2013/04/22 by A. A. Nucita, Nucita, A. A., G. Ingrosso +11
Physics and Astronomy · #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Solar and Stellar Astrophysics (astro-ph.SR) #astro-ph.GA #astro-ph.SR
paper · pdf · doi:10.48550/arxiv.1304.5877
Paper to appear in the proceedings of the Thirteenth Marcel Grossmann Meeting (Stockholm, Sweden July 1 - 7, 2012). Two pages
arxiv created 2013/04/22 · arxiv updated 2013/04/23
Gravitational microlensing, in case of relevant finite source size effects, provides an unique tool for the study of stellar atmospheres through the enhancement of a characteristic polarization signal. Here, we consider a set of highly magnified events and show that for different types of source stars (as hot, late type main sequence and cool giants) showing that the polarization strength may be of ≃ 0.04 percent for late type stars and up to a few percent for cool giants.