In recent years, astronomers have discovered mysterious delayed outbursts near black holes. This phenomenon, which still raises many questions, may contribute to the development of a new model for the central engine of black holes.
Scientists from Northwestern University are drawing attention to the immense power with which these jets can explode, impacting the evolution of galaxies. However, despite intensive research, we still do not know the exact causes of these delayed outbursts.
One significant discovery was the use of radio readings to understand these events. Black holes generate radio waves by expelling matter colliding with surrounding gas. This led to the discovery of delayed radio flashes that occurred months after the initial outbursts.
Additionally, an astronomer from the Harvard & Smithsonian Center for Astrophysics reported the detection of another delayed flash and a sudden increase in radio activity. Meanwhile, a doctoral student from Hebrew University, analyzing previous cases, discovered an X-ray flash accompanying radio emissions.
This phenomenon, known as Tidal Disruption Event (TDE), also occurs in X-ray binary systems, where black holes draw gas from paired stars. Shifting in the accretion disk of a black hole causes X-ray flashes in binary systems.
With the progress of research, we know that delayed TDEs in supermassive black holes result from spaghettification, the accumulation of gas around the black hole. The slow accumulation of gas causes the disk to become colder and thinner until it becomes weak enough to launch matter from the disk and collide with the surrounding gas, generating radio flashes.
Although our scientists continue to unravel the secrets of this fascinating field, further observations and research on delayed outbursts may provide us with more information about the evolution of black holes and galaxies.
FAQ:
1. What are delayed outbursts near black holes?
Delayed outbursts near black holes are a phenomenon where black holes generate radio waves as a result of matter being expelled and colliding with surrounding gas. However, these flashes occur months after the initial outbursts.
2. How did astronomers discover these delayed outbursts?
Astronomers used radio readings to understand these events. They discovered delayed radio flashes that occurred after black hole outbursts.
3. What is TDE?
TDE stands for “Tidal Disruption Event,” which is a phenomenon that also occurs in X-ray binary systems where black holes absorb gas from paired stars.
4. What are the causes of delayed X-ray flashes in binary systems?
Shifting in the accretion disk of a black hole causes X-ray flashes in binary systems.
5. How does the accumulation of gas around a black hole result in delayed TDEs in supermassive black holes?
The accumulation of gas around a black hole causes the disk to become colder and thinner. As a result, it becomes weak enough to launch matter from the disk, which then collides with the surrounding gas and generates radio flashes.
6. How can further research on delayed outbursts provide more information about the evolution of black holes and galaxies?
Further research and observations on delayed outbursts can provide us with more information about the evolution of black holes and galaxies, as well as a better understanding of this fascinating phenomenon.
Definitions:
– Black Holes: Astronomical objects with such strong gravity that nothing, not even light, can escape from their region known as the event horizon.
– Delayed Radio Flashes: Radio waves generated by black holes that occur months after the initial outbursts.
– X-ray Flashes: Various types of outbursts emitting X-ray radiation, often associated with accreting binary systems.
– Accretion Disk: The region surrounding a black hole or other gravitational object where accreting material falls towards that object.
– Galaxy Evolution: The process of changes that galaxies undergo, including their shape, structure, size, and composition.
Suggested Related Links:
– [Northwestern University](https://www.northwestern.edu/)
– [Harvard & Smithsonian Center for Astrophysics](https://www.cfa.harvard.edu/)
– [Hebrew University](https://en.huji.ac.il/)
The source of the article is from the blog trebujena.net