Two years ago, astronomers discovered that a black hole in a galaxy called 1927-654, known as 1927-654, slowly devoured an ultraheated disk of gas — the so-called “corona” of a black hole — and gradually rebuilt another black hole, according tomedia CNET. Over the course of a few weeks, this has caused the black hole to be glowing by only one-tenth of its original light, and then more than 20 times brighter.
Scientists wonder what caused the event. A new study published Thursday in the Astrophysical Journal Of Letters suggests a new hypothesis — it could be the work of an out-of-control star. One possible explanation, according to the report, is that a “rogue” star is thought to be beating in a black hole, creating an “avalanche effect” of gravity that causes all adjacent matter to sink into the black hole, including the black hole’s “corona”.
A black hole’s corona is a bright feature of X-rays that emits flares that allow us to see its light millions of light-years away. And it is because of the fluctuations in this light that scientists have been able to come up with an explanation. “We just don’t usually see this change in accretion black holes,” Claudio Ritchie, lead author of the study and an associate professor at Diego Portares University in Chile, said in a NASA news release.
“It’s so strange that at first we thought maybe there was something wrong with the data. When we saw it was real, we were very excited. But we don’t know what we’re dealing with, and none of the people we talk to have seen anything like it. “Given the dramatic changes in luminosity over time, the cause of this phenomenon is entirely possible, so further monitoring is needed to give us more answers.”
“There are a lot of puzzles in this data set, ” said Irene Cara, a co-author of the new study and an assistant professor of physics at the Massachusetts Institute of Technology. “We think the stellar hypothesis is a good hypothesis, but I also think we’ll analyze this event for a long time.”