Transonic canards and stellar wind

Paul Carter, Edgar Knobloch, Martin Wechselberger

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Parker's classical stellar wind solution [20] describing steady spherically symmetric outflow from the surface of a star is revisited. Viscous dissipation is retained. The resulting system of equations has slow-fast structure and is amenable to analysis using geometric singular perturbation theory. This technique leads to a reinterpretation of the sonic point as a folded saddle and the identification of shock solutions as canard trajectories in space [22]. The results shed light on the location of the shock and its sensitivity to the system parameters. The related spherically symmetric stellar accretion solution of Bondi [4] is described by the same theory.

Original languageEnglish (US)
Pages (from-to)1006-1033
Number of pages28
JournalNonlinearity
Volume30
Issue number3
DOIs
StatePublished - Jan 25 2017
Externally publishedYes

Keywords

  • canard
  • geometric singular perturbation theory
  • stellar wind
  • transonic flows
  • viscous gas flow

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    Carter, P., Knobloch, E., & Wechselberger, M. (2017). Transonic canards and stellar wind. Nonlinearity, 30(3), 1006-1033. https://doi.org/10.1088/1361-6544/aa5743