ϕ-modes of neutron stars in a massless scalar–tensor theory
Scalar–tensor theories allow for a rich spectrum of quasinormal modes of neutron stars. The presence of the scalar field allows for polar monopole and dipole radiation, as well as for additional higher multipole modes led by the scalar field. Herein, we present one family of the modes which are domi...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-10-01
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| Series: | Frontiers in Astronomy and Space Sciences |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fspas.2022.1005108/full |
| _version_ | 1798030475504123904 |
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| author | Jose Luis Blázquez-Salcedo Luis Manuel González-Romero Fech Scen Khoo Jutta Kunz Vincent Preut |
| author_facet | Jose Luis Blázquez-Salcedo Luis Manuel González-Romero Fech Scen Khoo Jutta Kunz Vincent Preut |
| author_sort | Jose Luis Blázquez-Salcedo |
| collection | DOAJ |
| description | Scalar–tensor theories allow for a rich spectrum of quasinormal modes of neutron stars. The presence of the scalar field allows for polar monopole and dipole radiation, as well as for additional higher multipole modes led by the scalar field. Herein, we present one family of the modes which are dominated by the scalar fields, the scalar-led ϕ-modes computed numerically with a shooting method, for the lowest multipoles, that is, l = 0, 1, and 2 for a massless scalar–tensor theory of the Brans–Dicke type, motivated by the R2 theory, and compare with those of a minimally coupled scalar field in general relativity. We consider a set of six realistic equations of state and extract universal relations for the modes. |
| first_indexed | 2024-04-11T19:42:08Z |
| format | Article |
| id | doaj.art-be998d23c61f4ee68092bdd5bbd5510c |
| institution | Directory Open Access Journal |
| issn | 2296-987X |
| language | English |
| last_indexed | 2024-04-11T19:42:08Z |
| publishDate | 2022-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Astronomy and Space Sciences |
| spelling | doaj.art-be998d23c61f4ee68092bdd5bbd5510c2022-12-22T04:06:41ZengFrontiers Media S.A.Frontiers in Astronomy and Space Sciences2296-987X2022-10-01910.3389/fspas.2022.10051081005108ϕ-modes of neutron stars in a massless scalar–tensor theoryJose Luis Blázquez-Salcedo0Luis Manuel González-Romero1Fech Scen Khoo2Jutta Kunz3Vincent Preut4Departamento de Física Teórica and IPARCOS, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Madrid, SpainDepartamento de Física Teórica and IPARCOS, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Madrid, SpainInstitute of Physics, University of Oldenburg, Oldenburg, GermanyInstitute of Physics, University of Oldenburg, Oldenburg, GermanyInstitute of Physics, University of Oldenburg, Oldenburg, GermanyScalar–tensor theories allow for a rich spectrum of quasinormal modes of neutron stars. The presence of the scalar field allows for polar monopole and dipole radiation, as well as for additional higher multipole modes led by the scalar field. Herein, we present one family of the modes which are dominated by the scalar fields, the scalar-led ϕ-modes computed numerically with a shooting method, for the lowest multipoles, that is, l = 0, 1, and 2 for a massless scalar–tensor theory of the Brans–Dicke type, motivated by the R2 theory, and compare with those of a minimally coupled scalar field in general relativity. We consider a set of six realistic equations of state and extract universal relations for the modes.https://www.frontiersin.org/articles/10.3389/fspas.2022.1005108/fullneutron starsgravitational wavesquasinormal modesscalar–tensor theoryequation of stateuniversal relations |
| spellingShingle | Jose Luis Blázquez-Salcedo Luis Manuel González-Romero Fech Scen Khoo Jutta Kunz Vincent Preut ϕ-modes of neutron stars in a massless scalar–tensor theory Frontiers in Astronomy and Space Sciences neutron stars gravitational waves quasinormal modes scalar–tensor theory equation of state universal relations |
| title | ϕ-modes of neutron stars in a massless scalar–tensor theory |
| title_full | ϕ-modes of neutron stars in a massless scalar–tensor theory |
| title_fullStr | ϕ-modes of neutron stars in a massless scalar–tensor theory |
| title_full_unstemmed | ϕ-modes of neutron stars in a massless scalar–tensor theory |
| title_short | ϕ-modes of neutron stars in a massless scalar–tensor theory |
| title_sort | ϕ modes of neutron stars in a massless scalar tensor theory |
| topic | neutron stars gravitational waves quasinormal modes scalar–tensor theory equation of state universal relations |
| url | https://www.frontiersin.org/articles/10.3389/fspas.2022.1005108/full |
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