Researchers have succeeded in something that has been pursued since the 1970s: explaining the X-ray radiation from the black hole surroundings. The radiation originates from the combined effect of the chaotic movements of magnetic fields and turbulent plasma gas.
Researchers at the University of Helsinki have succeeded in something that has been pursued since the 1970s: explaining the X-ray radiation from the black hole surroundings. The radiation originates from the combined effect of the chaotic movements of magnetic fields and turbulent plasma gas.
Since the 1970s, attempts have been made to model the radiation from the accretion flows around the black holes. At the time, X-rays were already thought to be generated through the interaction of the local gas and magnetic fields, similar to how the Sun's surroundings are heated by its magnetic activity via solar flares.
Nättilä describes how electrons and positrons, antiparticles to one another, usually do not occur in the same place. However, the extremely energetic surroundings of black holes make even this possible. In general, radiation does not interact with plasma either. However, photons are so energetic around black holes that their interactions are important to plasma, too.
"The X-ray observations of black hole accretion disks show exactly the same kind of variation between the so-called soft and hard states," Nättilä points out.. The simulation used in the study is the first plasma physics model to include all the important quantum interactions between radiation and plasma. The study is part of a project headed by Nättilä and funded with a €2.
Cosmic Rays Solar Flare Astrophysics Albert Einstein Physics Quantum Physics Thermodynamics
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Supercomputer simulations offer explanation for X-ray radiation from black holesResearchers at the University of Helsinki have succeeded in something that has been pursued since the 1970s: explaining the X-ray radiation from black hole surroundings. The radiation originates from the combined effect of the chaotic movements of magnetic fields and turbulent plasma gas.
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