Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jsara...2...14c&link_type=abstract
Journal of the Southeastern Association for Research in Astronomy, vol. 2, p. 14-18
Astronomy and Astrophysics
Astronomy
Polarization, Thomson Scattering, Rayleigh Scattering
Scientific paper
We model the polarization arising from electron scattering of light by a circumstellar envelope of an arbitrary shape. This is accomplished by describing the scattering function, stellar flux, and envelope density distribution in general terms using spherical harmonics and then applying their orthogonality relationships in integral expressions that describe the net observed polarization. We then take a specific example of a uniform stellar light source surrounded by an ellipsoidal shell. As an example, a polarization of 25 percent is found for the case of a disk-like star that is viewed edge-on and that is surrounded by a a disk-like envelope oriented viewed face-on to the observer.
Carson John C.
Ignace Richard
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