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Σ(D)-dependence of SNR in a cloudy interstellar medium and regularZ-effect

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Abstract

Critical analysis of the earlier obtained Σ(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 ofZ-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 most reliable calibrators and on the last observations, theoretical notions of evolution, new Σ(D)-dependence for shell type SNR in a cloudy interstellar medium is obtained.

On the basis of this dependence diametersD, distances from the Sund and height over the galactic planeZ for ∼100 shell type SNR at two frequencies, 408 MHz and 1 GHz are calculated.

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Authors and Affiliations

  1. Institute of Physics, Academy of Sciences, Baku, U.S.S.R.

    A. O. Allakhverdiyev, O. H. Guseinov, F. K. Kasumov & I. M. Yusifov

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  1. A. O. Allakhverdiyev
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  2. O. H. Guseinov
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  3. F. K. Kasumov
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  4. I. M. Yusifov
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Allakhverdiyev, A.O., Guseinov, O.H., Kasumov, F.K. et al. Σ(D)-dependence of SNR in a cloudy interstellar medium and regularZ-effect. Astrophys Space Sci 97, 287–302 (1983). https://doi.org/10.1007/BF00653487

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  • DOI: https://doi.org/10.1007/BF00653487

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