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 not only data
obtained by high-energy astronomy missions observing in the
extreme-ultraviolet (EUV), X-ray, and gamma-ray bands, but also 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
- News Article: Pulsar's Unusual Behavior May Help Scientists Understand Their Fundamental Structure (30 Jun 2015)
Using data from Swift and RXTE, a team led by Frank Marshall of
NASA/GSFC observed that the pulsar B0540-69 radically changed the rate at
which its rotation rate slowed after 12 years of a steady decline. There is
not enough data yet to classify the pulsar as intermittent, but the article
notes that the behavior of this object may help solve the fundamental
questions about what is inside them and why they shine at all.
- Press Release: NASA Simulation Suggests Black Holes May Make Ideal Dark Matter Labs (28 Jun 2015)
A new computer
simulation by Jeremy Schnittman of NASA/GSFC shows that
dark matter particles colliding in the extreme gravity of a black hole can
produce strong, potentially observable gamma rays. Detecting this emission
would provide a new tool for understanding both black holes and the nature
of dark matter, the elusive substance accounting for most of the mass of the
- Stage-I Selections for the Fermi Cycle-8 GI Program Completed (27 Jun 2015)
The stage-I selections for the Fermi Cycle-8 Guest Investigator
Program have now been completed. The list is available here.
The selection letters and peer evaluations will be distributed in the near
- Fermi LAT Pass 8 data now available (25 Jun 2015)
Fermi LAT Pass 8 data is now available from the Fermi Science Support Center's LAT data servers. The Pass 8 LAT data includes a number of improvements over the reprocessed Pass 7 data. Improvements include a better PSF, improved energy measurement, and increased acceptance across the whole energy band. As of the Pass 8 release date (June 24, 2015), reprocessed Pass 7 data is no longer available from the LAT data servers.
Details can be found here.
- Fermi Science Analysis Environment Updated for LAT Pass 8 Data (25 Jun 2015)
The FSSC is pleased to announce the availability of a new version of the Fermi Science Tools, v10r0p5, released on June 24, 2015. This version includes support for pass 8 processed data and must be used in order to analyze pass 8 data.
Details and software download can be found here.
- NuSTAR CALDB Update (22 Jun 2015)
The NuSTAR CALibration DataBase was updated on June 22, 2015 (CALDB version 20150612). This updates the NuSTAR clock correction file to version 49 (good through June 12, 2015).
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