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 106 to 107 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.
Original language | English (US) |
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Pages (from-to) | 203-206 |
Number of pages | 4 |
Journal | Science |
Volume | 333 |
Issue number | 6039 |
DOIs | |
State | Published - Jul 8 2011 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General