出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Here we report the discovery of the fast g -ray variability of the blazar OJ 287. This blazar is known to host a binary supermassive black hole in its center. The observed variability occures on the time scale Tvar .3−10 hours, which is significantly shorter than the light crossing time of the primary black hole in the system. This indicates that the g -ray emission is coming from the jet of the secondary, less massive black hole in the system (1.3×108 M vs. 1.8×1010 M ). Detection of the g -rays with energies higher than 10 GeV allows us to conclude, that the Doppler factor of the jet is larger than 4. The study of the orbital modulation of emission of OJ 287 may make it be a unique laboratory for the study of the mechanism(s) of the formation of jets of black holes.
