4.7 Article

Polar quasinormal modes of the scalarized Einstein-Gauss-Bonnet black holes

期刊

PHYSICAL REVIEW D
卷 102, 期 2, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.102.024086

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资金

  1. DFG [BL 1553, 1620]
  2. Emmy Noether Research Group - German Research Foundation (DFG) [DO 1771/1-1]
  3. Baden-Wurttemberg Stiftung
  4. University of Tubingen
  5. Bulgarian NSF [KP-06-H38/2, KP-06-H28/7]
  6. COST Actions [CA16104, CA15117]

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We study the polar quasinormal modes of spontaneously scalarized black holes in Einstein-Gauss-Bonnet theory. In previous works we showed that a set of nodeless solutions of the fundamental branch of the model studied in [D. D. Doneva and S. S. Yazadjiev, Phys. Rev. Lett. 120, 131103 (2018)] are stable under both radial [J. L. Blazquez-Salcedo et aL, Phys. Rev. D 98, 084011 (2018)] and axial perturbations [J. L. Blazquez-Salcedo et al., Phys. Rev. D 101, 104006 (2020)]. Here we calculate the polar quasinormal modes and show that this set of solutions is stable against the polar perturbations as well. Thus for a certain region of the parameter space the scalarized black holes are potentially stable physically interesting objects. The spectrum of the polar quasinormal modes differs both quantitatively and qualitatively from the Schwarzschild one which offers the possibility to test the Gauss-Bonnet theory via the future gravitational wave observations.

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