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The Secular Behavior of X-Ray and Radio Emission from Supernova Remnants

Published online by Cambridge University Press:  07 February 2017

Wallace H. Tucker
Wallace H. Tucker*
Affiliation:
American Science and Engineering, Cambridge, Mass., U.S.A.

Abstract

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Continuous injection models for the secular behavior of the radio and X-ray emission from supernova remnants are examined and compared with the observations. Among other things, it is concluded that (1) continuous injection probably occurs for at least 10 yr in every case and about 1000 yr in most supernova remnants, in which case the supernova remnants 3C392, W28, Pup A and IC443 should produce 1–10 keV X-ray fluxes ≈ 10-10 ergs/cm2-sec, and (2) the X-ray sources in the Crab Nebula, Cas A and Tycho can be explained in terms of a model wherein continuous injection occurs for 300 yr for the Crab Nebula, much less than 250 yr for Cas A and much longer than 400 yr for Tycho. Finally, it is shown that if Tycho and Cas A contain an X-ray star such as NP 0532, it is quite possible that the X-ray emission from those sources is predominantly due to the X-ray star.

Type
Session 4
Information
Symposium - International Astronomical Union , Volume 46: The Crab Nebula , 1971 , pp. 268 - 272
Copyright
Copyright © Reidel 1971 

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