To find and download HEASARC data in the cloud, you can use astroquery.heasarc or download our new tool, hark.
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 6.35.1 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
- Swift XRT CALDB updated (17 Jun 2025)
The Swift XRT caldb has been updated to version 20250609 to update the XRT gains... - INTEGRAL Community Knowledge Transfer Workshop (04 Jun 2025)
ESA plans to offer the scientific community an opportunity to access basic INTEGRAL data in the coming years. A knowledge transfer workshop on this topic is scheduled for half a day on 03 July 2025. The workshop venue is the Fraport Conference Center inside Frankfurt Airport, Germany. - First Public Release of the INTEGRAL Science Legacy Archive (04 Jun 2025)
The INTEGRAL Science Legacy Archive (ISLA) provides access to all consolidated data as well as high level products like time series, spectra and mosaics per observation for the high energy sources detected over the course of the mission's 22+ years science operations. In addition, a Community portal allows scientists to promote and make accessible their own science products. - NuSTAR Caldb Update (03 Jun 2025)
The NuSTAR FPM caldb was updated to version 20250602. This release includes a new clock correction file, v206 using a new temperature model. Please see the release notes for more details. - Swift SC CALDB updated (29 May 2025)
The Swift SC has been updated to version 20250515 to update the clock correction file to v166 ... - HEAD Spring 2025 newsletter released (23 May 2025)
This newsletter is available now for your reading pleasure at your electronic HEAD newsstand !
- Swift XRT CALDB updated (17 Jun 2025)
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Upcoming Deadlines
- 10/10/2025:AO-25 XMM Newton Deadline
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Upcoming Meetings
- Chandra/CIAO Workshop: 2025 May 19 - 23
- Massive Galaxies: 2025 Jun 09 - 13
- X-ray Quasi-Periodic Eruptions and Repeating Nuclear Transients: 2025 Jun 16 - 19
- Dancing in the Dark When Galaxies Shape Galaxies - Sexten Center for Astrophysics: 2025 Jun 16 - 20