The Origin of Cosmic Rays
Open Access
- 1 May 1962
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 27 (5) , 999-1012
- https://doi.org/10.1143/ptp.27.999
Abstract
A brief discussion of present ideas concerning the origin of cosmic rays is given. Arguments are then given to show that the strong extragalactic radio sources are short-lived with time-scales ≲106 years. If we now accept the concept of the local supercluster of galaxies, it is shown that the frequency of strong radio sources is sufficient to produce an energy density of cosmic rays in this supercluster of the order of 10-13-10-12 erg/cm3. Thus it is possible that the extragalactic component of cosmic rays arising in the supercluster (i. e. within distances of ∼30 Mpc of our Galaxy) is appreciable, and it might account for the majority of the cosmic rays in the Galaxy. Some consequences of this hypothesis are examined.Keywords
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