Probing galactic halo dark matter with microlensing

Details Probing galactic halo dark matter with microlensing Probing galactic halo dark matter with microlensing

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...247...73n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 247, no. 1, July 1991, p. 73-76.

Astronomy and Astrophysics

Astrophysics

14

Dark Matter, Gravitational Lenses, Milky Way Galaxy, Halos, Relativity, Stellar Gravitation, Stellar Mass

Scientific paper

A revised estimate of the probability of microlensing of resolved stars by compact objects with low stellar masses in the Galactic halo is presented, using the detection volume formalism of Nemiroff (1989), and computed as a function of lens mass, source amplification, Galactic rotation speed, and extent of the Galactic halo. The probability of lensing at any specific time is calculated and shown to be a weak function of both the extent of the Galactic halo and the mass of the stellar object but proportional to the amplitude of lensing at large amplitude. STET detection volume formalism is then extended to include relative lens motion.

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