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
  • 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.

RSS [What is this?]

HEASARC News
Upcoming Dates & Deadlines
Upcoming Astronomy Meetings


HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public

Last modified: Wednesday, 02-Apr-2025 15:14:15 EDT