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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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- HEASoft 6.37 released (13 Aug 2026)
HEASoft 6.37 has been released. This includes xspec v13.0, a major upgrade to xspec with many new features, and new and updated mission-
specific data analysis software (IXPE, MAXI, NuSTAR, XRISM, etc.) Please see the 6.37 release notes for details.
- NuSTAR Caldb Update (10 Aug 2026)
The NuSTAR FPM caldb was updated to version 20260807. This release includes a new clock correction file, v231, using a new temperature model. Please see the release notes for more details.
- NuSTAR Caldb Update (10 Aug 2026)
The NuSTAR FPM caldb was updated to version 20260807. This release includes a new clock correction file, v231, using a new temperature model. Please see the release notes for more details.
- AMS-02 All Particle Rates Catalog Released (04 Aug 2026)
This catalog records the incident rates for all particle species
obtained with the Alpha Magnetic Spectrometer (AMS-02) experiment on the
International Space Station (ISS), a cosmic ray particle detector installed
in May 2011, which covers the energy range of ~0.1 GeV - ~2 TeV. The
catalog is available in both
Browse
and Xamin.
- IXPE Cycle 4 Now Accepting Proposals (04 Aug 2026)
The due date for IXPE Cycle 4 proposal submission is Sept 17, 2026. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). For more information about this cycle, please visit the IXPE Cycle 4 Guide for Proposals Page.
- Required work plan moved to Expertise and Resources document (30 Jul 2026)
IXPE Cycle 4 proposers should note that the required one paragraph work plan has been moved to the Non-anonymized Expertise and Resources (E&R) document and should be non-anonymized. Consequently, the page limit for the E&R document has now been increased to 2 pages. For more information, please visit the Cycle 4 proposal guide. For any questions about proposal submission and guidelines, please contact the IXPE help desk.
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HEASARC News
Upcoming Dates & Deadlines
Upcoming Astronomy Meetings
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