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|Title:||A possible relativistic jetted outburst from a massive black hole fed by a tidally disrupted star.|
De Colle F
van der Horst AJ
|Citation:||SCIENCE, 2011, 333 (6039), pp. 203-206|
|Abstract:||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.|
|Appears in Collections:||Published Articles, Dept. of Physics and Astronomy|
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