HEASARC's web sites were down from Saturday Oct 24 - Weds Oct 28 due to addressing the PHP security vulnerability issue.
HEASARC
NASA's designated multi-mission astronomy archive for cosmic astronomy datasets for observations in the extreme ultraviolet (EUV), X-ray, and gamma-ray wave bands, as well as for cosmic microwave background (CMB) datasets.LAMBDA
LAMBDA is a multi-mission NASA center of expertise for cosmic microwave background (CMB) radiation research; it provides CMB researchers with archive data from cosmology missions, software tools, and links to other sites of interest.Please wait for the query to run. You will be redirected to the search portal
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Archive
Data discovery and exploration can be done through the interactive Web Portal
(The classic Browse portal remains available.)
API access is available through the Xamin API, the astroquery Heasarc module, or the Virtual Observatory protocols using pyvo. -
Cloud & Platforms
HEASARC@SciServer is an analysis-ready platform where both data and software are available through the browser.
The HEASARC is also part of the NASA Fornax Initiative to build NASA's next generation cloud-based science platform.
HEASARC data are available in the cloud and on SciServer. -
Software
- HEASoft 6.37.0 is now available.
- HEASoft and XSPEC are available as conda packages.
- HEASoft and other high energy software (CAIO, XMM-SAS, Fermitools, Spex etc) are installed and available on SciServer.
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Latest News
- NuSTAR Caldb Update (21 Oct 2026)
The NuSTAR FPM caldb was updated to version 20261020. This release includes a new clock correction file, v234, using a new temperature model. Please see the release notes for more details. - New XMM-Newton Grant Procedure (14 Oct 2026)
Anyone applying for XMM grants must now use SciENcv to make their biosketch and current and pending funding forms - XMM-Newton GOF-SOC Bulletin Quarterly Releases (14 Oct 2026)
Sign up here to receive an email for when the GOF-SOC Quarterly Bulletin is released! - NuSTARDAS v2.1.6 Required for Recent NuSTAR Observations (29 Sep 2026)
Analyzing any observations taken on or after September 24, 2026, requires NuSTARDAS v2.1.6. in the latest HEASoft v6.37.1 release. The general analysis process remains exactly the same. - NuSTAR Caldb Update (27 Sep 2026)
The NuSTAR FPM caldb was updated to version 20260923. This release includes a new clock correction file, v233, using a new temperature model. Please see the release notes for more details. - IXPE Data Reprocessing (18 Sep 2026)
The IXPE Science Operations Center has begun reprocessing IXPE observations beginning with the first observation of the baseline mission, the supernova remnant Cas A (ObsID 01001301). Reprocessing will proceed chronologically through all observations taken prior to 08 April 2025. Observations made beyond that date have already been processed with the latest software version. Reprocessing often results in improved energy gain, improved aspect determination, and increased exposure times. To determine if a particular observation has been reprocessed, check, e.g., the processing date field in HEASARC's Browse interface or the DATE keyword value in the Level 2 event list files.
- NuSTAR Caldb Update (21 Oct 2026)
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Upcoming Deadlines
- 11/01/2026: NASA Postdoctoral Deadline
- 12/03/2026: Step 2 Deadline for Theoretical and Computational Astrophysics Networks (TCAN)
- 12/03/2026: XRISM Key Program Deadline
- 01/28/2027: Cycle 13 Deadline for NuSTAR General Observer
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Upcoming Meetings
- Young Astronomers on Active Galactic Nuclei (YAGN) 26: 2026 Oct 26 - 28
- Joint Space-Science Institute (JSI) 2026 Workshop: A NICER Legacy: Neutron Stars, Black Holes, and Time-Domain Astronomy
- The ARC Of the Universe: 2026 Nov 30 - Dec 3
- XPOCO: X-ray Polarization Of Compact Objects: 2027 Jan 11 - 15