g-mode oscillations in neutron stars with hyperons
g-mode oscillations in neutron stars with hyperons
A common alternative to the standard assumption of nucleonic composition of matter in the interior of a neutron star is to include strange baryons, particularly hyperons. Any change in composition of the neutron star core has an effect on g-mode oscillations of neutron stars, through the compositional dependence of the equilibrium and adiabatic sound speeds. We study the core g-modes of a neutron star contaning hyperons, using a variety of relativistic mean field models of dense matter that satisfy observational constraints on global properties of neutron stars. Our selected models predict a sharp rise in the g-mode frequencies upon the onset of strange baryons. Should g-modes be observed in the near future, their frequency could be used to test the presence of hyperonic matter in the core of neutron stars.
nucl-th, astro-ph.HE
Tran, Vinh
bc84faa5-d518-4c43-a431-6a6ae47d3049
Ghosh, Suprovo
4408b6bd-fbf0-4ed7-a446-e602f5cca92d
Lozano, Nicholas
45ca21db-04df-45d5-a932-b473cf70c536
Chatterjee, Debarati
3e5440bf-b6de-40db-9bd5-b277f1112c2d
Jaikumar, Prashanth
56b18f42-61ef-4b9d-bda6-b39b5e7d6eb2
14 July 2023
Tran, Vinh
bc84faa5-d518-4c43-a431-6a6ae47d3049
Ghosh, Suprovo
4408b6bd-fbf0-4ed7-a446-e602f5cca92d
Lozano, Nicholas
45ca21db-04df-45d5-a932-b473cf70c536
Chatterjee, Debarati
3e5440bf-b6de-40db-9bd5-b277f1112c2d
Jaikumar, Prashanth
56b18f42-61ef-4b9d-bda6-b39b5e7d6eb2
Tran, Vinh, Ghosh, Suprovo, Lozano, Nicholas, Chatterjee, Debarati and Jaikumar, Prashanth
(2023)
g-mode oscillations in neutron stars with hyperons.
Physical Review C, 108 (1), [015803].
(doi:10.1103/PhysRevC.108.015803).
Abstract
A common alternative to the standard assumption of nucleonic composition of matter in the interior of a neutron star is to include strange baryons, particularly hyperons. Any change in composition of the neutron star core has an effect on g-mode oscillations of neutron stars, through the compositional dependence of the equilibrium and adiabatic sound speeds. We study the core g-modes of a neutron star contaning hyperons, using a variety of relativistic mean field models of dense matter that satisfy observational constraints on global properties of neutron stars. Our selected models predict a sharp rise in the g-mode frequencies upon the onset of strange baryons. Should g-modes be observed in the near future, their frequency could be used to test the presence of hyperonic matter in the core of neutron stars.
Text
2212.09875v1
- Author's Original
More information
Accepted/In Press date: 22 June 2023
Published date: 14 July 2023
Additional Information:
17 pages, 7 figures
Keywords:
nucl-th, astro-ph.HE
Identifiers
Local EPrints ID: 501006
URI: http://eprints.soton.ac.uk/id/eprint/501006
ISSN: 0556-2813
PURE UUID: 0fb7d242-37df-4c2b-b4e4-380f31d101fc
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Date deposited: 20 May 2025 17:05
Last modified: 22 May 2025 02:14
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Contributors
Author:
Vinh Tran
Author:
Suprovo Ghosh
Author:
Nicholas Lozano
Author:
Debarati Chatterjee
Author:
Prashanth Jaikumar
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