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2001ApJ...551L..23P - Astrophys. J., 551, L23-L26 (2001/April-2)
High-energy radiation from a model of quasars, active galactic nuclei, and the Galactic Center with magnetic monopoles.
PENG Q.-H. and CHOU C.-K.
Abstract (from CDS):
The surface temperature of the SMO at the Galactic center is taken as 121 K, inferred from the observed maximum of the flux spectrum of Sgr A* at the near infrared (1x1013 Hz); the radius of the SMO is about 8.1x1015 cm or 1.1x104RS (RS is the Schwarzschild radius). The mass of the SMO is derived from the observed total luminosity of Sgr A* (1x1037 ergs.s–1) as 2.5x106 M☉. Strong gamma-ray radiation with energy higher than 0.5 MeV may be emitted from the SMO. The flux of positrons emitted from the SMO is estimated to be 6.5x1042e+.s–1. The content parameter of magnetic monopoles ξ≡[(Nm/NB)/1.9x10–25](<σβ>/10–27) also may be deduced from observations to be 230. Taking the cross section of the RC effect as 1x10–27 cm2, the strength of the radial magnetic field at the surface of the SMO is estimated to be 20-100 G. Our model also can predict the production of extreme ultra-high-energy cosmic rays.
Abstract Copyright: ∼
Journal keyword(s): ISM: Cosmic Rays - Galaxies: Active - Galaxies: Magnetic Fields - Gamma Rays: Bursts - Galaxies: Quasars: General
Simbad objects: 2
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