Publication Date:
2016-03-23
Description:
Interferometric observations of microlensing events have the potential to provide unique constraints on the physical properties of the lensing systems. In this work, we first present a formalism that closely combines interferometric and microlensing observable quantities, which lead us to define an original microlensing ( u , v ) plane. We run simulations of long-baseline interferometric observations and photometric light curves to decide which observational strategy is required to obtain a precise measurement on vector Einstein radius. We finally perform a detailed analysis of the expected number of targets in the light of new microlensing surveys (2011+) which currently deliver 2000 alerts per year. We find that a few events are already at reach of long-baseline interferometers (CHARA, VLTI), and a rate of about six events per year is expected with a limiting magnitude of K ~= 10. This number would increase by an order of magnitude by raising it to K ~= 11. We thus expect that a new route for characterizing microlensing events will be opened by the upcoming generations of interferometers.
Print ISSN:
0035-8711
Electronic ISSN:
1365-2966
Topics:
Physics
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