Universal relations for quasinormal modes of neutron stars in $R^2$ gravity
| Autor: | Jose Luis Blázquez-Salcedo, Luis Manuel González-Romero, Fech Scen Khoo, Jutta Kunz, Vincent Preut |
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| Rok vydání: | 2022 |
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| DOI: | 10.48550/arxiv.2205.03283 |
| Popis: | We construct quasinormal modes for neutron stars in $R^2$ gravity in the Einstein frame, considering scalar masses in the sub-neV range. In particular, we investigate the fundamental quadrupole fluid f-modes and the dipole fluid F-modes. Employing six equations of state covering matter content with nucleons, hyperons, and quarks, we then propose universal relations for the quadrupole f-modes and dipole F-modes. The dipole F-modes are ultra-long lived and, for the lower scalar masses, their frequencies are inversely proportional to the corresponding Compton wavelength. Comment: 25 pages, 23 figures; Some figures updated |
| Databáze: | OpenAIRE |
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