Physics
Scientific paper
Oct 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.305..609w&link_type=abstract
Nature (ISSN 0028-0836), vol. 305, Oct. 13, 1983, p. 609, 610.
Physics
41
Cosmic Ray Showers, Galactic Cosmic Rays, Gamma Rays, Radiant Flux Density, Radiation Sources, Cos-B Satellite, Pulsars, Spectral Energy Distribution
Scientific paper
The flux from cosmic ray sources detected in air showers is examined for the way the amplitude and phase of the anisotropy of cosmic rays varies with energy. Shower spectra in the MeV-GeV range have been detected arising from the direction of the Crab pulsar, the Vela pulsar, Geminga, and Cyg X-3 using instrumentation on board the Cos B satellite and ground stations. Some sources have exhibited flux beyond the 10 to the 15th eV region, although no global counts of the sources are yet available. It is suggested that photons are responsible for the amplitude and phase change that is most noticeable in the 10 to the 15th to 10 to the 17th eV range, with the number of photons being equal to the number density of protons times the second harmonic. It is noted that the intensity of gamma rays originating from Cyg X-3 indicates that 30 objects like Cyg X-3 would be sufficient to account for the entire observed intensity of gamma ray particles.
Wdowczyk Jerzy
Wolfendale Arnold W.
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