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To find and download HEASARC data in the cloud, you can use astroquery.heasarc or download our new tool, hark.

The HEASARC and NuSTAR teams are greatly saddened by the sudden passing of Katja Pottschmidt. Most recently Katja was the lead scientist for the NuSTAR Guest Observer Facility (GOF), a role she had supported for many years. During her science career she worked on many other high energy astrophysics missions and played an integral role in advancing our knowledge of the universe. She was a wonderful colleague and friend and will be keenly missed by all who knew her.

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

  • Xamin Interfaces
    • Xamin Web InterfaceIntro   
    Our faster and more powerful access to HEASARC data

    Xamin API and Batch Interface
    Access the database with the Xamin application programming interface (API) that can perform all of the same tasks as the UI. You can also use it from your command line.
    Xamin VO Standard APIs
    For the full flexibility of SQL queries to bring complicated query logic directly to the database, you can use our VO APIs. See also tutorials for how to access these APIs in Python.
  • 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 Proposal/Observation Info
    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
    • Command-Line Downloads
    Describes using our download script as well as wget and curl.

    If there is a published astronomical catalog that you would
    like added to the HEASARC, let us know.

    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
  • NuSTAR Caldb Update (30 Jun 2025)
    The NuSTAR FPM caldb was updated to version 20250630. This release includes a new clock correction file, v208 using a new temperature model. Please see the release notes for more details.
  • IXPE DU2 Anomaly (26 Jun 2025)
    IXPE's Detector Unit 2 (DU2) is operating in an anomalous but stable and functional state since 14 April 2025. The detector response has changed and the data processing is being adjusted. The spectral response has been corrected. The response for polarimetry and background filtering are being recalibrated. The data for observations after 10 May 2025 are being made available with DU2 event data removed. After the processing adjustments are completed and tested, new data sets will be released to HEASARC with DU2 included.
  • HEASoft 6.35.2 patch released (25 Jun 2025)
    HEASoft 6.35.2 patch update has been released. HEASoft 6.35.2 contains an update to the NICER software (NICERDAS v14).
  • Swift XRT CALDB updated (17 Jun 2025)
    The Swift XRT caldb has been updated to version 20250609 to update the XRT gains...
  • NuSTAR Caldb Update (17 Jun 2025)
    The NuSTAR FPM caldb was updated to version 20250617. This release includes a new clock correction file, v207 using a new temperature model. Please see the release notes for more details.
  • INTEGRAL Community Knowledge Transfer Workshop (04 Jun 2025)
    ESA plans to offer the scientific community an opportunity to access basic INTEGRAL data in the coming years. A knowledge transfer workshop on this topic is scheduled for half a day on 03 July 2025. The workshop venue is the Fraport Conference Center inside Frankfurt Airport, Germany.

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    Page maintainer: M. F. Corcoran
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    Last modified: Monday, 21-Apr-2025 17:48:34 EDT
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