Microlensing as a Probe of Galactic Dark Matter and Extra-solar Planets

Details Microlensing as a Probe of Galactic Dark Matter and Extra-solar Planets Microlensing as a Probe of Galactic Dark Matter and Extra-solar Planets

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000dda....31.1007g&link_type=abstract

American Astronomical Society, DDA Meeting #31, #10.07; Bulletin of the American Astronomical Society, Vol. 32, p.866

Astronomy and Astrophysics

Astronomy

Scientific paper

We summarize recent result from the MACHO collaboration search for baryonic dark matter in the Milky Way and discuss various possible interpretations. While a halo made entirely of massive compact halo objects (MACHOs) is strongly ruled out by this data, 14-17 microlensing events are seen towards the LMC. These imply either that approximately 20 dark matter in the Milky Way consists of objects of about 0.5 solar masses, or that the Milky Way or LMC stellar distributions are different than current models. If there is time, we will also discuss how microlensing is a powerful new method of searching for extra-solar planets throughout the Galaxy.

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