Anatomy of a cosmic-ray neutrino source and the Cygnus X-3 system

Details Anatomy of a cosmic-ray neutrino source and the Cygnus X-3 system Anatomy of a cosmic-ray neutrino source and the Cygnus X-3 system

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.316..418s&link_type=abstract

Nature (ISSN 0028-0836), vol. 316, Aug. 1, 1985, p. 418-420.

Computer Science

15

Cosmic Rays, Gamma Rays, Neutrinos, Radiation Sources, X Ray Binaries, Pion Beams, Stellar Luminosity

Scientific paper

The effects of an intense beam of ultra-high energy cosmic rays from a compact object in the Cygnus X-3 binary system hitting the companion star, and of the subsequent production of secondary neutrinos, are examined. A maximum allowable beam luminosity of about 10 to the 42nd erg/s is found for a system containing a 1-10 solar mass main sequence target star. The proton beam must heat a relatively small area of the target star to satisfy observational constraints on the resulting stellar wind. With such a model, the neutrino to gamma-ray flux ratio of about 1000 can result from a combination of gamma-ray absorption and a large neutrino to gamma-ray duty cycle ratio. It is found that the high density of the atmosphere resulting from compression by the beam leads to pion cascading and a neutrino spectrum peaking at 1-10 GeV energies.

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