The High Energy Astrophysics Science Archive Research Center (HEASARC) is the primary archive for NASA's (and other space agencies') missions studying electromagnetic radiation from extremely energetic cosmic phenomena ranging from black holes to the Big Bang. Since its merger with the Legacy Archive for Microwave Background Data Analysis (LAMBDA) in 2008, the HEASARC archive contains data obtained by high-energy astronomy missions observing in the extreme-ultraviolet (EUV), X-ray, and gamma-ray bands, as well as data from space missions, balloons, and ground-based facilities that have studied the relic cosmic microwave background (CMB) radiation in the sub-mm, mm and cm bands.

The HEASARC is a member of the NASA Astronomical Virtual Observatories (NAVO) where we work with other NASA archives to ensure comprehensive and consistent VO access to NASA mission datasets. Users may now query the HEASARC's catalogs using VO-enabled services and specialized tools. This page describes how to get to the HEASARC VO-enabled services and provides information on other HEASARC VO activities.

Latest News
  • HEASoft 6.29c now available on SciServer (14 Oct 2021)
    HEASoft 6.29c, along with ciao 4.13, XMM SAS v19, and Fermitools 2.0.8 is now available on the SciServer virtual science platform. SciServer provides a powerful data analysis environment with access to the entire HEASARC archive mounted locally, allowing users to analyze HEASARC data without having to install software.
  • NuSTAR Caldb Update (06 Oct 2021)
    The NuSTAR FPM caldb has been updated to version 20211004. This release includes a new clock correction file, v125. Please see the release notes for more details.
  • The NICER Enhanced Visibility Calculator Released (05 Oct 2021)
    The NICER Enhanced Visibility Calculator calculates NICER visibilities for targets over roughly the next 2-week period taking into account ISS orientation and target occultation by ISS structures, and other relevant constraints. These visibility intervals are more accurate than visibilities based solely on Sun and Moon avoidance
  • Fermi LAT Long-Term Transient Source Catalog (29 Sep 2021)
    The First Catalog of Long-Term Transient Sources detected by Fermi Large Area Telescope (LAT) comprises of 142 unique, transient sources that were detected on monthly time intervals during Fermi-LAT operations. The monthly time scale allows to identify transient and variable sources that were not yet reported in other Fermi-LAT catalogs. This catalog is now available in Browse and Xamin.
  • NASA Hubble Fellowship Program (NHFP) Now Accepting Applications (29 Sep 2021)
    The NHFP supports promising postdoctoral scientists performing independent research that contributes to NASA Astrophysics. The research may be theoretical, observational, and/or instrumental. The Announcement of Opportunity, which includes detailed program policies and application instructions, is available at the website. The application submission page will be open from September 2 until November 4, 2021.
  • XSPEC 12.12.0c-e Patch Released (29 Sep 2021)
    Fix to issue with smaug model, minor fixes to the kerrconv and refsch models, several modifications to the XSPEC model.dat model definitions file

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Last modified: Wednesday, 08-Sep-2021 18:38:35 EDT