Tag: holes
Gravitational waves: the origin of the enigmatic black holes of Ligo and Virgo becomes clearer
Many mergers detected by Ligo and Virgo involve black holes whose masses exceed those of stellar black holes betrayed by X-ray emissions. Scenarios have been proposed to account for the…
40 billion billion stellar black holes in the observable Universe!
We don’t really know how far the Universe extends in space but we know how to estimate the size of the volume of what is called the observable Universe. A…
The number of black holes in the observable Universe would be gigantic!
We don’t really know how far the Universe extends in space but we know how to estimate the size of the volume of what is called the observable Universe. A…
Webb Space Telescope May Discover First Stars Formed Around Primal Black Holes
Black holes of various masses may have formed during the first second of the Big Bang and ultimately ended up being the source of dark matter. In a new scenario,…
A pair of supermassive black holes are said to have carved out giant cavities in a cluster of galaxies
Chandra’s x-ray observations in space and radio observations from Karl G. Jansky Very Large Array (VLA) and EVN on Earth show huge cavities carved into the plasma at the center…
Closest pair of supermassive black holes known to date
Supermassive black holes are everywhere in the observable cosmos. They are sometimes found in pairs in a galaxy, to the point of forming a binary supermassive black hole. The closest…
Astronomers have tracked down closest pair of supermassive black holes known to us
Supermassive black holes are everywhere in the observable cosmos. They are sometimes found in pairs in a galaxy, to the point of forming a binary supermassive black hole. The closest…