Test of the decaying dark matter hypothesis using the Hopkins Ultraviolet Telescope

Details Test of the decaying dark matter hypothesis using the Hopkins Ultraviolet Telescope Test of the decaying dark matter hypothesis using the Hopkins Ultraviolet Telescope

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.351..128d&link_type=abstract

Nature (ISSN 0028-0836), vol. 351, May 9, 1991, p. 128-130. NASA-supported research.

Astronomy and Astrophysics

Astronomy

48

Dark Matter, Decay, Galactic Clusters, Ultraviolet Astronomy, Ultraviolet Telescopes, Astronomical Spectroscopy, Emission Spectra, Neutrinos, Spectral Emission

Scientific paper

Sciama'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.

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