2017/04/28 by LAT Collaboration
Physics and Astronomy · #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #astro-ph.HE
paper · pdf · doi:10.48550/arxiv.1705.00009
Corresponding Authors: Mattia Di Mauro, Eric Charles and Matthew Wood. 15 pages, 14 figures, 2 tables. This version does not include the maximum likelihood analysis section, that was present in the previous version of the paper, since an error was present in that part of the analysis. It includes a new section with a study of the systematics in the search for point sources
arxiv created 2017/10/29 · arxiv updated 2017/10/31
An excess of γ-ray emission from the Galactic Center (GC) region with respect to predictions based on a variety of interstellar emission models and γ-ray source catalogs has been found by many groups using data from the \it Fermi Large Area Telescope (LAT). Several interpretations of this excess have been invoked. In this paper we search for members of an unresolved population of γ-ray pulsars located in the inner Galaxy that are predicted by the interpretation of the GC excess as being due to a population of such sources. We use cataloged LAT sources to derive criteria that efficiently select pulsars with very small contamination from blazars. We search for point sources in the inner 40^∘×40^∘ region of the Galaxy, derive a list of approximately 400 sources, and apply pulsar selection criteria to extract pulsar candidates among our source list. We performed the entire data analysis chain with two different interstellar emission models (IEMs), and found a total of 135 pulsar candidates, of which 66 were selected with both IEMs.