A Possible Relativistic Jetted Outburst from a Massive Black Hole Fed by a Tidally Disrupted Star

作者：Bloom Joshua S^*; Giannios Dimitrios; Metzger Brian D; Cenko S Bradley; Perley Daniel A; Butler Nathaniel R; Tanvir Nial R; Levan Andrew J; Brien Paul T O'; Strubbe Linda E; De Colle Fabio; Ramirez Ruiz Enrico; Lee William H; Nayakshin Sergei; Quataert Eliot; King Andrew R; Cucchiara Antonino; Guillochon James; Bower Geoffrey C; Fruchter Andrew S; Morgan Adam N; van der Horst Alexander J

来源：Science, 2011, 333(6039): 203-206.

DOI：10.1126/science.1207150

Gas accretion onto some massive black holes (MBHs) at the centers of galaxies actively powers luminous emission, but most MBHs are considered dormant. Occasionally, a star passing too near an MBH is torn apart by gravitational forces, leading to a bright tidal disruption flare (TDF). Although the high-energy transient Sw 1644+57 initially displayed none of the theoretically anticipated (nor previously observed) TDF characteristics, we show that observations suggest a sudden accretion event onto a central MBH of mass about 10(6) to 10(7) solar masses. There is evidence for a mildly relativistic outflow, jet collimation, and a spectrum characterized by synchrotron and inverse Compton processes; this leads to a natural analogy of Sw 1644+57 to a temporary smaller-scale blazar.

• 出版日期2011-7-8