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Astron. Astrophys. 326, 51-58 (1997) AcknowledgementsWe thank Markus Böttcher and Reinhard Schlickeiser for intensive discussions. The present work uses standard viewing period analysis products of the EGRET group at MPE, Garching. The EGRET Team gratefully acknowledges support from the following: Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie (BMBF), Grant 50 QV 9095 (MPE); NASA Cooperative Agreement NCC 5-93 (HSC); NASA Cooperative Agreement NCC 5-95 (SU); and NASA Contract NAS5-96051 (NGC). ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1997 Online publication: April 20, 1998 ![]() |