US EditionHubble pinpoints roaming massive black hole
- Astronomers used NASA's Hubble Space Telescope to locate a supermassive black hole devouring a star 600 million light-years away in a galaxy with two massive black holes.
- This event, called AT2024tvd, represents the first optically detected tidal disruption event occurring away from the center of its host galaxy, revealing a roaming black hole.
- Researchers observed a flare as bright as a supernova, with X-ray and radio signals from NASA’s Chandra Observatory and other telescopes confirming the black hole shredded a star and formed an accretion disk.
- The smaller black hole, about 1 million times the sun’s mass, lies 2,600 light-years from the galaxy’s center, which hosts a larger black hole weighing 100 million solar masses, and may eventually merge with it.
- This discovery supports theories predicting massive black holes outside galactic centers and suggests TDEs can identify such wandering black holes, potentially revealing a hidden population through future sky surveys.
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Quasars Don't Last Long. So How Do They Get So Massive?
One of the unanswered questions in astronomy is just how supermassive black holes grew so big, so quickly. A team of astronomers have tried to answer this question by searching for actively feeding supermassive black holes (aka quasars) as a way to measure how much material material they are actually accumulating. They studied nebulae near the quasars that light up with the quasar is releasing radiation and found that many of the more distant qu…
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