Key Takeaways
1. Supermassive black holes have strong gravitational pulls that can rip apart stars and create accretion disks.
2. The black hole AT2018hyz is unusual because its brightness has continually increased since a star vanished in 2018.
3. By 2019, AT2018hyz became 50 times brighter, rivaling gamma-ray bursts, making it one of the brightest cosmic events recorded.
4. This prolonged brightness challenges existing astronomical theories and poses questions about the nature of such events.
5. Ongoing research is necessary to understand the unique behavior of AT2018hyz and its implications for our understanding of the universe.
Supermassive black holes are incredibly strong celestial bodies that can pull in stars with their intense gravitational pull. However, the aftermath for these stars is often swift and dramatic, as their material gets ripped apart and creates an accretion disk around the black hole. Although this kind of event is not rare in the cosmos, astronomers have encountered a black hole displaying unexpected behavior.
An Unusual Discovery
This black hole, known as AT2018hyz, has captured the attention of astronomers and scientists alike because its brightness has been rising since a star vanished in 2018. Typically, when such a phenomenon occurs, brightness spikes for a limited time before it begins to fade. Yet, in this instance, the brightness continued to increase into 2019.
A Bright Phenomenon
Recent radio observations reveal that it is currently 50 times brighter than it was in 2019, with energy output that rivals gamma-ray bursts. This makes it one of the brightest events seen in the universe, which has left researchers like Yvette Cendes, an astrophysicist from the University of Oregon and lead author of the study, quite astonished. She noted,
“This is really unusual. I’d be hard-pressed to think of anything rising like this over such a long period of time. If you have an explosion, why would you expect there to be something years after the explosion happened when you didn’t see something before?”
Ongoing Mysteries
Astronomers are still grappling with this question, as this occurrence is unique in its extended duration and it challenges their existing theories about the universe. Consequently, more research is essential to unravel the mysteries surrounding its unusual behavior.
Source:
Link