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      On the generation of compressible mirror-mode fluctuations in the inner heliosheath

      Fichtner, Horst; Kleimann, Jens; Yoon, Peter H.; Scherer, Klaus; Oughton, Sean; Engelbrecht, N. Eugene
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      2010.04264.pdf
      Submitted version, 1.011Mb
      DOI
       10.3847/1538-4357/abaf52
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      Fichtner, H., Kleimann, J., Yoon, P. H., Scherer, K., Oughton, S., & Engelbrecht, N. E. (2020). On the generation of compressible mirror-mode fluctuations in the inner heliosheath. Astrophysical Journal, 901(1). https://doi.org/10.3847/1538-4357/abaf52
      Permanent Research Commons link: https://hdl.handle.net/10289/14029
      Abstract
      Measurements made with the Voyager 1 spacecraft indicate that significant levels of compressive fluctuations exist in the inner heliosheath. Some studies have already been performed with respect to the mirror-mode instability in the downstream region close to the solar wind termination shock, and here we extend the investigation to the whole inner heliosheath. We employ quasilinear theory and results from a global magnetohydrodynamic model of the heliosphere to compute the time evolution of both the temperature anisotropy and the energy density of the corresponding magnetic fluctuations, and we demonstrate their likely presence in the inner heliosheath. Furthermore, we compute the associated, locally generated density fluctuations. The results can serve as inputs for future models of the transport of compressible turbulence in the inner heliosheath.
      Date
      2020
      Type
      Journal Article
      Publisher
      IOP Publishing Ltd
      Rights
      This is an author’s submitted version of an article published in the journal: Astrophysical Journal. © 2020 The American Astronomical Society.
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      • Computing and Mathematical Sciences Papers [1454]
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