Quasar SDSS J1011+5442 - a changing-look quasar
Автор: SciNews
Загружено: 2016-01-10
Просмотров: 1600
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In 2003, astronomers observed the quasar SDSS J1011+5442 (SDSS J101152.98+544206.4), a black hole some 50 million times more massive than the Sun, gorging on superheated gas at the center of its galaxy. In 2015, new measurements revealed a huge decrease in the spectrum of the quasar, with hydrogen-alpha emission dropping by a factor of 50. It seems the black hole has swallowed all the gas in its vicinity and the quasar looks like a normal galaxy now.
Credit:
Dana Berry/SkyWorks Digital, Inc.
Now you see it, now you don't: the disappearing central engine of the quasar J1011+5442
Jessie C. Runnoe, Sabrina Cales, John J. Ruan, Michael Eracleous, Scott F. Anderson, Yue Shen, Paul J. Green, Eric Morganson, Stephanie LaMassa, Jenny E. Greene, Tom Dwelly, Donald P. Schneider, Andrea Merloni, Antonis Georgakakis and A. Roman-Lopes
MNRAS (January 11, 2016) doi: 10.1093/mnras/stv2385
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