![]() | ![]() |
Astron. Astrophys. 331, 726-736 (1998) AcknowledgementsI wish to thank warmly Michel Cassé for stimulating discussions. I am deeply indebted also to Reuven Ramaty, Andrei Bykov and Don Ellison for their pertinent comments on the details of the model.
© European Southern Observatory (ESO) 1998 Online publication: February 16, 1998 ![]() |