Space News: Two years ago, astronomers watched in bewilderment as the corona of a supermassive black hole quickly disappeared from view, only to reappear months later. New research suggests that the strange event was caused by a runaway star.
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| Scientists saw a black hole corona disappear | Space news 2020 | NASA |
Space News - The remnants of a runaway star.
Because black holes can't be studied directly, scientists often observe their eating habits to learn what these giants are doing. So, when a black hole suddenly stops eating gas altogether - and then suddenly starts eating again, and is hungrier than ever.What does this mean?
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| Space news | typical feeding black hole and a briefly dimmed black hole. |
- The first clues, of which there was something, came from observations made by two large survey programs that scan the skies.
- Those early glimpses prompted scientists to recruit some X-ray observatories to get a better idea of what was happening in that patch of sky.
Video: The corona of the black hole disappears during an event that has never been observed before.
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| The corona of the black hole disappears during an event that has never been observed before. (Video - 2020). |
| Title 75 characters | Black Hole’s Corona Disappears in An Event Never Witnessed Before - YouTube |
| Description 160 characters | Now you see it, now you don’t. Scientists saw a black hole corona totally disappear, only to find it brighten again later. They say it was so strange,... |
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Reference and more sources.
http://iopscience.iop.org/article/10.3847/2041-8213/ab91a1
The Destruction and Recreation of the X-Ray Corona in a Changing-look Active Galactic Nucleus
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| Study results show that changing-look events can be associated with dramatic and rapid transformations of the innermost regions of accreting supermassive black holes. |
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| Title 87 characters | The mystery of a black hole's disappearing (and reappearing) meal may be solved | Space |
| Description 124 characters | Scientists think they have an explanation for why a black hole corona suddenly disappeared, then gradually brightened again. |
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| The mystery of a black hole's disappearing and reappearing. | Space news, 2020. |