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Σ(D)-Dependence of SNR in a cloudy interstellar medium and regular Z-effect
Critical analysis of the earlier obtained Sigma(D)-dependences in the light of new observational data on the interaction of SNR expanding envelopes with inhomogeneities of interstellar medium is carried out. It is shown that more correct consideration of the factors which are the basis of Z-effect i...
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Published in: | Astrophysics and space science 1983-12, Vol.97 (2), p.287-303 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | Critical analysis of the earlier obtained Sigma(D)-dependences in the light of new observational data on the interaction of SNR expanding envelopes with inhomogeneities of interstellar medium is carried out. It is shown that more correct consideration of the factors which are the basis of Z-effect introduction testifies to the dominating role of interstellar medium cloudiness, which completely suppresses the influence of the regular component of the medium. On the basis of the most reliable calibrators, the latest observations, and theoretical notions of evolution, a new Sigma(D)-dependence for shell type SNR in a cloudy interstellar medium is obtained. On the basis of dependence diameter distance from the sun, and height over the galactic plane for about 100 shell type SNR at two frequencies, 408 MHz and 1 GHz are calculated. |
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ISSN: | 0004-640X 1572-946X |
DOI: | 10.1007/BF00653487 |