Sat Mar 23, 2024 11:33 pm by globalturbo
https://youtu.be/0NUtUFInDyg
nemesis maturity
Published on Feb 17, 2019
A sleeping black hole in the heart of a globular cluster discovered. Astronomers using MUSE on ESO's Very Large Telescope spotted a star behaving very oddly in a huge star cluster. This star is being flung forwards and backwards at hundreds of thousands of kilometres per hour. It's orbiting an invisible object with over four times the mass of the Sun - a hiding black hole. Black holes are usually detected from the surrounding very bright material intercacting with them, but this black hole is invisible - only the peculiar motion of the orbiting star gives its location away. The discovery suggests there may be many more black holes lurking in globular clusters than expected and MUSE provides the best way to find them. Globular star clusters are huge spheres of tens of thousands of stars that orbit most galaxies. They are among the oldest known stellar systems in the Universe and date back to near the beginning of galaxy growth and evolution. More than 150 are currently known to belong to the Milky Way. The relationship between black holes and globular clusters is an important but mysterious one. Because of their large masses and great ages, these clusters are thought to have produced a large number of stellar-mass black holes — created as massive stars within them exploded and collapsed over the long lifetime of the cluster. ESO Read more here: http://www.eso.org/public/news/eso1802/
