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Title:
Structure of the Crab Nebula - Intensity and polarization at 20 CM
Authors:
Velusamy, T.
Affiliation:
AA(Tata Institute of Fundamental Research, Ootacamund, India)
Publication:
Royal Astronomical Society, Monthly Notices (ISSN 0035-8711), vol. 212, Jan. 15, 1985, p. 359-365. (MNRAS Homepage)
Publication Date:
01/1985
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
CRAB NEBULA, OPTICAL POLARIZATION, RADIO ASTRONOMY, RADIO EMISSION, ASTRONOMICAL MAPS, BRIGHTNESS DISTRIBUTION, DEPOLARIZATION
Bibliographic Code:
1985MNRAS.212..359V

Abstract

VLA maps of the Crab Nebula at 20 cm with high dynamic range and resolution 15×15 arcsec2 are presented. These maps show enhanced radio emission associated with optical filaments and an excellent correlation between depolarization at 20 cm and the bright optical filaments on the near side of the nebula. The overall structure of the radio emission is discussed, in particular the possibility that a circum-nebular remnant shell coincides with the outer boundary of the Crab Nebula.

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