Gamma rays and cosmic rays from supernova explosions and young pulsars in the past

Details Gamma rays and cosmic rays from supernova explosions and young pulsars in the past Gamma rays and cosmic rays from supernova explosions and young pulsars in the past

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410.1172d&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 1172-1177 (1997).

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Supernovae, Cosmic Rays, Gamma-Ray Sources, Gamma-Ray Bursts, Pulsars

Scientific paper

Gamma rays (GR) as well as cosmic rays (CR) from supernova (SN) explosions and young pulsars (YP) in the past produced in the Earth's atmosphere neutrons; the interaction of neutrons with atoms of nitrogen 14N generates radiocarbon 14C with decay time 5730 years. By using a method of coupling functions, taking into account vertical and global mixing and exchange processes of elements on the Earth, on the basis of experimental data of radiocarbon contents in annual rings of trees and on contents of some other cosmogenic radionuclides in dated samples became possible to estimate GR fluxes from SN explosions and YP in our Galaxy in the last few thousand years as well as CR fluxes from local SN explosions (up to about 100 pc from the Sun) in the last 150 thousand years.

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