Dark Matter Decay and the Spiral Galaxy NGC891

Details Dark Matter Decay and the Spiral Galaxy NGC891 Dark Matter Decay and the Spiral Galaxy NGC891

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.247..506s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 247, NO. 3/DEC1, P. 506, 1990

Astronomy and Astrophysics

Astronomy

14

Scientific paper

We study the implications for NGC 891 of the DDM hypothesis which states that dark matter decays into hydrogen-ionizing photons on a time-scale of 10^23^s. We are able to derive many details of the observed Hα emission of this galaxy using only its rotation curve and properties of our own very similar galaxy. We also use the hypothesis to determine the distance and the peculiar velocity of NGC 891 and obtain agreement with an independent estimate of those quantities. The detailed agreement of the consequences of the DDM hypothesis with observations of NGC 891 provides strong support for this hypothesis.

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