Thermalization constraints and spectral distortions for massive unstable relic particles

Details Thermalization constraints and spectral distortions for massive unstable relic particles Thermalization constraints and spectral distortions for massive unstable relic particles

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvl..70.2661h&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 70, no. 18, p. 2661-2664.

Astronomy and Astrophysics

Astronomy

71

Astronomical Spectroscopy, Particle Mass, Relic Radiation, Thermalization (Energy Absorption), Bremsstrahlung, Jeans Theory, Universe

Scientific paper

Spectral distortions to the cosmic background radiation due to massive unstable relic particles which decayed during the thermalization epoch are calculated. We impose stringent constraints on such particles from recent observations. Early energy injection of this type generates characteristic spectral distortions which could potentially serve to measure the baryon density of the Universe.

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