Other
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21546904f&link_type=abstract
American Astronomical Society, AAS Meeting #215, #469.04; Bulletin of the American Astronomical Society, Vol. 42, p.512
Other
Scientific paper
In its first year, the Large Area Telescope (LAT) on the the Fermi Gamma-ray Space Telescope has dramatically improved our knowledge of the gamma-ray sky. As a result of the LAT's increased sensitivity and angular resolution over earlier-generation detectors, many previously detected gamma-ray sources (from EGRET and other instruments) have now been identified with objects that belong to known classes of gamma-ray emitters. Such improvements have also significantly expanded the number of detected sources that do not appear to have an association with any known gamma-ray-emitting object type. We use the spectral, spatial, and temporal properties reported in the first Fermi-LAT Source Catalog (1FGL) for these unassociated sources, in comparison with LAT sources that have likely associations or are firmly identified, to provide insight into the underlying population(s) that these detections may represent.
Fermi Large Area Telescope Collaboration
Ferrara Elizabeth C.
Grenier Isabelle A.
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