Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.194....3b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 194, Jan. 1981, p. 3-14.
Astronomy and Astrophysics
Astronomy
53
Active Galactic Nuclei, Black Holes (Astronomy), Galactic Radiation, Neutrinos, Quasars, Stellar Radiation, Electromagnetic Radiation, Energetic Particles, Gamma Ray Astronomy, Particle Acceleration, Relativity, Stellar Gravitation
Scientific paper
The nature of the cores in quasars and active galactic nuclei is still controversial, though massive black holes or magnetoids (spinars) seem to be the most plausible models for core activity. It is difficult to distinguish between these by observations of electromagnetic radiation alone, and it is suggested that high-energy (greater than approximately 1 TeV) neutrinos can be a useful tool for solving the problem. A structureless magnetoid, and a black hole surrounded by a dense shell of gas or a 'gas' of X-ray photons, can be convincingly distinguished by measuring the ratio of neutrino (greater than 1 TeV) to gamma-ray (greater than 70 MeV) fluxes. The possibility of a cocooned black hole (i.e., a black hole surrounded by a gaseous shell rarefied inside and dense outside) and of particle acceleration in the cavity is also discussed.
Berezinskii V. S.
Ginzburg Viktor L.
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