Come analyze HEASARC, IRSA, and MAST data in the cloud! The Fornax Initiative is now welcoming all interested beta users.
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
- 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.
- HEASoft 6.37 released (13 Aug 2026)
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Upcoming Deadlines
- 08/18/2026: Step 2 Deadline for Research Initiation Awards (RIA)
- 09/10/2026: Step 1 (Mandatory NOI) Deadline for Habitable Worlds Observatory Precursor Science Investigations (HWO-PSI)
- 09/17/2026: Cycle 4 Deadline for IXPE General Observer
- 09/17/2026: Cycle 9 Deadline for NICER General Observer
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Upcoming Meetings
- Chandra’s Dynamic Universe: 2026 Aug 18 - 20
- Tidal Disruption Events and Nuclear Transients in Crete vol. 2: 2026 Aug 24 - 28
- 2026 POSYDON School: 2026 Aug 24 - 27
- Binary compact objects on eccentric orbits and their gravitational-wave signatures: 2026 Sep 01 - 06