Temperature Effects on Core g-modes of Neutron Stars

Abstract

Neutron stars provide a unique physical laboratory to study the properties of matter at high density. We study a diagnostic of the composition of high-density matter, namely, g-mode oscillations, which are driven by buoyancy forces. These oscillations can be excited by tidal forces and couple to gravitational waves. We extend prior results for the g-mode spectrum of cold neutron star matter to temperatures that are expected to be achieved in neutron star mergers using a parameterization for finite-temperature effects recently proposed by Raithel, Özel and Psaltis. We find that the g-modes of canonical mass neutron stars ($\approx$1.4$M_{\odot }$) are suppressed at high temperature, and core $g$-modes are supported only in the most massive ($\ge$2$M_{\odot }$) of hot neutron stars.

arXiv comment8 pages, 4 figures

References in corpus (31)

• The equation of state for nucleon matter and neutron star structure
• GW170817: Measurements of Neutron Star Radii and Equation of State
• Quasi-Normal Modes of Stars and Black Holes
• Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
• Relativistic Equation of State of Nuclear Matter for Supernova and Neutron Star
• Core-collapse supernova equations of state based on neutron star observations
• Tidal Deformabilities and Radii of Neutron Stars from the Observation of GW170817
• Statistical Model for a Complete Supernova Equation of State
• Constraining the Symmetry Parameters of the Nuclear Interaction
• Resonant Oscillations and Tidal Heating in Coalescing Binary Neutron Stars
• Neutron matter from chiral effective field theory interactions
• The inverse problem for pulsating neutron stars: A ``fingerprint analysis'' for the supranuclear equation of state
• Limiting masses and radii of neutron stars and their implications
• Density Discontinuity of a Neutron Star and Gravitational Waves
• Quarkyonic Matter Equation of State in Beta-Equilibrium
• Gravitational-Wave Asteroseismology with Fundamental Modes from Compact Binary Inspirals
• Thermal properties of hot and dense matter with finite range interactions
• Quasiparticle Theory of Transport Coefficients for Hadronic Matter at Finite Temperature and Baryon Density
• Universal Relations for Neutron Star F-Mode and G-Mode Oscillations
• Finite-temperature extension for cold neutron star equations of state
• Secular Instability of g-Modes in Rotating Neutron Stars
• Constraining color flavor locked strange stars in the gravitational wave era
• Oscillation modes of hybrid stars within the relativistic Cowling approximation
• Effect of hyperons on f-mode oscillations in Neutron Stars
• g-mode Oscillations in Hybrid Stars: A Tale of Two Sounds
• Effects of short-range correlation reduced kinetic symmetry energy in heavy-ion collisions at intermediate energies
• Discontinuity gravity modes in hybrid stars: assessing the role of rapid and slow phase conversions
• Composition temperature-dependent g-modes in superfluid neutron stars
• $g$-modes of neutron stars with hadron-to-quark crossover transitions
• Quasi-normal g-modes of neutron stars with quarks
• Identifying the QCD Phase Transitions via the Gravitational Wave Frequency

Cited by in corpus (10)

• Framework for phase transitions between the Maxwell and Gibbs constructions
• Impact of Symmetry Energy on Sound Speed and Spinodal Decomposition in Dense Neutron-Rich Matter
• Universal relations for compact stars with exotic degrees of freedom
• Effects of inner crusts on $g$-mode oscillations in neutron stars
• Neutron-star seismology with realistic, finite-temperature nuclear matter
• Suppression of composition $g$-modes in chemically-equilibrating warm neutron stars
• Constraining the $f$-mode oscillations frequency in Neutron Stars through Universal Relations in the realm of Energy-Momentum Squared Gravity
• $f$ and $p$ mode oscillation of proto-neutron stars with systematic variation of the nucleon effective mass
• Modification of the universal relation between mass, radius and nonradial $f$-mode oscillation in proto-neutron stars
• Investigating Universal Relations in Compact Stars featuring $\Delta -$Admixed Exotic Dense Matter