Scattering and polarization of light by rough and porous interstellar grains

Details Scattering and polarization of light by rough and porous interstellar grains Scattering and polarization of light by rough and porous interstellar grains

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...247..497p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 247, no. 2, July 1991, p. 497-504.

Astronomy and Astrophysics

Astrophysics

25

Interstellar Matter, Light Scattering, Linear Polarization, Surface Roughness, Carbonaceous Materials, Cosmic Dust, Nebulae, Porosity, Scattering Cross Sections, Silicates

Scientific paper

Interaction of light with rough or porous interstellar grains is studied. Scattering diagrams and polarization curves are presented for several roughness and porosity rates. Obsidian and glassy carbon particles are considered for size parameters either much smaller than or of the same order as the wavelength of the incident light. In the last case scattering diagrams and polarization curves are drastically affected by roughness and porosity. Implications on the structure of some reflection nebulae are discussed. Also, the results suggest the existence of interstellar grains larger than usually accepted.

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