A new scenario for impulsive bursts of hard electromagnetic radiation in space plasma |
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| Authors: | B V Somov |
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| Institution: | 1.Sternberg Astronomical Institute,Moscow,Russia |
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| Abstract: | We discuss the peculiarities of fast magnetic reconnection in the essentially nonequilibrium magnetosphere of a compact relativistic
object: a neutron star, a magnetar, a white dwarf. Such a magnetosphere is produced by the interaction of a large-amplitude
shock wave with a strong stellar magnetic field. We present an analytical solution of the generalized two-dimensional problem
on the magnetosphere’s structure, the shape of its boundary, and the direct and reverse currents in a reconnecting current
sheet. The uncompensated magnetic force acting on the reverse current is determined. Characteristic parameters of the nonequilibrium
magnetosphere of compact stellar objects are estimated. We show that the excess magnetic energy of the magnetosphere is comparable
to the mechanical energy brought into it by the shock at the instant of impact. The possibility of particle acceleration to
enormous energies is discussed. |
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