Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-02-26
Astronomy and Astrophysics
Astrophysics
LaTeX, 6 pages, 2 Postscript figures. To appear in the Proceedings of the Symposium `New Visions of the X-ray Universe in the
Scientific paper
The limited angular resolution of gamma-ray telescopes prevents the straight identification of the majority of the sources detected so far. While the only certified galactic gamma-ray emitters are associated with pulsars, more than 90% of the nearly 100 low latitude sources detected by EGRET on the GRO lack an identification. The best identification strategy devised over the years relies on the use of X-ray and optical data to single out possible counterparts, rating them on the basis of their extreme F_x/F_opt. Here we describe our multiwavelength programme based on the EPIC mapping of selected EGRET sources complemented by the optical coverage of the same fields obtained through the Wide Field Imager (WFI) of the ESO 2.2 m telescope. The field of view of the WFI, comparable to that of EPIC, will allow to directly cross-correlate X and optical data speeding up significantly the selection of interesting candidates worth follow-up optical (and X-ray) studies.
Bignami Giovanni F.
Caraveo Patricia A.
de Luca Andrea
Hartman Robert
Hatziminaoglou Evanthia
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