Other Resources
- SkyView - An easy-to-use
tool that returns digital images of the sky in any waveband from radio
through to gamma rays
- VAO DataScope - Query catalogs and services from
the HEASARC and from around the world using a single form
- Literature - Links to literature
search engines and online versions of refereed journals and science
magazines
Archive Information
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Latest News
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Chandra CALDB 4.7.5.1 installed at the HEASARC (21 Jul 2017)
CalDB 4.7.5.1 is now installed and available at the HEASARC. Chandra 4.7.5.1 was released by the CXC on July 20, 2017...
NuSTAR CALDB Update (21 Jul 2017)
The NuSTAR CALibration DataBase was updated on July 21, 2017 (CALDB version 20170720). This updates the NuSTAR clock correction file to version 73, valid through 2017-07-20.
Press Release: Astrosat, Chandra, Hubble Simultaneously Detect a Coronal Explosion on the Nearest Planet-Hosting Star (20 Jul 2017)
Stars like Proxima Centauri are known to flare on timescales of a
few minutes to hours. The ongoing analysis of the data for this flare detected
on 31 May 2017 suggests
that the flux increases by several orders of magnitude in both X-rays and UV
and lasts ~1800 seconds. The energy released during this flare is of the order
of ~10 30 erg, 100 times the energy of large solar
flares.
Sloan Digital Sky Survey Quasar Catalog (12th Data Release: DR12Q) (20 July 2017)
The SDSS DR12Q Catalog listing the X-ray, UV,
optical, IR and radio properties of 297,301 quasars, as well as their
redshifts, that were identified in the Baryon Oscillation Spectroscopic Survey
(BOSS) of the SDSS-III via visual inspection of their spectra (from Paris
et al. 2017, A&A, 597, A79) is now available in
Browse and
Xamin
Gamma-ray Telescopes Reveal a High-energy Trap in Our Galaxy's Center (19 Jul 2017)
A combined analysis of data from the Fermi Gamma-ray Space
Telescope and the High Energy Stereoscopic System (HESS), a ground-based
observatory in Namibia, suggests the Galactic Center contains a "trap"
that concentrates some of the highest-energy cosmic rays, among the fastest
particles in the Galaxy. Gaggero et al.
(2017) combined low-energy Fermi LAT data
with high-energy HESS data of the Galactic Center to create a
continuous gamma-ray spectrum describing this emission across
a thousand-fold span of energies.
NICER First Light (17 Jul 2017)
NASA's new Neutron star Interior Composition Explorer (NICER) mission to study the densest observable objects in the universe has begun science operations.
To date, NICER has observed over 40 celestial targets to calibrate the X-ray Timing Instrument and supporting star-tracker camera.
The observations also validated the payload's performance that will enable its key science measurements.
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