期刊
SCIENCE
卷 333, 期 6039, 页码 203-206出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1207150
关键词
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资金
- Department of Astrophysical Sciences at Princeton University
- NASA [PF9-00065, NAS8-03060, NNX10A057G, NNH07ZDA001-GLAST]
- NASA/Swift [NNX10AI21G]
- NSF [AST-0908886]
- Consejo Nacional de Ciencia y Tecnologia [83254]
- [NASA/NNX10AF93G]
- [NASA/NNX10AI28G]
- [NSG/AST-100991]
- Direct For Mathematical & Physical Scien [0908886] Funding Source: National Science Foundation
- Division Of Astronomical Sciences [0908886] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1009421] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/H001972/1, ST/F002599/1, ST/H002235/1, PP/E002064/1, ST/I001719/1, ST/I005773/1] Funding Source: researchfish
- STFC [ST/H001972/1, ST/F002599/1, ST/I005773/1, ST/H002235/1, PP/E002064/1, ST/I001719/1] Funding Source: UKRI
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.
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