Analysis of SN 1987A polarimetry

Details Analysis of SN 1987A polarimetry Analysis of SN 1987A polarimetry

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...375..264j&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 375, July 1, 1991, p. 264-287. Research supported by University of Oklahoma

Astronomy and Astrophysics

Astrophysics

55

Polarimetry, Radiative Transfer, Supernova 1987A, Astronomical Models, Electron Scattering, Time Dependence

Scientific paper

Models and a polarized radiative transfer technique useful for analyzing the SN 1987A polarimetric data are introduced and discussed. Demonstration results calculated using the models are presented. An interstellar polarization correction needed for analyzing the SN 1987A polarimetric data is introduced. A summary and interpretation of the evolution of the SN 1987A polarization that relies on this correction is given. An analysis of a small selection of the SN 1987A polarimetry is reported. The important conclusions of this analysis are that the SN 1987A continuum polarization and line polarization features are mostly due to the polarizing effect of electron scattering and that there is probably an excitation asymmetry in SN 1987A. An interpretation of the SN 1987A polarimetric data in terms of simple shape asymmetry requires that SN 1987A have a length-width difference of order 10 percent or more.

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