Gravitational Microlensing

What is microlensing?

Gravitational microlensing refers to the apparent brightening of a background source caused by a lensing object located sufficiently close to the line of sight. This gravitational focusing effect does not require the intervening object to be luminous, and hence has been suggested as a way to detect dark matter. In the Galaxy, microlensing can be used to detect the so-called MAssive Compact Halo Objects (MACHOs) in the Galactic halo ranging from 10^-7 solar mass to 10^6 solar mass. A good introduction can be found at the PLANET collaboration web site.

Groups working on Microlensing


Reviews on Microlensing

To learn more about microlensing, you can read the following reviews.

If you have any questions or comments, please send an email to me (the address can be found in the Home Page section).