Mode stability of a near-extremal Kerr superspinar
arXiv preprint arXiv:1911.06169, 2019•arxiv.org
We study here the quasi-normal mode stability of a near-extremal Kerr superspinar, an
exotic spinning compact object that exceeds the Kerr bound, under gravitational
perturbations. Despite previous beliefs that these objects would be mode unstable, we show
by analytically treating the Teukolsky equations that these objects are in fact mode stable
under almost all (barring a zero-measure set) boundary conditions.
exotic spinning compact object that exceeds the Kerr bound, under gravitational
perturbations. Despite previous beliefs that these objects would be mode unstable, we show
by analytically treating the Teukolsky equations that these objects are in fact mode stable
under almost all (barring a zero-measure set) boundary conditions.
We study here the quasi-normal mode stability of a near-extremal Kerr superspinar, an exotic spinning compact object that exceeds the Kerr bound, under gravitational perturbations. Despite previous beliefs that these objects would be mode unstable, we show by analytically treating the Teukolsky equations that these objects are in fact mode stable under almost all (barring a zero-measure set) boundary conditions.
arxiv.org
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