High energy solar radiation and the origin of life

Details High energy solar radiation and the origin of life High energy solar radiation and the origin of life

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982orli...12....3g&link_type=abstract

Origins of Life, vol. 12, Mar. 1982, p. 3-8.

Mathematics

Logic

3

Biological Evolution, Chemical Evolution, Molecular Biology, Radiation Effects, Solar Radiation, Early Stars, Stellar Evolution, T Tauri Stars, Ultraviolet Radiation, X Ray Astronomy

Scientific paper

The flux of high-energy radiation from the early sun is estimated in light of the importance of this energy source for the early development of life. Observations of young solar-type stars in clusters and T Tauri stars are used to derive values for soft X-ray and far-UV solar radiation fluxes which are up to 30 times the present level in its first half billion years, and up to 10,000 times the present level in its first 10 million years. Averaged over the earth's surface, such fluxes would provide more energy than electrical discharges for the first half billion years of the earth's existence, and may thus play an important role in molecular evolution.

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