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Puzzlement about thermal redshift

Vesselin I. Dimitrov
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Abstract

Discussed is the classical theoretical description of the experimentally established thermal redshift of spectral lines. Straightforward calculation of the observable spectrum from a canonical ensamble of monochromatic radiators yileds overall blueshift rather than redshift. It is concluded that the customary explanation of the thermal redshift as a second order Doppler effect does not bear closer examination, and that in fact, the phenomenon ''thermal redshift'' is not yet fully uderstood in classical terms.

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Vesselin I. Dimitrov. 1997-07-03. Puzzlement about thermal redshift. https://doi.org/10.1016/s0375-9601(98)00168-6

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