Gravitational Microlensing Results from Macho
Astrophysics
2009-10-22 v1
Abstract
We provide a status report on our search for dark matter in our Galaxy in the form of massive compact halo objects (MACHOs), using gravitational microlensing of background stars. This search uses a very large CCD camera on the dedicated 1.27m telescope at Mt.~Stromlo, Australia, and has been taking data for 2 years. At present, we have analysed data for 8 million stars in the Large Magellanic Cloud over 1 year, resulting in one strong candidate event and two lower-amplitude candidates. We have also analysed 5 million stars in the Galactic Bulge for 0.5 years, yielding approximately 27 microlensing events.
Cite
@article{arxiv.astro-ph/9409034,
title = {Gravitational Microlensing Results from Macho},
author = {W. Sutherland and C. Alcock and R. Allsman and T. Axelrod and D. Bennett and S. Chan and K. Cook and K. Freeman and K. Griest and S. Marshall and S. Perlmutter and B. Peterson and M. Pratt and P. Quinn and A. Rodgers and C. Stubbs},
journal= {arXiv preprint arXiv:astro-ph/9409034},
year = {2009}
}
Comments
Talk given at Neutrino-94, to appear in Nucl. Phys. B Proceedings Supp. 8 pages, 4 figures, uuencoded compressed PostScript