Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1971
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971ap%26ss..12..411s&link_type=abstract
Astrophysics and Space Science, Volume 12, Issue 2, pp.411-414
Astronomy and Astrophysics
Astrophysics
9
Scientific paper
We derive upper limits to the radiation temperaturesT t(k) for emission near the fundamental and second harmonic of the electron plasma frequency in terms of the effective temperature for plasma wavesT l(k'). We findT t(k)≲(c/(3)1/2 V e)3 T l(k') for emission near the fundamental which differs from the result of Melrose (1970b) by the factor in parentheses. This factor can exceed 4×104 in some plasmas. The conditions under which this limit could be reached are delinated. For emission near the second harmonicT t(k)≤T l(k') since the absorption coefficient in this case can only be positive.
Smith Donelson F.
Sturrock Peter Andrew
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