The magnetospheric flare on compact magnetized object (neutron star or white dwarf): model for cosmological gamma-ray burst (GRB)

Abstract A SN explosion in a closed binary can give a 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 (γ≃104), generated in the tail by reconnection processes, radiate gamma rays of 100 KeV–1 MeV energies. The duration of radiation T 10 s) GRB. The duration of the afterglow is inversely proportional to the photon energy and is several months for optical radiation.