The MACHO Project Microlensing Results from 5 . 7 Years of LMC Observations

@inproceedings{Alcock2000TheMP,
  title={The MACHO Project Microlensing Results from 5 . 7 Years of LMC Observations},
  author={Charles Alcock and Roberta Allsman and David R. Alves and Tim S. Axelrod and Andrew C. Becker and David P. Bennett and K. H. Cook and Neal K. Dalal and Andrew J. Drake and Kenneth C. Freeman and Marla C. Geha and Kim Griest and Matthew J. Lehner and Stuart L. Marshall and Dante Minniti and C. Alexander Nelson and Bruce A. Peterson and Piotr A. Popowski and Matthew R Pratt and Peter J. Quinn and C. W. Stubbs and Will Sutherland and Austin B. Tomaney and T. Vandehei and Douglas L. Welch},
  year={2000}
}
We report on our search for microlensing towards the Large Magellanic Cloud (LMC). Analysis of 5.7 years of photometry on 11.9 million stars in the LMC reveals 13 – 17 microlensing events. A detailed treatment of our detection efficiency shows that this is significantly more than the ∼ 2 to 4 events expected from lensing by known stellar populations. The timescales (t̂ ) of the events range from 34 to 230 days. We estimate the microlensing optical depth towards the LMC from events with 2 < t… CONTINUE READING
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