Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21914919f&link_type=abstract
American Astronomical Society, AAS Meeting #219, #149.19
Astronomy and Astrophysics
Astronomy
Scientific paper
A significant fraction of gamma-ray sources detected by the Fermi Large Area Telescope are not associated with any known gamma-ray emitting object. These sources represent discovery space for new source classes, or new members of existing source classes. We discuss the spatial, spectral and temporal characteristics of the unassociated sources in the second Fermi-LAT source catalog (2FGL). We compare these distributions with the characteristics of the primary source classes (extragalactic vs. Galactic sources) to provide likely source classifications, and compare our results against the total predicted numbers of each source population. We also review the 1FGL unassociated source population, and discuss how changes in the catalog analysis have affected the resulting unassociated source sample.
Ferrara Elizabeth C.
LAT Collaboration
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