The Magnetospheric Flare on Compact Magnetized Object (Neutron Star or White Dwarf) - Model for Cosmological Gamma-Ray Burst (GRB)
Ya. N. Istomin, B. V. Komberg
Abstract
The SN explosion in the closed binary can give the magnetospheric flare possessing the properties of GRB. The SN shock, flowing around the magnetosphere of a magnetized neutron star or a white dwarf, produces a narrow magnetic tail 109 cm long, 108 cm wide and a magnetic field of 106 Gauss. Fast particles (Lorentz factor of 104), generated in the tail by reconnection processes, radaite gamma rays of the 100 KeV - 1 MeV energies. The duration of radiation T<1 sec corresponds to a short GRB. Apart, the powerful shock can tear and accelerate part of the tail. That is the relativistic, strongly magnetized jet, producing gamma radiation and also X-rays and optic afterglow. That is long (T> 10 sec) GRB. The duration of the afterglow is inversly proportional to the photon energy and is several months for optic.
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