Microlens Masses From Astrometry and Parallax in Space-Based Surveys: From Planets to Black Holes
arXiv:1401.2463 · doi:10.1088/0004-637X/784/1/64
Abstract
We show that space-based microlensing experiments can recover lens masses and distances for a large fraction of all events (those with individual photometric errors <~ 0.01 mag) using a combination of one-dimensional microlens parallaxes and astrometric microlensing. This will provide a powerful probe of the mass distributions of planets, black holes, and neutron stars, the distribution of planets as a function of Galactic environment, and the velocity distributions of black holes and neutron stars. While systematics are in principle a significant concern, we show that it is possible to vet against all systematics (known and unknown) using single-epoch precursor observations with the Hubble Space Telescope roughly 10 years before the space mission.
Submitted to ApJ, 16 pages, 1 Figure
References in corpus (2)
Cited by in corpus (26)
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