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Astron. Astrophys. Suppl. Ser.
Volume 138, Number 3, September 1999
Gamma-Ray Bursts in the Afterglow Era Contents Rome, November 3-6, 1998
Page(s) 511 - 512
Published online 15 September 1999
DOI: 10.1051/aas:1999330

Astron. Astrophys. Suppl. Ser. 138, 511-512

On evolution of the pair-electromagnetic pulse of a charged black hole

R. Ruffini1 - J.D. Salmonson2 - J.R. Wilson2 - S.-S. Xue1

1 - I.C.R.A.-International Center for Relativistic Astrophysics and Physics Department, University of Rome "La Sapienza",
I-00185 Rome, Italy
2 - Lawrence Livemore National Laboratory, University of California, Livermore, California, U.S.A.

Received January 21; accepted March 10, 1999


Using hydrodynamic computer codes, we study the possible patterns of relativistic expansion of an enormous pair-electromagnetic-pulse (P.E.M. pulse); a hot, high density plasma composed of photons, electron-positron pairs and baryons deposited near a charged black hole (EMBH). On the bases of baryon-loading and energy conservation, we study the bulk Lorentz factor of expansion of the P.E.M. pulse by both numerical and analytical methods.

Key words: black hole physics -- gamma-ray bursts, theory, observations

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