wish to monitor any query
    Browse Batch InterfaceDownload  
    Perl scripts (by default these now query Xamin database)

  • CMB Data
  • CMB Missions and Projects
    Data from space-bourne and suborbital CMB experiments in LAMBDA
  • Specialized forms
  • Argus Observation Monitor
    Search Browse proposal information for observation details and status
    Swift Data Query
    Search bursts and observations of the Swift mission

  • Direct Access to HEASARC archive directories
  • If there is a table you'd like added to the HEASARC let us know.

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    Other Resources

    • SkyView - An easy-to-use tool that returns digital images of the sky in any waveband from radio through to gamma rays
    • VAO DataScope - Query catalogs and services from the HEASARC and from around the world using a single form
    • Literature - Links to literature search engines and online versions of refereed journals and science magazines

    Archive Information

    Latest News

  • Fermi Science Tools Updated (13 Feb 2020)
    The FermiTools (formerly the SAE) were updated to version 1.2.23 on February 11, 2020. This release includes the NewMinuit package for statistical fitting, adds the PLSuperExpCutoff3 model and provides support for RadialDisk model to ModelEditor, along with bug fixes.
  • Re-brightening and decaying of MAXI J1348-630 as observed with NICER (11 Feb 2020)
    NICER observations of a new black hole candidate MAXI J1348-630 from Feb. 7 to 10 showed the source declining in X-ray flux by about a factor of 2 during this interval. NICER spectra show that the source is currently in the hard state. NICER will continue monitoring the source about once per day until the outburst fades.
  • Initial NICER observations of the mysterious source Swift J0840.7-3516 (aka GRB 200205A) and detection of short X-ray flaring activity (07 Feb 2020)
    The source Swift J0840.7-3516 was originally reported as a Gamma-ray burst sourcce by the Swift BAT on February 5. Followup observations by the Swift XRT showed X-ray emission that was inconsistent with a GRB, along with the possible detection of an 8.96 seconds. Followup X-ray observations with NICER showed X-ray flaring during which the X-ray flux increasd by a factor of 4, but did not confirm the X-ray period.
  • Updated Million Quasars Catalog (v6.4c) (05 Feb 2020)
    The latest version (v6.4c, 31 Dec 2019) of the Million Quasars (MILLIQUAS) Catalog (Eric Flesch 2009 - 2019) containing a lot more than one million (1,979,676 to be exact) likely quasars is now available in both Browse and Xamin.
  • NICER observes a new outburst of V4641 Sgr (04 Feb 2020)
    V4641 Sgr is a binary system that contains a 6.4 solar mass black hole which went into X-ray outburst in early January. Observations by NICER on January 31 provided the best measure of the 2-10 keV spectrum and showed an inner disk radius temperature of about 1.5 keV, with no visible features in the power spectrum in the short NICER observation.
  • XMMSTACK- XMM-Newton Serendipitous Source Catalog from Stacked Observations (4XMM-DR9s) Released (03 Feb 2020)
    The stacked catalog (XMMSTACK) and associated observation data ( XMMSTACKOB) offer new versions of the stacked catalog built from 6,604 4XMM-DR9 overlapping observations. XMMSTACK contains 1,329 stacks (or groups). The catalog contains 288,191 sources, with each observation also provided in the associated XMMSTACKOB table. Both are now available in Browse and Xamin.
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