Two studies M87 * Pictures taken by members of the collaboration Gave us the most convincing arguments for the existence of black holes . There are less reasons for suspicion behind the active centers Hide from From one million to several billion Sun light.
However, we are particularly aware of it because of the pictures taken with itHubble says that there are collisions between large galaxies, and that there is every reason to believe that all large galaxies have very large black holes. Even the calculations Rather than theoretical, for example, based on genre Payable attraction a Of Another in one galaxy When it passes, show it In two large galaxies, their largest black holes end in sediment, so that in the center of the resulting galaxy, one can observe galaxies with two massive black holes at their center.
Jean-Pierre Luminet, CNRS’s research director, and Franசois Combs, a professor at the College of France, tell us about black holes. © Hugot Foundation of the College of France
A metronome blazer
As has been proven by the team, it has been for some time And that On top of that PKS 2131-021 contains about 9 billion Of . Remember that step The blazars are simply there So a lot of spinning supermassive black holes accumulate Emits terrible waves for this reason Jets of matter are accidentally directed in or near our direction.In a publication that can be read
Explained in a press release from Jet Propulsion Laboratory Of And Keep track of Owens Valley in Northern California. The Blaser had been studying it for 13 years as part of a general study of behavior. But this particular blazer revealed a strange behavior: it Shows regular ups and downs that can be guessed like the ticking of a clock.PKS 2131-021 is one of 1,800 blazers
Presentation of the invention made by Blazer PKS 2131-021. It is a black hole surrounded by an agglomeration disk in which the relative jets of matter oscillate because Blazer forms a pair with another black hole. © Caltech
Black hole connection in 10,000 years
This is Roger Blandford, And above all he is an expert in black hole physics, almost 45 years ago with his colleague Roman Snaje he proposed one of the best models to illustrate quasar jets, which was able to understand what was going on in the case of PKS 2131-021. A binary black hole. It was caused almost entirely by sinusoidal oscillations in the brightness of the blazer He dances With his companion.
We are not alone in the presence of a definitive second established example of the existence of a binary supermassive black hole in the heart of a galaxy (), But it broke a record, because integrated studies at the end of 45 years of observations of PKS 2131-021 in various ways show that we were in a very short period of time. For this kind of star, only about two years. Then the diameter of the orbit will be 10 to 100 times smaller than OJ 287.
Both stars already have significant levels to lose. About 100 million years are thought to have passed between the beginning of the fusion of two galaxies and the final fusion of their largest black holes. In the case of PKS 2131-021, it is estimated that each of the smaller bodies involved contains hundreds of millions of solar masses. Let’s remember that There is only a little over 4 million.This, as is the case Diagnosed with Ligo and , Lead them to unite. But it will not be 10,000 years from now. So it is not possible to attend the event with humanity
Franோois Combs, a professor at the College of France, talks about gigantic black holes. © Ecole Normale Supérieure, PSL