HEASARC: NASA's Archive of Data on Energetic Phenomena

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.

HEASARC Picture of the Week	APOD: Astronomy Picture of the Day
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Latest News

Updates to IXPE tools (31 Mar 2025)
HEASoft 6.35 has been released and contains updates to the IXPE software tools. Please see the release notes for more details. The HEASoft 6.35.1 patch release contains an update to the extractor tool that is important for IXPE users. Downloads are available from the HEASoft page. IXPE users are recommended to use the latest version of HEASoft for their analysis.
HEASoft 6.35.1 patch released (28 Mar 2025)
HEASoft 6.35.1 patch update has been released. HEASoft 6.35.1 contains an update to the extractor task.
BurstCube Calibration Database Released (27 Mar 2025)
The first BurstCube Calibration Database (version 20250226) has been released at the HEASARC. As part of this release, the CALDB caldb.config file has also been updated to include the BurstCube release, and the caldb setup tar file has been updated with the new caldb.config file.
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.

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

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