Repositorio UFRO · Omeka S

Radial oscillations of dark matter admixed neutron stars

Primer Autor	Kumar, Bharat
Co-autores	Routaray, Pinku Das, H. C. Sen, Souhardya Panotopoulos, Grigoris Zhao, Tianqi
Título	Radial oscillations of dark matter admixed neutron stars
Editorial	AMER PHYSICAL SOC
Revista	PHYSICAL REVIEW D
Lenguaje	en
Resumen	Within the relativistic mean-field model, we investigate the properties of dark matter (DM) admixed neutron stars, considering nonrotating objects made of isotropic matter. We adopt the IOPB-I hadronic equation of state (EOS) by assuming that the fermionic DM within supersymmetric models has already been accreted inside the neutron star (NS). The impact of DM on the mass-radius relationships and the radial oscillations of pulsating DM admixed neutron stars (with and without the crust) are explored. It is observed that the presence of DM softens the EOS, which in turn lowers the maximum mass and its corresponding radius. Moreover, adding DM results in higher frequencies of pulsating objects, and hence we show the linearity of the fundamental mode frequency of canonical NS with DM Fermi momentum. We also investigate the profile of eigenfunctions solving the Sturm-Liouville boundary value problem and verify its validity. Further, we study the stability of NSs considering the fundamental mode frequency variation with the mass of the star and verify the stability criterion partial differential M/ partial differential rho c > 0. Finally, the effect of the crust on the large frequency separation for different DM Fermi momenta is shown as well.
Fecha Publicación	2023
Tipo de Recurso	artículo original
doi	10.1103/PhysRevD.107.103039
Formato Recurso	PDF
Palabras Claves	Dark matter Gravitational waves Nuclear astrophysics Nuclear matter in neutron stars
Ubicación del archivo	http://dx.doi.org/10.1103/PhysRevD.107.103039
Categoría OCDE	Astronomía y Astrofísica Física
Materias	Materia oscura Ondas gravitacionales Astrofísica nuclear Materia nuclear en estrellas de neutrones
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
Derechos de acceso	metadata
Access Rights	metadata
Id de Web of Science	WOS:000999454300005
ISSN	2470-0010
Tipo de ruta	verde
Categoría WOS	Astronomía y Astrofísica Física
Referencia del Financiador (Mandatado si es aplicable-repetible)	DST CRG/2021/000101 DAE DE-FG02- 93ER40756