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19962022
most citedThe Seventh Data Release of the Sloan Digital Sky Survey

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astro-ph2001★ 122 cited

Optical Gravitational Lensing Experiment. OGLE-1999-BUL-32: the Longest Ever Microlensing Event -- Evidence for a Stellar Mass Black Hole?

Shude Mao, Martin C. Smith, P. Wozniak +5

We describe the discovery of the longest microlensing event ever observed, OGLE-1999-BUL-32, also independently identified by the MACHO collaboration as MACHO-99-BLG-22. This uniqu…