{
  "id": "1411.3559",
  "version": "v1",
  "published": "2014-11-13T14:43:32.000Z",
  "updated": "2014-11-13T14:43:32.000Z",
  "title": "Gravito-inertial modes in a differentially rotating spherical shell",
  "authors": [
    "Giovanni M. Mirouh",
    "Clément Baruteau",
    "Michel Rieutord",
    "Jérôme Ballot"
  ],
  "comment": "2 pages, 1 figure. Proceedings of the CoRoT Symposium 3 / Kepler KASC-7 joint meeting, Toulouse, 7-11 July 2014. To be published by EPJ Web of Conferences",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "While many intermediate- and high-mass main sequence stars are rapidly and differentially rotating, the effects of rotation on oscillation modes are poorly known. In this communication we present a first study of axisymmetric gravito-inertial modes in the radiative zone of a differentially rotating star. We consider a simplified model where the radiative zone of the star is a linearly stratified rotating fluid within a spherical shell, with differential rotation due to baroclinic effects. We solve the eigenvalue problem with high-resolution spectral computations and determine the propagation domain of the waves through the theory of characteristics. We explore the propagation properties of two kinds of modes: those that can propagate in the entire shell and those that are restricted to a subdomain. Some of the modes that we find concentrate kinetic energy around short-period shear layers known as attractors. We describe various geometries for the propagation domains, conditioning the surface visibility of the corresponding modes.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-11-13T14:43:32.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "differentially rotating spherical shell",
      "high-mass main sequence stars",
      "propagation domain",
      "concentrate kinetic energy",
      "short-period shear layers"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 2,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}