Optical identification of EGRET source counterparts

Details Optical identification of EGRET source counterparts Optical identification of EGRET source counterparts

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410.1267c&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 1267-1270 (1997).

Computer Science

Gamma-Ray Sources, Gamma-Ray Bursts, Gamma-Ray, X-Ray, Black Holes, Visible

Scientific paper

As part of a program for searching for Geminga-like candidates through the combination of γ-ray, X-ray and optical data, we have engaged ourselves in optical observations of selected ROSAT point sources. The strategy followed has been to survey the error boxes of the best ROSAT candidates in search of optical counterparts. If an optical source is present, as in the case of 2EG J2020+4026, an optical spectrum is acquired in order to ascribe the likelihood of the star been the X-ray and γ-ray source. More interestingly, in the case of the EGRET source 2EG J0008+73, inside the CTA 1 SNR, no optical counterpart was found and the limits imposed restrict the nature of the γ-ray source. In both cases, the most likely interpretation is that the γ-ray source is a Geminga-type object.

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