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Polarization During Caustic Crossing

Published online by Cambridge University Press:  25 May 2016

Eric Agol
Eric Agol*
Affiliation:
Physics Department, University of California, Santa Barbara, Santa Barbara, CA 93106

Abstract

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The limbs of hot stars are polarized due to electron scattering, but this polarization cancels out due to rotational symmetry. During microlensing, the star is amplified by different amounts across its surface so that the limb polarization no longer cancels out, but can be observable. Polarization can be much higher for a caustic crossing during microlensing by a binary lens than for a single lens.

Type
Chapter 7: Microlensing In the Galaxy
Information
Symposium - International Astronomical Union , Volume 173: Astrophysical Applications of Gravitational Lensing , 1996 , pp. 235 - 236
Copyright
Copyright © Kluwer 1996 

References

Agol, E. 1995, MNRAS, submitted Google Scholar
Schneider, P., and Weiss, A., 1986, A&A, 164, 237 Google Scholar