9 papers
New Universal Relations for Magnetized Neutron Stars
Byon N. Jayawiguna, Siddarth Ajith, Takuya Katagiri +2
Unlike the neutron-star mass--radius relation, which depends sensitively on the internal stellar structure through the equation of state of dense nuclear matter, certain neutron-st…
Out-of-Equilibrium Effects in Non-Radial Relativistic Stellar Perturbations: A Model-Agnostic Formulation and Mode Analysis
Takuya Katagiri, Victor Guedes, Kent Yagi
We present a systematic, model-agnostic analysis of out-of-equilibrium effects, including viscosity and thermal conductivity, in non-radial oscillations of relativistic stars. Exte…
Higher-Derivative Corrections to Reissner--Nordström Black Holes from Worldline QFT
Siddarth Ajith, Ravisankar Rajagopal, Nur Rifat +2
In this paper we derived the corrections to the Reissner-Nordström black hole when higher-derivative terms (contractions of the Riemann tensor with the Maxwell field strengt…
Gravitational-Wave Constraints on Neutron-Star Pressure Anisotropy via Universal Relations
Victor Guedes, Siddarth Ajith, Shu Yan Lau +1
Neutron stars may exhibit pressure anisotropy arising from various physical mechanisms, such as elasticity, magnetic fields, viscosity, and superfluidity. We compute the tidal defo…
Spacetime Quasi-normal Mode Oscillations of Anisotropic Neutron Stars
Jihao Yu, Victor Guedes, Shu Yan Lau +2
Neutron star asteroseismology offers a unique opportunity to probe nuclear physics through stellar oscillations. Although the pressure inside of a neutron star is typically assumed…
Universal Relations for Elastic Hybrid Stars and Quark Stars
Chun-Ming Yip, Shu Yan Lau, Kent Yagi
Some compact stars may contain deconfined quark matter, forming hybrid stars or quark stars. If the quark matter forms an inhomogeneous condensate in the crystalline color supercon…