Could the unidentified EGRET sources in the Gould Belt be of pulsar origin?

Details Could the unidentified EGRET sources in the Gould Belt be of pulsar origin? Could the unidentified EGRET sources in the Gould Belt be of pulsar origin?

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..558..767z&link_type=abstract

HIGH ENERGY GAMMA-RAY ASTRONOMY: International Symposium. AIP Conference Proceedings, Volume 558, pp. 767-770 (2001).

Astronomy and Astrophysics

Astronomy

Gamma-Ray Sources, Gamma-Ray Bursts, Pulsars

Scientific paper

We explore the possibility, within the polar cap model, that at least some of the recently identified new population of EGRET sources in the Gould Belt sources are γ-ray pulsars, viewed at large angles to the magnetic axis, such that the line-of-sight misses both the bright gamma-ray double cone and the radio beam. We estimate that the detectability of such off-beam gamma-ray sources is about a factor of 4-5 times higher than that of the on-beam sources. The off-beam γ-ray pulsars also have a faint, soft nature, which is consistent with the observed properties of the Gould Belt sources. We conclude that at least some of the middle latitude sources might be such off-beam gamma-ray pulsars if they are indeed in the Gould Belt. .

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