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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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- Viewing tool updated (24 Jun 2026)
The Viewing tool's Sun angle constraint for NuSTAR observations
has been updated to reflect the mission's new requirements.
- xTime tool updated (22 Jun 2026)
A new version of the xTime mission date/time conversion tool has
been released that adds support for the IXPE mission and fixes some
long-standing issues with converting date/times that correspond to leap
seconds and negative MET seconds (for all missions except RXTE and
Swift).
- IXPE DU2 Data Delivery Resumed (15 Jun 2026)
Delivery of data from IXPE's Detector Unit 2 (DU2) has resumed. The IXPE team performed an extensive recalibration campaign including 2.7 Ms of exposure on the bright X-ray binary Cyg X-2 in December 2025 and January 2026. The recalibration has successfully restored the polarization and spectral response of DU2. All data since the anomaly in April 2025 have been reprocessed and re-delivered with DU2. Data delivery for new observations now includes DU2. Users are encouraged to compare the results obtained with the different DUs and report any significant discrepancies via the IXPE Help Desk. For more information on the anomaly, please see this presentation by the IXPE SOC.
- The Swift-XRT Living Point Source Catalog (LSXPS) Released (11 Jun 2026)
This table contains the LSXPS catalog of detections by the Swift
X-ray Telescope (XRT) used in Photon Counting (PC) mode in the 0.3-10 keV
energy range. Under normal operations, this is updated in near-real time,
and transient searches are carried out on each dataset as it is received.
This catalog is now available in both Browse
and Xamin.
- AMS02SPEC - AMS-02 Spectral Results Catalog Released (11 Jun 2026)
The AMS02SPEC database table records the spectral results
obtained with the Alpha Magnetic Spectrometer experiment on the International
Space Station (AMS-02). It is available in both
Browse
and Xamin.
- XMMSTACKOB: 5XMM-DR15 XMM-Newton Serendipitous Source Catalog: 5XMM-DR15 Stacked Observations Data Catalog Released (10 Jun 2026)
The XMM-Newton Serendipitous Source Catalog: 5XMM-DR15 Stacked Observations Data provides the list of stacks used for the new 5XMM-DR15 catalog (XMMSTACK). This catalog is
now available in both Browse
and Xamin.
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HEASARC News
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Last modified: Wednesday, 02-Apr-2025 15:14:15 EDT
