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Explaining the Infrared and Submillimeter Backgrounds by Decaying Particles

Published online by Cambridge University Press:  08 February 2017

Boqi Wang  and
George B. Field
Boqi Wang
Affiliation:
Harvard-Smithsonian Center for Astrophysics Cambridge, MA 02138 USA
George B. Field
Affiliation:
Harvard-Smithsonian Center for Astrophysics Cambridge, MA 02138 USA

Abstract

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We propose that photons produced by decaying particles may account for the recently observed isotropic infrared background (IRB) between 1 and 5 μm. We find that for decaying particle masses mx between 5 and 18 keV, lifetime τd between 2 and 7 × 1010 s, and photon branching ratio Bγ between 4 and 9 × 10−4, the observed spectrum of decay photons is consistent with the observed spectrum of the IRB. The same parameters can explain the submillimeter background.

Type
IV. Extragalactic Background Radiation and Cosmology
Information
Symposium - International Astronomical Union , Volume 139: The Galactic and Extragalactic Background Radiation , 1990 , pp. 387 - 389
Copyright
Copyright © Kluwer 1990 

References

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