Computer Science
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410.1213p&link_type=abstract
The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 1213-1217 (1997).
Computer Science
Pulsars, Gamma-Ray Sources, Gamma-Ray Bursts, Gamma-Ray
Scientific paper
Here we investigate to what extent unresolved γ-ray pulsars contribute to the galactic diffuse emission, and further whether unresolved γ-ray pulsars can be made responsible for the excess of diffuse galactic emission above 1 GeV which has been observed by EGRET. Our analysis is based only on the properties of the six pulsars which have been identified in the EGRET data, and is independent of choice of a pulsar emission model. We find that pulsars contribute very little to the diffuse emission at lower energies, whereas above 1 GeV they can account for 25% of the observed intensity in selected regions for a reasonable number of directly observable γ-ray pulsars (~12). While the excess above 1 GeV γ-ray energy is observed at least up to six or eight degrees off the plane, the pulsar contribution would be negligible there. Thus pulsars do significantly contribute to the diffuse galactic γ-ray emission above 1 GeV, but they can not be made responsible for all the discrepancy between observed intensity and model predictions in this energy range.
Hunter Stan D.
Jones Barbara
Kanbach Gottfried
Pohl Mario
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