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Test of the decaying dark matter hypothesis using the Hopkins Ultraviolet TelescopeSciama's hypothesis that the dark matter associated with galaxies, galaxy clusters, and the intergalactic medium consists of tau neutrinos of rest mass 28-30 eV whose decay generates ultraviolet photons of energy roughly 14-15 eV, has been tested using the Hopkins Ultraviolet Telescope flows aboard the Space Shuttle Columbia. A straightforward application of Sciama's model predicts that a spectral line from neutrino decay photons should be observed from the rich galaxy cluster Abell 665 with an SNR of about 30. No such emission was detected. For neutrinos in the mass range 27.2-32.1 eV, the observations set a lower lifetime limit significantly greater than Sciama's model requires.
Document ID
19910053869
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Davidsen, A. F. (Johns Hopkins Univ. Baltimore, MD, United States)
Kriss, G. A. (Johns Hopkins Univ. Baltimore, MD, United States)
Ferguson, H. C. (Johns Hopkins Univ. Baltimore, MD, United States)
Blair, W. P. (Johns Hopkins Univ. Baltimore, MD, United States)
Bowers, C. W. (Johns Hopkins University Baltimore, MD, United States)
Kimble, R. A. (NASA Goddard Space Flight Center Greenbelt; Johns Hopkins Universtiy, Baltimore, MD, United States)
Date Acquired
August 15, 2013
Publication Date
May 9, 1991
Publication Information
Publication: Nature
Volume: 351
ISSN: 0028-0836
Subject Category
ASTROPHYSICS
Distribution Limits
Public
Copyright
Other