Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-09-13
Astronomy and Astrophysics
Astrophysics
33 pages, 19 figures, to appear in the "Proceedings of the Ninth Marcel Grossmann Meeting on General Relativity (MGIXMM)", Wor
Scientific paper
The idea that the vacuum polarization process occurring during gravitational collapse to a black hole endowed with electromagnetic structure (EMBH) could be the origin of gamma ray bursts (GRBs) is further developed. EMBHs in the range 3.2 -- 10$^6$ solar masses are considered. The formation of such an EMBH, the extraction of its mass-energy by reversible transformations and the expansion of the pair-electromagnetic pulse (PEM pulse) are all examined within general relativity. The PEM pulse is shown to accelerate particles to speeds with Lorentz gamma factors way beyond any existing experiment on Earth. Details of the expected burst structures and other observable properties are examined.
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