Cosmic-ray and diffuse-matter information from extraterrestrial γ-rays

Autor:	S. P. Shen, S. N. Milford
Rok vydání:	1962
Předmět:	Physics Nuclear and High Energy Physics Photon Astrophysics::High Energy Astrophysical Phenomena Gamma ray Astronomy Astronomy and Astrophysics Cosmic ray Astrophysics Atomic and Molecular Physics and Optics Extraterrestrial life Emissivity Intergalactic travel Satellite Order of magnitude
Zdroj:	Il Nuovo Cimento. 23:77-87
ISSN:	1827-6121 0029-6341
DOI:	10.1007/bf02733543
Popis:	Among the various mechanisms capable of producing extraterrestrial γ-rays, two (« collision » and « radioactivity ») are singled out for discussion. Based on existing measurements of primary γ-rays, an upper limit of 10 cm−2 s−1 (order of magnitude) can be placed on the omnidirectional flux, averaged over time and space, of intergalactic cosmic rays exceeding about 600 MeV. Current and future satellite γ-ray measurements can improve this estimate and may also yield some information on the energy spectrum of interstellar cosmic rays and on the density of diffuse matter in space. « Collision » and « radioactivity » γ-ray fluxes are estimated for a number of likely sources.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1ada32690d85cd1b984f7e7daaa6f1aa https://doi.org/10.1007/bf02733543 Zobrazit plný text záznamu Full text from SpringerLink