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Polarimetric Properties of Halley’s Dust

Published online by Cambridge University Press:  12 April 2016

A.K. Sen ,
M.R. Deshpande  and
U.C. Joshi
A.K. Sen
Affiliation:
Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India
M.R. Deshpande
Affiliation:
Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India
U.C. Joshi
Affiliation:
Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India

Abstract:

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Comet P/Halley was observed polarimetrically for seven nights in IHW and other continuum filters, during the pre and post perihelion passages. The polarimetric observations have been combined with the observations taken by other investigators, to get a complete picture of phase angle and wavelength dependence of polarization of comet P/Halley. Assuming Mie type scattering by cometary grains, the observed polarization data were fitted for a set of complex refractive indices which are (1.387, .032), (1.375, .040) and (1.374, .052) at .365, .484 and .684μm respectively.

Type
Cometary Dust: Observations and Evolution
Information
International Astronomical Union Colloquium , Volume 126: Origin and Evolution of Interplanetary Dust , 1991 , pp. 285 - 288
Copyright
Copyright © Kluwer 1991

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