VIVA – The universe is full of energetic particles such as X-rays, gamma rays, and neutrinos. Yet most of the origins of these high-energy cosmic particles remain unexplained.
An international research team has proposed a scenario explaining that black hole or black hole sleepy aliases with low activity act as the main factory of high-energy cosmic particles. Details of their research are published in the journal Nature Communications.
Gamma rays are high-energy photons that are much more energetic than visible light. Space satellites have detected cosmic gamma rays with energies of megaelectrons up to gigaelectron volts, as quoted from the website News Wise, Wednesday, September 29, 2021.
Neutrinos are subatomic particles that have almost zero mass. They rarely interact with ordinary matter. Researchers at the IceCube Neutrino Observatory have also measured high-energy cosmic neutrinos.
Gamma rays and neutrinos must be created by powerful cosmic ray accelerators or their surroundings. However, their origins are still unknown. It is widely believed that active supermassive black holes, especially those with strong emission, are emitters of high-energy gamma rays and neutrinos.
However, recent studies have revealed that they have found no results from the gamma rays and neutrinos observed from black holes, suggesting that another source is needed for the study.
The new model shows that not only active black holes, but also dormant or sleepy-looking black holes act as factories of gamma rays and neutrinos.
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