On June 15, astronauts obtained a stream of X-rays emitted by the black hole that seemed to indicate that the black hole had "woken up" after 26 years of "oversleeping".
Black holes 'wake up' after decades of oversleeping
According to the US Aeronautics Agency (NASA), the Swift telescope on June 15 captured a new bright object that appeared in the sky. At first, scientists did not know what object it was. In the end, they discovered that it was light emitted from a powerful halo around a black hole of star mass.
The black hole is like a gluttonous creature. It grows, devouring every fragment of nearby stars. Everything near it is attracted by the powerful gravity of the black hole, including light. Therefore, it is difficult to take pictures and observe black holes.
This black hole stays still for 26 years, wakes up and emits a series of X-ray beams. It absorbs gas and dust from a nearby star, along with many other matter, accreting the disk around the black hole. , John Nousek, Penn University, USA, Swift project director said.
A black hole is an area where gravitational fields prevent everything
"When it accumulates enough material, it will converge qualifying to create a similar explosion of hydrogen bombs," Nousek said. " Hydrogen dissipates under pressure and heat, creating a bright explosion like a new star is forming. " With tremendous explosions, it will blow away all material lying still near the black hole.
According to the BBC, observing the explosion helps scientists learn how black holes change over time. This black hole only works for a short time and then sleeps again, scientists don't know when it will wake up again.
Previously, black holes of V404 Cygni erupted. However, when astronauts witnessed black holes erupting more than 77 years ago, in 1938, they did not have as many devices as they do now.
The black hole erupted again in 1956 and the next took place in 1989. Although in 1989, the time when the black hole V404 Cygni erupted had many devices, it was not studied as well as the acting event. out this year.
These eruptions usually last only a few weeks to a few months, so astronauts have used a total of nine devices on space and space to study black holes in wave lengths. , from very low energy such as radio waves to high energy like gamma rays, before time runs out.
