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 Probes Puzzling Galaxy Merger (28 Mar 2017)
A supermassive black hole (SMBH) inside a tiny galaxy is
challenging scientists' ideas about what happens when two galaxies merge.
Was 49 is the name of a system consisting of a large disk galaxy, referred to
as Was 49a, merging with a much smaller "dwarf" galaxy called Was 49b. The
dwarf galaxy rotates within the larger galaxy's disk, about 26,000 light years
from its center. Using NuSTAR, Secrest
et al. (2017, ApJ, 836, 183), have discovered that the
dwarf galaxy is so luminous in high-energy X-ray, it must host an SMBH much
larger and more powerful than expected for such a lightweight.
- BETA Pilot Multi-Epoch Continuum Survey of Spitzer SPT Deep Field (24 Mar 2017)
This catalog of 3,722 radio source components detected by the
Boolardy Engineering Test Array (BETA) prototype of the Australian Square
Kilometre Array Pathfinder (ASKAP) in the 711-1015 MHz band in 150 sq.
deg. covering two-thirds of the Spitzer South Pole Telescope Deep Field
et al. 2016, MNRAS, 457, 4160) is now available
in Browse and
- Andromeda's Bright Hard X-Ray Mystery Source Identified by NuSTAR (24 Mar 2017)
The Milky Way's close neighbor galaxy Andromeda (M 31), features a
dominant source of high-energy X-ray emission, but its identity has been
mysterious until now. As reported in a new study by
et al. (2017, ApJ, in press), NASA's NuSTAR (Nuclear
Spectroscopic Telescope Array) mission has pinpointed the object responsible
for this high-energy radiation to be Swift J0042.6+4112, a possible pulsar,
the dense remnant of a dead star that is highly magnetized and spinning.
- Viewing tool updated (23 Mar 2017)
Swift's orbital pole constraints have been updated in the
Viewing tool. The revised coefficients extrapolate the trend for the
- NICER expected launch date: May 14, 2017 (21 March 2017)
NICER is currently scheduled for launch to the ISS on May 14, 2017 from the Kennedy Space Center.
- NASA's Swift Mission Maps a Star's 'Death Spiral' into a Black Hole (21 Mar 2017)
Some 290 Myrs ago, a star much like the sun wandered too
close to the central black hole of its galaxy. Intense tides tore the star
apart, which produced an eruption of optical, UV and X-ray light that
first reached Earth in 2014. Now, a team of scientists using observations from
Swift have mapped out how and where these different wavelengths were produced
in the event, named ASASSN-14li, as the shattered star's debris circled the
black hole: see Pasham et al.
(2017, ApJ837, L30) for the full details.
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