1201.3585 (Colleen A. Wilson-Hodge et al.)

Three years of Fermi GBM Earth Occultation Monitoring: Observations of Hard X-ray/Soft Gamma-Ray Sources    [PDF]

Colleen A. Wilson-Hodge, Gary L. Case, Michael L. Cherry, James Rodi, Ascension Camero-Arranz, Peter Jenke, Vandiver Chaplin, Elif Beklen, Mark Finger, Narayan Bhat, Michael S. Briggs, Valerie Connaughton, Jochen Greiner, R. Marc Kippen, Charles A. Meegan, William S. Paciesas, Robert Preece, Andreas von Kienlin

The Gamma ray Burst Monitor (GBM) on board Fermi has been providing continuous data to the astronomical community since 2008 August 12. In this paper we present the results of the analysis of the first three years of these continuous data using the Earth occultation technique to monitor a catalog of 209 sources. From this catalog, we detect 102 sources, including 41 low-mass X-ray binary/neutron star systems, 33 high-mass X-ray binary neutron star systems, 12 black hole binaries, 12 active galaxies, 2 other sources, plus the Crab Nebula, and the Sun. Nine of these sources are detected in the 100-300 keV band, including seven black-hole binaries, the active galaxy Cen A, and the Crab. The Crab and Cyg X-1 are also detected in the 300-500 keV band. GBM provides complementary data to other sky-monitors below 100 keV and is the only all-sky monitor above 100 keV. Up-to-date light curves for all of the catalog sources can be found at http://heastro.phys.lsu.edu/gbm/.

View original: http://arxiv.org/abs/1201.3585