The corona which is at the center of a black hole suddenly vanished and then formed again, fundamentally making the black hole off and then a re-starting.
Black holes, which are supermassive, are recognized to be some of the strange objects found in the universe. The events inside the horizons which pass their coronas full of energy seem to shut down the laws of physics.
But in recent times, astronomers have observed something strange occurring to a black hole which is impossible by the outlandish standards of the object itself.
The extremely hot, ultra-bright corona at the centre of a black hole (1ES 1927+654) which is about 100 million light-years away suddenly vanished and formed again, fundamentally making the black hole off and then restarting, as if it had a defect. This is the very first instance of such an incident ever recorded.
Claudio Ricci, leading author of the study, remarked,
“It was so strange that at first we thought maybe there was something wrong with the data. When we saw it was real, it was very exciting. But we also had no idea what we were dealing with; no one we talked to had seen anything like this.”
The astronomers who were on the study of this incident with Ricci believe a rogue star may have caused a massive “tidal disruption,” and may have appeared like “a pebble tossed into a gearbox,” which had been later observed the entire corona of highly charged particles to make the path to come collapsing into the black hole.
As an effect of the phenomena, brightness of the black hole is being decreased by a factor of 10,000 in under a year.
“We expect that luminosity changes this big should vary on timescales of many thousands to millions of years,” Erin Kara, assistant professor of physics at MIT and co-lead on the study, explained. “But in this object, we saw it change by 10,000 over a year, and it even changed by a factor of 100 in eight hours, which is just totally unheard of and really mind-boggling.”
According to the aspects of the scientists on Earth, the black hole appears to consume itself, close up shop, and vanish from radar, which makes it corroborated by multiple telescopes and observed in X-ray, optical and ultraviolet wave bands. Yet it wasn’t the end of it. As the singularity of the black hole is still existing, it has started to gobble up the particles again by spinning up a new accretion disk, by re-generating its old luminosity in only months.
This peculiar phenomena was initially discovered by the MIT team in March 2018, when they reported an active galactic nucleus (AGN) using ASSASSIN or the All-Sky Automated Survey for Supernovae. This team has also observed the black hole with the assistance of NASA’s NICER, an x-ray telescope which had been mounted on the International Space Station.
“This seems to be the first time we’ve ever seen a corona first of all disappear, but then also rebuild itself, and we’re watching this in real-time,” recalls Kara. “This will be really important to understanding how a black hole’s corona is heated and powered in the first place.”
According to the belief of Kara and co-authors, this unexpected “glitch” could be an effect of the collapse of the accretion disk’s magnetic field lines. Their observation is recorded in Astrophysical Journal Letters.
Source of the information: The Mind Unleashed