A Variability and Localization Study of the Galactic Center Gamma-Ray Source 3EG J1746-2851

Details A Variability and Localization Study of the Galactic Center Gamma-Ray Source 3EG J1746-2851 A Variability and Localization Study of the Galactic Center Gamma-Ray Source 3EG J1746-2851

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...626..174p&link_type=abstract

The Astrophysical Journal, Volume 626, Issue 1, pp. 174-182.

Astronomy and Astrophysics

Astronomy

11

Galaxy: Center, Gamma Rays: Observations

Scientific paper

I have studied the variability properties and localization of 3EG J1746-2851 based on EGRET data of the observing periods 1-4. Using corrections for known systematic problems and performing various consistency checks, I find no evidence of variability with an amplitude exceeding 30% with the possible exception of viewing period 429, for which a strong soft excess is observed. Source 3EG J1746-2851 is displaced from the exact Galactic center toward positive Galactic longitudes. Sgr A*, the center of Sgr A East, the pulsar J1747-2958, and the TeV γ-ray source observed with HESS seem to be excluded as possible counterparts at the >95% level.

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