Cosmic-ray volleys from the Galactic Center and their recent impact on the earth environment

Details Cosmic-ray volleys from the Galactic Center and their recent impact on the earth environment Cosmic-ray volleys from the Galactic Center and their recent impact on the earth environment

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987em%26p...37..241l&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 37, March 1987, p. 241-286.

Physics

7

Earth Environment, Environment Effects, Extinction, Galactic Cosmic Rays, Galactic Nuclei, Geochronology, Beryllium 10, Cosmic Dust, Interstellar Magnetic Fields, Milky Way Galaxy, Polar Regions, Relativistic Electron Beams

Scientific paper

It is proposed that outbursts of cosmic ray electrons from the Galactic Center penetrate the Galaxy relatively undamped and are able to have a major impact on the Solar System. It is suggested that one such "superwave", passing through the Solar System toward the end of the Last Ice Age, was responsible for producing major changes in the Earth's climate. The intensities of the Galactic nonthermal radio background and diffuse X-ray emission ridge are shown to vary with Galactic longitude in the same manner as electron intensity along the proposed superwave "event horizon". The high luminosities and unusual structural features which characterize the Crab Nebula and Cassiopeia A are shown to be attributable to the fact that these remnants happen to coincide with this event horizon and are being externally impacted by an intense volley of relativistic electrons travelling from the Galactic Center direction. The same cosmic ray volley is also shown to be able to account for the unusual structure of the extended radio source CTB 80.

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