Polarimetry of Comet p/ Halley

Details Polarimetry of Comet p/ Halley Polarimetry of Comet p/ Halley

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...187..689h&link_type=abstract

Astronomy and Astrophysics, Vol.187, NO. 1+2/NOV, P. 689, 1987

Astronomy and Astrophysics

Astrophysics

19

Scientific paper

The linear polarization P of comet P/Halley was observed simultaneously at eight wavelengths ranging from 0.36 to 0.90 μm, for phase angles α (sun-comet-earth angle) between 2° and 65°. In addition, observations in the J and H bands were made for α = 30°. In the continuum bands, we have obtained (i) negative polarization for α < 20°, (ii) a quasi-linear increase of the polarization level with phase angle for 20° < α < 50°, and (iii) a slight increase of P with wavelength from the visible through to the near infrared.

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