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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

  • XSPEC 12.9.0h Released (24 Nov 2015)
    Patch 12.9.0h, released November 19, restores the ability to read in XFLT keywords whose values are numbers encoded as strings.
  • Swift CALDB Data updated (16 Nov 2015)
    A new Swift clock correction file has been added to the Swift SC Caldb (update version 20151105) ...
  • Fermi Finds Hints of Gamma-ray Cycle in the Active Galaxy PG 1553+113 (15 Nov 2015)
    Astronomers using data from NASA's Fermi Gamma-ray Space Telescope have detected hints of periodic changes in the brightness of a so-called "active" galaxy, whose emissions are powered by a supersized black hole. If the 2.18 year gamma-ray period is confirmed, the discovery would mark the first years-long cyclic gamma-ray emission ever detected from any galaxy, which could provide new insights into physical processes near the black hole (see Ackermann et al. 2015, ApJL, 813, L41 for more details).
  • Fermi Has Detected an extremely bright gamma-ray pulsar in the Large Magellanic Cloud (13 Nov 2015)
    The Fermi Gamma-ray Space Telescope Large Area Telescope (LAT) Collaboration has detected pulsed gamma-ray emission from a previously known X-ray pulsar in the LMC, PSR J0540-6919 (2015, Science, 350, 801). This object is the first gamma-ray pulsar detected in another galaxy and, at 20 times more luminous in gamma-rays than the Crab pulsar, the brightest yet observed in this energy band.
  • NASA's Swift Spots its Thousandth Gamma-ray Burst (12 Nov 2015)
    The Swift spacecraft has detected its 1,000th gamma-ray burst (GRB). GRBs are the most powerful explosions in the universe, typically associated with the collapse of a massive star and the birth of a black hole. "Detecting GRBs is Swift's bread and butter, and we're now at 1,000 and counting," said Neil Gehrels, the Swift principal investigator at NASA's Goddard Space Flight Center. "The spacecraft remains in great shape after nearly 11 years in space, and we expect to see many more GRBs to come."
  • XSPEC 12.9.0f,g Released (10 Nov 2015)
    Patch 12.9.0f fixes a problem with the installation of the NEI v2 files. Patch 12.9.0g fixes a problem with the interpretation of levels in plot contour.
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