Open AccessFinite source effect on the polarization degree induced by a single microlens
Author(s) -
Yoshida Hiroshi
Publication year - 2006
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2006.10366.x
Subject(s) - physics , microlens , polarimetry , stokes parameters , polarization (electrochemistry) , degree of polarization , optics , computational physics , classical mechanics , lens (geology) , scattering , chemistry
We investigate the effect of a single microlens on Stokes parameters. Semi‐analytical formulae of the microlensed Stokes parameters are derived. The formulae not only reduce the double integrals in the estimations of those quantities but can also be approximated to a useful form in the bypass case. By using our formulation, we show that a combination of polarimetric data with photometric data enables us to estimate not only the finite source effect but also the direction of the microlens motion.