Results 11 to 20 of about 53,047 (263)
Magnetocentrifugal Mechanism of Pair Creation in AGN
Universe, 2023 In this study, we examine the efficiency of pair creation by means of the centrifugal mechanism. The strong magnetic field and the effects of rotation, which always take place in Kerr-type black holes, guarantee the frozen-in condition, leading to the ...
Zaza N. Osmanov +2 more
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Structural Characteristics of Ion Holes in Plasma
Plasma, 2021 Ion holes refer to the phase-space structures where the trapped ion density is lower at the center than at the rim. These structures are commonly observed in collisionless plasmas, such as the Earth’s magnetosphere.
Harikrishnan Aravindakshan +3 more
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Particle Acceleration Mechanisms [PDF]
International Astronomical Union Colloquium, 1994 AbstractHigh-energy particle acceleration is observed to proceed in a diverse variety of astrophysical sites ranging from the terrestrial aurorae to the most distant quasars. Particle acceleration is a fairly common channel for the release of large-scale kinetic, rotational, and magnetic energy.
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ULYSSES observations of energetic particle acceleration and the superposed CME and CIR events of November 1992 [PDF]
Annales Geophysicae, 1996 During November 1992, a series of forward and reverse shocks passed the ULYSSES spacecraft. Spectral and anisotropy measurements are reported for protons and alpha particles between 0.28 and 6 MeV observed by the Energetic Particle Composition ...
T. L. Lim +6 more
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Magnetic Fields in Galaxy Clusters and in the Large-Scale Structure of the Universe
Galaxies, 2018 The formation and history of cosmic magnetism is still widely unknown. Significant progress can be made through the study of magnetic fields properties in the large-scale structure of the Universe: galaxy clusters, filaments, and voids of the cosmic web.
Valentina Vacca +7 more
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Jitter and Jitter Self-Compton processes for GRB High-energy Emission [PDF]
Journal of Astronomy and Space Sciences, 2013 We propose jitter radiation and jitter self-Compton process in this work. We apply our model to the study of GRB prompt emission and GeV-emission. Our results can explain the multi-wavelength spectrum of GRB 100728A very well.
Jirong Mao
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Particle Acceleration Mechanisms
Space Science Reviews, 2008 We review the possible mechanisms for production of non-thermal electrons which are responsible for non-thermal radiation in clusters of galaxies. Our primary focus is on non-thermal Bremsstrahlung and inverse Compton scattering, that produce hard X-ray emission.
Petrosian, V., Bykov, A.
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Acceleration of particles by acceleration horizons [PDF]
Physical Review D, 2013 We consider collision of two particles in the vicinity of the extremal acceleration horizon (charged or rotating) that includes the Bertotti-Robinson space-time and the geometry of the Kerr throat. It is shown that the energy in the centre of mass frame E_{c.m.} can become indefinitely large if parameters of one of the particles are fine-tuned, so the ...
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On White Holes as Particle Accelerator [PDF]
Gravitation and Cosmology, 2018 We analyze scenarios of particle collisions in the metric of a nonextremal black hole that can potentially lead to ultrahigh energy $E_{c.m.}$ in their centre of mass frame. Particle 1 comes from infinity to the black hole horizon while particle 2 emerges from a white hole region.
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Galaxies, 2018 We study two galaxy clusters with radio relics, 1RXS J0603.3+4214 and RXC J1053.7+5453, through X-ray and radio observations. Radio relics are diffuse non-thermal radio sources found in outskirts of galaxy clusters.
Motokazu Takizawa
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