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Title:
An X-ray study of two Crablike supernova remnants - 3C 58 and CTB 80
Authors:
Becker, R. H.; Helfand, D. J.; Szymkowiak, A. E.
Affiliation:
AA(Columbia University, New York, NY), AB(Columbia University, New York, NY), AC(NASA, Goddard Space Flight Center, Greenbelt; Maryland, University, Baltimore, MD)
Publication:
Astrophysical Journal, Part 1, vol. 255, Apr. 15, 1982, p. 557-563. (ApJ Homepage)
Publication Date:
04/1982
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
CRAB NEBULA, SUPERNOVA REMNANTS, X RAY ASTRONOMY, NEUTRON STARS
Comment:
A&AA ID. AAA031.125.010
DOI:
10.1086/159857
Bibliographic Code:
1982ApJ...255..557B

Abstract

The instruments on the Einstein Observatory have been used to study the X-ray properties of two Crablike SNRs: 3C 58 and CTB 80. Images of the objects are similar, showing an extended plateau of emission surrounding a pronounced central maximum consistent with the presence of a point source. The X-ray spectrum of 3C 58 is consistent with a power law of spectral index 0.5 + 0.5 or -0.2 modified by absorption in a hydrogen column density NH of (2 + or - 0.5) x 10 to the 21st/sq cm. These data suggest an analogy with the Crab Nebula, where the extended X-ray emission is nonthermal and the pointlike emission emanates from a central neutron star. Quantitative comparisons of the X-ray and radio properties for six Crablike remnants indicate significant differences which may reflect an evolutionary sequence.

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