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Distortion of Cosmic Microwave Background Radiation and Decay of Weakly Interacting Particles

Published online by Cambridge University Press:  03 August 2017

Katsuhiko Sato  and
Masahiro Kawasaki
Katsuhiko Sato
Affiliation:
Department of Physics, Faculty of Science, the University of Tokyo, Tokyo 113 Japan
Masahiro Kawasaki
Affiliation:
Department of Physics, Faculty of Science, the University of Tokyo, Tokyo 113 Japan

Extract

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Recently Nagoya-Berkeley group (Matsumoto et al, 1987) observed microwave radiation in the Wien region precisely and found the excess of temperature. In the previous paper (kawasaki and Sato, 1986), we investigated the distortion of the spectrum of microwave background radiation due to the radiative decay of weakly interacting massive particles. At that time, however, the distortion was not observed. In the present paper, we investigated in detail whether the decay of WIMPs can account for the observed distortion of the spectrum or not. In Fig. 1, an example is shown.

Type
Appendix 1: Poster Papers
Information
Symposium - International Astronomical Union , Volume 130: Large Scale Structures of the Universe , 1988 , pp. 509
Copyright
Copyright © Reidel 1988 

References

Kawasaki, M. and Sato, K. 1986, Phys. Lett. B169, 280.CrossRefGoogle Scholar
Kawasaki, M. and Sato, K. 1987, preprint UTAP-59/87.CrossRefGoogle Scholar
Matsumoto, T. et al, 1987, submitted to Astrophys. J. Lett.Google Scholar