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Access to the catalogs and astronomical archives of the HEASARC

Select an interface or start using our keyword search tool below.

HEASARC Data Access

  • New Xamin Interfaces
  • Xamin Web InterfaceIntro   
    Our new faster and more powerful access to HEASARC data
    Xamin Batch InterfaceDownload   
    Use Xamin from the command line on your machine
  • Traditional Browse Interfaces   Tips Archive
  • Browse Mission Interface  
    Our traditional full-featured interface
    Browse Keyword Search
    Search-Engine-like query using keywords
    Browse Table Index
    List of all tables for each mission
    Browse Correlation
    Cross-correlation of full tables
    Browse Notification Service
    Get notified when new data is available in the archive
    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
  • KML Browse Interface
    Map Browse sources in Google Sky and other KML services
    Chandra FOV Search
    Search for targets within the active fields of view
    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
  • HTTP or FTP

    Browse Quick form divider

    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 Finds Record-breaking Binary in Galaxy Next Door (13 Oct 2016)
    Using data from NASA's Fermi Gamma-ray Space Telescope and other facilities, an international team of scientists has found the first gamma-ray binary in another galaxy and the most luminous one ever seen. The dual-star system, dubbed LMC P3, contains a massive star and a crushed stellar core that interact to produce a cyclic flood of gamma rays, the highest-energy form of light. A paper on these results has just appeared in ApJ and is available online here.
  • XSPEC 12.9.0q,r,s Released (4 Oct 2016)
    XSPEC patches 12.9.0q,r,s, released August 19. Fixes issues with simftest, the GW method for MCMC, and 2-D contour plotting.
  • Viewing tool updated (28 Sep 2016)
    Support for NICER has been added, and support for Hitomi has been removed.
  • NuSTAR CALDB Update (23 Sep 2016)
    The NuSTAR CALibration DataBase was updated on August 30, 2016 (CALDB version 20160922). This updates the NuSTAR clock correction file to version 61, valid through 2016-09-22.
  • VLA Orion Nebula Cluster Compact Source Catalog (21 Sep 2016)
    A deep cm-wavelength catalog of 556 compact sources found in a 30-hr Jansky Very Large Array observation of the Orion Nebula Cluster (from Forbrich et al. 2016, ApJ, 822, 93) is now available in Browse and Xamin.
  • Fermi Science Analysis Environment Source package Updated Mac OS X El Capitan (20 Sep 2016)
    The FSSC is pleased to announce the availability of a version of the Fermi Science Tools that can be built from source on Darwin 15.6 (el Capitan). This release is only for users with problems using the binary version of the tools on el Capitan. Note that this version of the tools does not support the ROOT or gtburst software. The source code package can be found here.
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    Last modified: Thursday, 16-Jul-2015 14:58:00 EDT

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