Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1968
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1968ap%26ss...1..216h&link_type=abstract
Astrophysics and Space Science, Volume 1, Issue 2, pp.216-229
Astronomy and Astrophysics
Astrophysics
7
Scientific paper
The accretion of matter onto stars formed by carbon-oxygen cores triggers hydrogen flicker. The development of hydrogen flicker and the shock generation associated therewith are discussed. If the matter thus ejected is halted by a dense gas surrounding a star, a corona of high temperature is formed. This may take place in dense planetary nebulae and is regarded as an origin of starlike X-ray sources. More violent hydrogen flicker takes place at white dwarfs and may be an origin of novae. Nuclear-reaction products ejected are positron sources and they may provide MeV positrons as strong as 10-3 cm-2 sec-1 sr-1. Nuclides produced by hydrogen flicker and a part of the carbon-oxygen core ejected may contribute to galactic cosmic rays; their chemical composition is like that observed in cosmic rays.
Hayakawa Satio
Sugimoto Daiichiro
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