Latest News Other Resources Archive Information

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 in the HEASARC database: if we don't have the one you want, ask us to add it
    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

  • Swift CALDB Data updated (13 Jan 2018)
    The Swift SC clock correction has been updated (CALDB update version 20180103).
  • NICER/SEXTANT proves pulsars can function as a celestial GPS (12 January 2018)
    "NASA test proves pulsars can function as a celestial GPS", published in Nature, discusses how NICER/SEXTANT for the first time demonstrated in-space navigation using X-ray pulsars as a form of a Galactic Positioning System. This method will help spacecraft autonomously steer themselves through deep space. These results were featured in a press conference at the 231st Meeting of the AAS, in Washington DC.
  • Preliminary Fermi LAT 8-year Point Source List Available (05 Jan 2018)
    A preliminary Fermi LAT 8-year Point Source List (FL8Y), based on the first eight years of science data from the Fermi Gamma-ray Space Telescope mission and the 100 MeV-1 TeV range has been released by the Fermi project. The FL8Y source list has twice as much exposure as the 3FGL, and includes a number of analysis improvements, but does not use an updated model for Galactic diffuse gamma-ray emission. The FL8Y source list includes 5524 sources above 4-sigma significance, and includes source location regions and spectral properties.
  • General Catalog of Variable Stars, Version 5.1, March 2017 (03 Jan 2018)
    The latest version of this catalog of 52,011 confirmed variable stars (from Samus et al. 2017, ARep, 61, 80) is now available in Browse and in Xamin.
  • XSPEC 12.9.1u Patch Released (02 Jan 2018)
    Adds proper handling of gain fit parameters when stored and read back in with and Xset.restore in PyXspec. Released Dec 27, 2017.
  • FERMI3FHL - Third Catalog of Hard Fermi-LAT Sources (3FHL) (21 Dec 2017)
    This catalog (from Ajello et al. 2017, ApJS, 232, 18) contains 1,558 objects that have been characterized in the 10 GeV to 2 TeV energy range by Fermi's Large Area Telescope (LAT) in the first 7 years of observations using the Pass 8 event-level analysis. The sensitivity and angular resolution are improved by factors of 3 and 2 relative to the previous LAT catalog at the same energies (1FHL). 3FHL is now available in both Browse and Xamin.
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    Last modified: Wednesday, 24-May-2017 12:39:54 EDT

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