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Origin of ultra-high-energy gamma-rays from Cygnus X-3 and related sourcesDiffusive shock acceleration of ions is examined as the mechanism responsible for the ultrahigh energy (UHE) gamma ray emission observed from Cygnus X-3 and several other binary X-ray sources at energies of 10 to the 15th eV and higher. The shock acceleration can under reasonable assumptions be sufficiently short to allow acceleration of ions to energies near 10 to the 16th eV. It is proposed that the subsequent proton-proton collisions and photodissociation of He-4 can produce a flux of neutrons that escapes from the acceleration site despite high magnetic fields. These neutrons, by interacting with the binary companion, produce the observed UHE radiation.
Document ID
19860041738
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kazanas, D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ellison, D. C.
(Maryland, University College Park, MD, United States)
Date Acquired
August 12, 2013
Publication Date
January 30, 1986
Publication Information
Publication: Nature
Volume: 319
ISSN: 0028-0836
Subject Category
Astrophysics
Accession Number
86A26476
Funding Number(s)
CONTRACT_GRANT: NSF AST-83-17755
CONTRACT_GRANT: NGR-21-002-316
Distribution Limits
Public
Copyright
Other

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