Meson Synchrotron Emission from Central Engines of Gamma-Ray Bursts with Strong Magnetic Fields.
Astrophys J
; 525(2): L117-L120, 1999 Nov 10.
Article
em En
| MEDLINE
| ID: mdl-10525468
ABSTRACT
Gamma-ray bursts (GRBs) are presumed to be powered by the still unknown central engines with timescales in the range from 1 ms to approximately a few seconds. We propose that the GRB central engines would be a viable site for strong meson synchrotron emission if they were compact astrophysical objects, such as neutron stars or rotating black holes with extremely strong magnetic fields (H approximately 1012-1017 G), and if protons or heavy nuclei were accelerated to ultrarelativistic energies on the order of approximately 1012-1022 eV. We show that the charged scalar mesons like pi+/- and heavy vector mesons like rho, which have several decay modes onto pi+/-, could be emitted, with a high intensity that is a thousand times larger than photons, through strong couplings to ultrarelativistic nucleons. These meson synchrotron emission processes eventually produce a burst of very high energy cosmic neutrinos with 1012 eV=Enu. These neutrinos are to be detected during the early-time duration of short GRBs.
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MEDLINE
Idioma:
En
Ano de publicação:
1999
Tipo de documento:
Article