Astronomers have long known about rogue black holes? How long? Is this a new revelation about DM and BHs?Newly merged black holes might be so jarred by the experience that they go "rogue," careening into space on unexpected trajectories.
In fact, hundreds of these rogue black holes could exist in the Milky Way galaxy alone, according to a new study.
The research is just one of several new findings on black holes presented Wednesday at a meeting of the American Astronomical Society in Austin, Texas.
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Scientists at the presentation, for instance, offered up new explanations about odd x-ray sources coming from black holes.
They also found hints that dark matter may play an important role in the hot disks that form around companion-consuming black holes.
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Chronos said:'Hundreds' of rogue black holes in our galaxy? So where are they [Fermi thing]? I doubt we are at risk.
Philosophaie said:It is not uncommon for a star to implode and become a black hole. It happens all the time. Why not in our galaxy.
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Society lives by faith, and develops by science.
http://news.discovery.com/space/rogue-stars-non-constant-constants-holes-in-space-our-universe-is-rebelling.htmlA young undergraduate named Marianne Heida was just combing through the Chandra Source Catalog, when she noticed a supermassive black hole that appeared to be leaving its home galaxy at very high speed, despite its mass of well over 1 billion Suns.
Rogue black holes are black holes that have been ejected from their original galaxy or galactic nucleus due to various interactions and mergers with other galaxies. They do not orbit a central galaxy like most black holes do.
Scientists estimate that there could be hundreds of rogue black holes roaming the Milky Way galaxy. However, this number is just an estimate and could vary depending on future research and observations.
These rogue black holes do not have a significant effect on the Milky Way as a whole. However, if they happen to pass near another star, they can pull that star into their gravitational pull, potentially disrupting the orbits of other planets around that star.
Scientists are able to detect these rogue black holes through their interactions with other objects in space, such as stars and gas clouds. They can also use their gravitational lensing effect to observe the light from distant objects behind them.
There are a few candidates for rogue black holes in the Milky Way galaxy, but none have been confirmed yet. Further research and observations are needed to confirm their existence and determine their properties.