Ultra high energy gamma rays, cosmic rays and neutrinos from accreting degenerate stars

Computer Science

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Accretion Disks, Cosmic Ray Showers, Cygnus Constellation, Eddington Approximation, X Ray Binaries, Antiprotons, Cosmic Rays, Neutrino Beams, Neutron Stars, White Dwarf Stars, X Ray Binaries

Scientific paper

Super-Eddington accretion for a recently proposed unipolar induction model of cosmic ray acceleration in accreting binary star systems containing magnetic white dwarfs or neutron stars is considered. For sufficiently high accretion rates and low magnetic fields, the model can account for: (1) acceleration of cosmic ray nuclei up to energies of 10 to the 19th power eV; (2) production of more or less normal solar cosmic ray composition; (3) the bulk of cosmic rays observed with energies above 1 TeV, and probably even down to somewhat lower energies as well; and (4) possibly the observed antiproton cosmic ray flux. It can also account for the high ultra high energy (UHE) gamma ray flux observed from several accreting binary systems (including Cygnus X-3), while allowing the possibility of an even higher neutrino flux from these sources, with Lnu/L sub gamma is approximately 100.

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