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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.
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Latest News
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- XRISM Caldb Correction (18 Mar 2025)
The XRISM caldb.indx file released as part of the 20250315 XRISM Resolve caldb release was incorrect. The correct caldb.indx file is now installed in the XRISM Resolve CALDB, and the tar files updated. Please replace previously downloaded versions of the caldb.indx20250315 in the $CALDB/data/xrism/resolve/index directory with the corrected version.
- NuSTAR Caldb Update (18 Mar 2025)
The NuSTAR FPM caldb was updated to version 20250317. This release includes a new clock correction file, v201. Please see the release notes for more details.
- XRISM Cycle 2 call for GO proposals: (17 Mar 2025)
The XRISM Cycle 2 call for GO proposals has been announced and is now open. The due date for XRISM Cycle 2 proposal submission is May 15, 2025. See the Proposals and Tools webpage for more information.
- XRISM Caldb Update (15 Mar 2025)
An update to the XRISM Caldb for the Resolve, XTEND and gen instruments is now available. Tar files can be downloaded from the XRISM Calibration page.
- IXPE Caldb Updated (14 Mar 2025)
The IXPE Caldb has been updated for the XRT (version 20241028) and the GPD (version 20250225). Please see the release notes for details. Downloads are available from the IXPE Calibration page. Users can also access the HEASARC IXPE caldb via remote access.
- Chandra Source Catalog v2.1.1 (CSC) Released (14 Mar 2025)
The Chandra Source Catalog (CSC) is the definitive catalog of X-ray
sources detected by the Chandra X-ray Observatory. The CSC
delivers a wide variety of uniformly calibrated properties and
science ready data products for detected sources over four decades
of flux. The Chandra Source Catalog version 2.1 (CSC 2.1) was released on April 2nd 2024; the current minor release is version 2.1.1, updated on 2024 October 18. This release of the catalog includes measured properties for 407,806 unique compact and extended X-ray sources in the sky, allowing statistical analysis of large samples, as well as individual source studies in the "Master Sources" table, available in Browse and
Xamin.
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HEASARC News
Upcoming Dates & Deadlines
Upcoming Astronomy Meetings
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