Electron-positron outflow from black holes

Details Electron-positron outflow from black holes Electron-positron outflow from black holes

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.2904v&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #29.04; Bulletin of the American Astronomical Society, Vol. 31, p.1413

Astronomy and Astrophysics

Astronomy

Scientific paper

Gamma-ray bursts (GRBs) appear as the brightest transient phenomena in the Universe. The nature of the central engine in GRBs is a missing link in the theory of fireballs to their stellar mass progenitors. Here it is shown that rotating black holes produce electron-positron outflow when brought into contact with a strong magnetic field. For a nearly extreme Kerr black hole and in the strong magnetic field limit, particle outflow from an initial state of electrostatic equilibrium has a normalized isotropic emission of about 5*E48(B/Bc)2(M/7M_sun)^2sin ^2θ erg/s, where B is the external magnetic field strength, Bc=4.4x 1013G, and M is the mass of the black hole. A connection with fireballs in γ -ray bursts is given. Partial support for this work is received from NASA Grant 5-7012 and an MIT Reed Award.

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