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
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.
- NuSTAR Caldb Update (31 May 2023)
The NuSTAR FPM caldb was updated to version 20230530. This release includes a new clock correction file, v161. Please see the release notes for more details.
- IXPE on the cover of Nature Astronomy (26 May 2023)
IXPE made the cover of the May 2023 edition of Nature Astronomy with a polarized view of the Crab. The work by Bucciantini et al. provides insight into the magnetic field morphology and the generation of turbulence in this young supernova remnant system.
- HEAD Spring 2023 newsletter released (25 May 2023)
This newsletter is available now for your reading pleasure at your electronic HEAD newsstand !
- Swift SC CALDB updated (17 May 2023)
The Swift SC caldb has been updated to version 20230517 ...
- NuSTAR Caldb Update (16 May 2023)
The NuSTAR FPM caldb was updated to version 20230516. This release includes a new clock correction file, v160. Please see the release notes for more details.
- Million Optical/Radio/X-Ray (MORX) Associations Catalog (15 May 2023)
Optical/Radio/X-Ray (MORX) Associations Catalog is a compendium of optical objects which are calculated as being associated with Chandra, XMM-Newton, Swift, or ROSAT X-ray sources, or with NVSS, FIRST, VLASS, LoTSS, RACS, or SUMSS radio sources or double radio lobes. The latest version (v2, 15 May 2023) of the
Optical/Radio/X-Ray (MORX) Associations Catalog (Eric Flesch 2016 - 2023)
is now available in both Browse
This version contains over 3 million (3,101,306 to be exact) optical
objects with probable radio/X-ray associations.
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