Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....3..238s&link_type=abstract
In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 3 p 238-241 (SEE N85-34862 23-93)
Astronomy and Astrophysics
Astronomy
Cosmic Rays, Extragalactic Radio Sources, Galactic Radiation, Particle Acceleration, Shock Wave Propagation, Supernovae, Celestial Bodies, Radiation Sources, Radio Sources (Astronomy), Velocity Distribution
Scientific paper
The origin and propagation of cosmic rays in terms of conventional and supplementary newer assumptions were explored. Cosmic rays are considered to be accelerated by supernoava shock waves and to traverse clouds in the source region. After rigidity-dependent escape from these clouds into interstellar space, cosmic rays are further accelerated by the weakened shocks of old supernova remnants and then pass through additional material. The distributed acceleration hypothesis is discussed with emphasis on recent data on the abundances of cosmic-ray isotopes of N above 1 GeV/u and of He near 6 GeV/u.
Letaw John R.
Shapiro Marjorie
Silberberg Rein
Tsao C. H.
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