ar X iv : a st ro - p h / 04 03 67 6 v 1 3 0 M ar 2 00 4 1 STUDY OF UNIDENTIFIED EGRET SOURCES WITH INTEGRAL : FIRST RESULTS AND FUTURE PROSPECTS

The primary objective of the study of unidentified EGRET sources with INTEGRAL is to locate with a few arcminute accuracy the hard X-ray / soft γ-ray counterparts within the EGRET error circle or to determine upper limits on their emission in the INTEGRAL energy range. The INTEGRAL Galactic Plane Scan (GPS) and Galactic Centre Deep Exposure (GCDE) data have been analysed and cross–correlated with the EGRET 3 rd Catalogue to search for counterparts of EGRET sources. The IBIS detection of a source within the EGRET error circle of 3EG J1736 − 2908 is presented and its possible identification with the active galaxy GRS 1734 − 292 is discussed. Finally, preliminary results on the cross-correlation between EGRET unidentified sources and the first data from the IBIS survey of the Galactic Centre are presented.