An upgrade of the microlensing rate.

Details An upgrade of the microlensing rate. An upgrade of the microlensing rate.

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ncimb.112..289d&link_type=abstract

Nuovo Cimento B, Vol. 112B, No. 2 - 3, p. 289 - 294

Computer Science

Dark Matter: Gravitational Microlensing, Dark Matter: Galactic Halo, Gravitational Microlensing: Galactic Halo, Gravitational Microlensing: Magellanic Clouds

Scientific paper

The authors study different models of dark-matter distribution for the halo of our Galaxy. Assuming that the dark matter is in form of MACHOs, they compute the expected number of microlensing events and their average time duration for an experiment monitoring stars in the LMC. The main effect of considering models with anisotropy in the velocity space is to reduce the microlensing rate by about 30% and to increase, but only slightly, the mean event duration, as compared to the standard spherical halo model. Consideration of different luminous models for the visible part of the Galaxy also induce variations in the microlensing results by roughly the same amount as mentioned above.

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