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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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- NICER sees the contraction of the corona in a black hole X-ray transient (14 Jan 2019)
NICER made the cover of Nature with an analysis by Kara et al. of the temporal behavior of the X-ray spectrum of the black hole transient system MAXI J1820+070. Their analysis of the time-resolved NICER spectra of this system showed that the inner edge of the accretion disk is near the accreting black hole and that variations in the X-ray spectral lags indicated that the corona shrank over a time interval of a few weeks.
- Updated Million Quasars Catalog (v5.7) (07 Jan 2019)
The latest version (v5.7, 7 January 2019) of the
Million Quasars
(MILLIQUAS) Catalog (Eric Flesch 2009 - 2018)
containing a lot more than one million (1,983,749 to be exact) likely quasars
is now available in both Browse and
Xamin.
- Accessing CALDB data through the CALDB Mirror (21 Dec 2018)
In case the HEASARC CALDB is unavailable, users can still access CALDB data from the CALDB mirror site hosted at the CfA. The mirror CALDB is available at ftp://cda.cfa.harvard.edu/pub/arcftp/heasarc/caldb/. Remote access users should set their CALDB environment variable to
% setenv CALDB ftp://cda.cfa.harvard.edu/pub/arcftp/heasarc/caldb/
(for c-shell users) and make sure your local CALDBCONFIG
and CALDBALIAS files are up to date.
- Updated Million Quasars Catalog (v5.6) (19 Dec 2018)
The latest version (v5.6, 17 December 2018) of the
Million Quasars
(MILLIQUAS) Catalog (Eric Flesch 2009 - 2018)
containing a lot more than one million (1,984,120 to be exact) likely quasars
is now available in both Browse and
Xamin.
- Chandra CALDB 4.8.2 installed at the HEASARC (14 Dec 2018)
The Chandra CalDB 4.8.2 is now installed and available at the HEASARC. Chandra 4.8.2 was released by the CXC on December 13, 2018...
- NuSTAR Guest Observer (GO) Cycle 5 (13 Dec 2018)
The due date for NuSTAR Cycle 5 proposal submission is
Jan 25, 2019. Proposals should be submitted via the HEASARC's ARK
Remote Proposal System (RPS). New in Cycle 5 are
the opportunity to propose for large programs and and the opportunity
for joint observations with NICER. For more information about this cycle,
please visit the NuSTAR Proposal
page.
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Last modified: Friday, 10-Aug-2018 08:29:24 EDT
The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 18 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. We thank you in advance for your valuable feedback.
