Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...449..597s&link_type=abstract
Astronomy and Astrophysics, Volume 449, Issue 2, April II 2006, pp.597-608
Astronomy and Astrophysics
Astrophysics
Polarization, Magnetic Fields
Scientific paper
We consider the single scattering of the non-polarized radiation of a central star on the electrons of a plasma circumstellar envelope. We assume that such an envelope is magnetized and consists of a turbulent plasma. Two types of envelopes are considered: a spherical envelope with the dipole magnetic field and a cone-like jet with the radial magnetic field. It is shown that the existence of turbulent motions in the envelopes drastically changes the polarization degree spectrum p(λ ) and the positional angle spectrum χ(λ ) of scattered radiation compared to the non-turbulent case. The difference in spectra can be used to estimate the ratio for the energy of magnetic fluctuations to the energy of a regular magnetic field.
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