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- Literature - Links to literature
search engines and online versions of refereed journals and science
Swift CALDB Data updated (13 Jan 2018)
The Swift SC clock correction has been updated (CALDB update version 20180103).
NICER/SEXTANT proves pulsars can function as a celestial GPS (12 January 2018)
"NASA test proves pulsars can function as a celestial GPS", published in Nature, discusses how NICER/SEXTANT for the first time demonstrated in-space navigation using X-ray pulsars as a form of a Galactic Positioning System. This method will help spacecraft autonomously steer themselves through deep space. These results were featured in a
press conference at the 231st Meeting of the AAS, in Washington DC.
Preliminary Fermi LAT 8-year Point Source List Available (05 Jan 2018)
A preliminary Fermi LAT 8-year Point Source List (FL8Y), based on the first eight years of science data from the Fermi Gamma-ray Space Telescope mission and the 100 MeV-1 TeV range has been released by the Fermi project. The FL8Y source list has twice as much exposure as the 3FGL, and includes a number of analysis improvements, but does not use an updated model for Galactic diffuse gamma-ray emission. The FL8Y source list includes 5524 sources above 4-sigma significance, and includes source location regions and spectral properties.
General Catalog of Variable Stars, Version 5.1, March 2017 (03 Jan 2018)
The latest version of this catalog of 52,011 confirmed variable
stars (from Samus
et al. 2017, ARep, 61, 80) is now available in Browse and
XSPEC 12.9.1u Patch Released (02 Jan 2018)
Adds proper handling of gain fit parameters when stored and read back in with Xset.save and Xset.restore in PyXspec. Released Dec 27, 2017.
FERMI3FHL - Third Catalog of Hard Fermi-LAT Sources (3FHL) (21 Dec 2017)
This catalog (from Ajello
et al. 2017, ApJS, 232, 18)
contains 1,558 objects that have been characterized in the 10 GeV
to 2 TeV energy range by Fermi's Large Area Telescope (LAT) in the first 7
years of observations using the Pass 8 event-level analysis. The
sensitivity and angular resolution are improved by factors of 3 and 2 relative
to the previous LAT catalog at the same energies (1FHL). 3FHL is now available
in both Browse and
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