Current loop models for the circumstellar matter in SN 1987A

Author

Goldstein, S.J., Jr.

Author_Institution

Dept. of Astron., Virginia Univ., Charlottesville, VA, USA

Volume

20

Issue

6

fYear

1992

fDate

12/1/1992 12:00:00 AM

Firstpage

874

Lastpage

876

Abstract

Some properties of current-loop models are explored, and some implications are discussed. The elliptical ring observed to be centered on the supernova can be interpreted as light from ions trapped in the magnetic field of a circular current loop. The current is 1.5×10 ¹² A for a model where gravitational force on 0.03 solar masses of trapped matter balances the electrodynamic expansion of the loop. The magnetic energy of the loop is 2×10⁴¹ erg. Consideration of the magnetized clouds in the solar wind as an analogous source for such a loop leads to the conclusion that the loop formed over the lifetime of the progenitor star

Keywords

Large Magellanic Cloud; circumstellar shells; interstellar magnetic fields; supernovae; 1.5E12 A; LMC; SN 1987A; circumstellar matter; current-loop models; electrodynamic expansion; elliptical ring; gravitational force; interstellar magnetism; magnetic energy; magnetic field; progenitor star; supernova; Conductors; Large-scale systems; Lorentz covariance; Magnetic anisotropy; Magnetic fields; Magnetic flux; Magnetization; Perpendicular magnetic anisotropy; Plasmas; Tin;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.199541

Filename

199541