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- Q15915980 subject Q7009279.
- Q15915980 subject Q7163702.
- Q15915980 subject Q7282341.
- Q15915980 subject Q7476737.
- Q15915980 subject Q8803757.
- Q15915980 abstract "RX J1131-1231 is a distant, supermassive-black-hole-containing quasar located about 6 billion light years from Earth in the constellation Crater.In 2014, astronomers found that the X-rays being emitted are coming from a region inside the accretion disk located about three times the radius of the event horizon. This implies that the black hole must be spinning incredibly fast to allow the disk to survive at such a small radius. The measurement of the black hole's rotation is the first time astronomers have been able to directly measure the rotational speed of any black hole.This determination was made by a team led by Rubens Reis of the University of Michigan using NASA's Chandra X-ray Observatory and the European Space Agency's XMM-Newton telescopes. The team observed the X-rays generated in the innermost regions of the disk circling and feeding the black hole that powers the quasar. By measuring the radius of the disk, the astronomers were able to calculate the black hole's rotational speed, which was almost half the speed of light. The rapid spin of the quasar indicates that the black hole is being fed by a vast supply of gas and dust.However, the measurements would not have been possible without a rare alignment of the quasar and a giant elliptical galaxy (which is itself part of a cluster of other galaxies in line with the quasar) which lies between Earth and RX J1131-1231. This line-up provided a quadruple gravitational lens which magnified the light coming from the quasar. The strong gravitational lensing effect associated with J1131-1231 has also produced measured time delays; that is, in one image the lensed object will be observed before the other image.".
- Q15915980 thumbnail RX_J1131.jpg?width=300.
- Q15915980 wikiPageWikiLink Q181741.
- Q15915980 wikiPageWikiLink Q184348.
- Q15915980 wikiPageWikiLink Q185243.
- Q15915980 wikiPageWikiLink Q230492.
- Q15915980 wikiPageWikiLink Q23548.
- Q15915980 wikiPageWikiLink Q237604.
- Q15915980 wikiPageWikiLink Q2703.
- Q15915980 wikiPageWikiLink Q34777.
- Q15915980 wikiPageWikiLink Q40392.
- Q15915980 wikiPageWikiLink Q42262.
- Q15915980 wikiPageWikiLink Q49002.
- Q15915980 wikiPageWikiLink Q531.
- Q15915980 wikiPageWikiLink Q693861.
- Q15915980 wikiPageWikiLink Q7009279.
- Q15915980 wikiPageWikiLink Q7163702.
- Q15915980 wikiPageWikiLink Q7282341.
- Q15915980 wikiPageWikiLink Q7476737.
- Q15915980 wikiPageWikiLink Q83373.
- Q15915980 wikiPageWikiLink Q8803757.
- Q15915980 wikiPageWikiLink Q922419.
- Q15915980 wikiPageWikiLink Q9282.
- Q15915980 comment "RX J1131-1231 is a distant, supermassive-black-hole-containing quasar located about 6 billion light years from Earth in the constellation Crater.In 2014, astronomers found that the X-rays being emitted are coming from a region inside the accretion disk located about three times the radius of the event horizon. This implies that the black hole must be spinning incredibly fast to allow the disk to survive at such a small radius.".
- Q15915980 label "RX J1131-1231".
- Q15915980 depiction RX_J1131.jpg.