Gravitational wave seismology of charged strange stars in the Cowling approximation: the fluid pulsation modes

Abstract

In this work we study, within the framework of Cowling approximation, the effect of the electric charge on the gravitational wave frequency of fluid oscillation modes of strange quark stars. For this purpose, the dense matter of the stellar fluid is described by the MIT bag model equation of state (EoS), while for the electric charge profile, we consider that the electric charge density is proportional to the energy density. We find that the gravitational wave frequencies change with the increment of electric charge; these effects are more noticeable at higher total mass values. We obtain that the $f$-mode is very sensitive to the change in the electric charge of the star. Furthermore, in the case of the $p_1$ mode, the effect of the electric charge is not very significant. Our results reveal that the study of the fundamental pulsation mode of an electrically charged compact star is very important in distinguishing whether compact stars could contain electric charge. We also employ another electric charge distribution profile that follows a power law, and it is found that the $f$-mode change is more noticeable than the $p_1$-mode when the electric charge is incremented.

11 pages, 6 figures and 1 table

References in corpus (20)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Multi-messenger Observations of a Binary Neutron Star Merger
• GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
• GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence
• A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
• Neutron Star Asteroseismology. Axial Crust Oscillations in the Cowling Approximation
• Non-radial oscillations of anisotropic neutron stars in the Cowling approximation
• Signatures of hadron-quark mixed phase in gravitational waves
• Phase transitions in neutron stars and their links to gravitational waves
• Impacts of dark matter on the $f$-mode oscillation of hyperon star
• Discontinuity gravity modes in hybrid stars: assessing the role of rapid and slow phase conversions
• Non-radial Oscillation Modes of Compact Stars with a Crust
• One possible solution of peculiar type Ia supernovae explosions caused by a charged white dwarf
• Nonradial oscillations of slowly and differentially rotating compact stars
• Electrically charged strange stars with an interacting quark matter equation of state
• Fluid pulsation modes and tidal deformability of anisotropic strange stars in light of the GW$170817$ event
• Stellar Structure and Stability of Charged Interacting Quark Stars and Their Scaling Behaviour
• Normal oscillation modes and radial stability of neutron stars with a dark-energy core from the Chaplygin gas
• Fluid pulsation modes from strange stars in a higher-dimensional space-time
• Fundamental-mode eigenfrequencies of neutral and charged twin neutron stars