During the eruption of the black hole seemed kinda “light echo”

We tend to think that black holes consume all the matter around you — but in fact they are not only not suck anything, but you can throw out almost as much as they get. Sometimes they seem absolutely crazy. Not long ago, astronomers noticed a black hole, located at a distance of about 10,000 light years from Earth, which belched out a huge burst of x-ray light. Measurement of this explosion gave scientists one of the clearest pictures of what happens when black holes erupt with energy.

Eruptions of black holes

“One of our biggest issues is how we make the transition from the process of material flowing into a black hole in the process of escaping?”, the astronomer says Erin Kara from Universitata of Maryland in College Park, lead author of an article published on this subject in Nature. “We know that this is happening, but what exactly — no”.

The outbreak began March 11, 2018 and quickly turned a black hole that was completely invisible to telescopes, one of the brightest objects (from the point of view of the x-ray spectrum) in the sky. This object MAXI J1820+070 was first detected by the MAXI experiment on the International space station. The other Observatory at the station, exploring the internal structure of neutron stars (NICER), watched the flash daily over the next few months.

Astronomers not only measured the extraordinary brightness of the black hole during this time and found a “light echo” — time delays between x-rays coming from two different regions around the black hole. Some light emerges directly from the region, called the corona”, it consists of electrons and other charged particles that are close to the black hole. Away and the crown is perpendicular to the accretion disc — a large gas plane, whirling around the black hole and falling into it. The rest of the light exits the crown and bounces off the disk, and then enters the detectors NICER. Watching the eruption, NICER found that the time between the echo became shorter and shorter, therefore the distance between the disk and the crown reduced. Scientists had evidence that the boundaries of the disk has not changed, so they concluded that the crown itself had to be reduced and hence light is not needed to move so far to reach the disk.

Look at this GIF.

“This is the most precise to date the discovery of these light echoes from gas falling into a black hole of stellar mass in our own galaxy,” says Dan Wilkins, an astrophysicist from Stanford University, was not involved in the study. “The ability to detect the change of the time delays between the echoes during the flare means that we can begin to study what happens around a black hole”.

Zeroing of the crown can be particularly helpful because scientists believe that in this region are born powerful particle beams and light — relativistic jets. These jets are moving at speeds close to light and you can see them from anywhere in the Universe, emerging from a black hole.

Astronomers hope that a NICER, which was launched in June of 2017 and other new Observatory will be watching the other bursts in the future and will help to fill in the missing details of the eruption of black holes.

It seems we now have the opportunity to get acquainted with them. Agree? Tell us in our chat in Telegram.

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