Researchers from Columbia University (USA) presented a new explanation of the physics processes of high-power electromagnetic glow areas of black holes and neutron stars. The results were published in the Astrophysical journal.
Scientists for decades to discuss the nature of electromagnetic radiation emitted by the regions, which are the densest objects in the Universe — black holes and neutron stars.
It is believed that high energy radiation, due to which these areas glow brightly, generated by electrons moving with velocities close to the speed of light. However, that process accelerates these particles has remained a mystery.
Building a massive supercomputer simulation of the kinetic processes taking place in the emission regions, the American astrophysics of Comisso Luca (Luca Comisso) and Lorenzo sironi (Lorenzo Sironi) concluded that a strong electromagnetic excitation occurs due to the combined action of two factors: the turbulent motion of the particles and the effect of reconnection of strong magnetic fields.
“Areas that are black holes and neutron stars, is filled with extremely hot gas of charged particles and magnetic field lines, displace the chaotic movements of gas cause magnetic reconnection — the phenomenon in which magnetic field lines break and reconnect again quickly — presented in a press release, Columbia University words of Luke Comisso. — Due to the electric field created by this reconnection and turbulence accelerate particles to extreme energies, which are much higher than in the most powerful accelerators such as the Large hadron Collider at CERN”.
“To calculate the trajectories of hundreds of billions of charged particles, which self-consistently determine the nature of the electromagnetic field, we used the most accurate method of particle-in-cell,” says Lorenzo sironi.
Simulations showed that at the time of reconnection, there are particles that are accelerated by the turbulent magnetic fields to very high energies. The greater part of its energy particles get randomly Bouncing with extremely high speed from fluctuations of the turbulence. In strong magnetic fields the particles move on curved trajectories, emitting electromagnetic radiation.
“This is the radiation that we see around black holes and neutron stars,” adds sironi.
The authors plan to test their theoretical constructions on the crab nebula in the constellation Taurus is the most bright object with a powerful electromagnetic radiation. Nebula was formed in a supernova that exploded in 1054.
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