Microlensing in M31; Preliminary lightcurves from MEGA

Details Microlensing in M31; Preliminary lightcurves from MEGA Microlensing in M31; Preliminary lightcurves from MEGA

2001-07-30

arxiv.org/abs/astro-ph/0107560v1

Astronomy and Astrophysics

Astrophysics

4 pages, to appear in the proceedings of the STScI 2001 spring symposium "The Dark Universe"

Scientific paper

One of the possible astrophysical solutions to the galactic dark matter problem is the presence of a significant amount of ``dark'' compact objects (MACHOs) in galactic dark matter halos. MEGA (Microlensing Exploration of the Galaxy and Andromeda) tries to find proof for or against the presence of compact objects in the halo of the Andromeda galaxy (M31) by looking for the microlensing signature that would be induced by these objects. The lightcurves presented here are preliminary and based on observations of M31 with the Isaac Newton Telescope (INT) on La Palma during the second half of 1999.

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