Ultraviolet Radiation inside Interstellar Grain Aggregates. II. Field Depolarization

Details Ultraviolet Radiation inside Interstellar Grain Aggregates. II. Field Depolarization Ultraviolet Radiation inside Interstellar Grain Aggregates. II. Field Depolarization

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...633..953s&link_type=abstract

The Astrophysical Journal, Volume 633, Issue 2, pp. 953-966.

Astronomy and Astrophysics

Astronomy

4

Ism: Dust, Extinction, Radiative Transfer

Scientific paper

We study the polarization of the UV light within the cavities of interstellar grain aggregates modeled as homogeneous spheres containing several spherical voids. The incident field is a linearly polarized plane wave. We found that field depolarization occurs in all examined cases so that the field within the cavities has the features of an elliptically polarized wave. The depolarization of the field does not depend on the material of the grains but on the geometry of the problem only. The implications of this result for the interstellar photochemistry are briefly discussed.

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