"Electromagnetic burst shape from collapsing magnetized object", Pis'ma v AZh, submitted, 1996
Abstract:
The shape of magneto-dipole losses is investigated taking into account the relativistic effect of magnetic field dissipation in the result of the collapse. In terms of the simple model the solution of the burst like type has been obtained both for a direct collapse and for a case of formation of a fast-roating, self-gravitating object colled spinar. The analytical expressions are derived which describe the burst dependence on radius. The burst dependences on time for an infinitely far observer, as well as the maximum energy of relativistic particles accelerated by an electric field are simulated. The most interesting is the possibility of acceleration of particles up to Planck energies in the vicinity of the considered objects. Some astrophysical applications to active galactic nuclei, QSOs are briefly discussed. For the first time the possibility of the formation of the spinars from merging neutron stars is indicated, considering or not the relationship with $\gamma$-ray bursts.

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