Mass Estimates of Dark Matter Bodies from the Timescale of Quasar Variation

Details Mass Estimates of Dark Matter Bodies from the Timescale of Quasar Variation Mass Estimates of Dark Matter Bodies from the Timescale of Quasar Variation

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007idm..conf...65h&link_type=abstract

THE IDENTIFICATION OF DARK MATTER. Proceedings of the Sixth International Workshop. Held 11-16 September 2006 in Rhodes, Greece.

Physics

Quasars: General, Galaxies: Active

Scientific paper

This paper sets out to measure the timescale of quasar variability with a view to new understanding of the size of accretion discs in active galactic nuclei. We combine data from two large scale monitoring programmes to obtain Fourier power spectra of light curves covering nearly three orders of magnitude in frequency in blue and red passbands. If the variations are interpreted as due to gravitational microlensing, then timescale measurements in the observer's frame imply a minimum mass for the microlensing bodies of around 0.4M&sun;.

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