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.
- ARK/RPS Downtime Scheduled for 2021-02-24 Completed (24 Feb 2021)
The scheduled maintenance for the ARK database has completed,
and ARK/RPS is fully operational. If you encounter any issues, please contact
the ARK Help Desk.
- NuSTAR Caldb Update (23 Feb 2021)
The NuSTAR FPM caldb has been updated to version 20210210. This release includes a new clock correction file, v116, along with new alignment files and a new beryllium window file. Please see the release notes for more details.
- ARK/RPS Downtime Scheduled for 2021-02-24 (23 Feb 2021)
ARK/RPS will be down for maintenance starting on Wednesday,
February 24, 2021, at ~2:30pm EST (19:30 UTC). It should be back up within an
hour. We apologize for any inconvenience.
- Fermi Cycle-14 Proposal Deadline Extension (21 Feb 2021)
Owing to the severe weather situation and power outages in Texas and other areas, NASA has decided to postpone the Fermi Cycle-14 proposal deadline until 16:30 PM EST March 1,
2021. Please refer to the Fermi website for more information.
- Resumed NICER observations of the magnetar SGR 1830-0645 (19 Feb 2021)
NICER has resumed observation of the magnetar SGR 1830-064 since it emerged from sun constraint on February 10. NICER shows that the source flux decay has flattened compared to values early in the outburst.
- Updated Million Quasars Catalog (v7.1) (18 Feb 2021)
The latest version (v7.1, 14 Feb 2021) of the
(MILLIQUAS) Catalog (Eric Flesch 2009 - 2021)
containing more than a million (1,548,897 to be exact) likely quasars
is now available in both Browse and
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