Hao-Jui Kuan

Celephais: efficient spectral initial data code for precessing compact binaries

Hao-Jui Kuan

Large numerical-relativity surveys require compact-binary initial data that are both spectrally accurate and inexpensive to construct, including for systems with unequal masses and misaligned spins. We present \celephais, a compact-object initial-data code built on the \texttt{Kadath} spectral library, that constructs binary-neutron-star and …

Difference between quark stars and neutron stars in universal relations and their effect on gravitational waves

Anonymous, Hao-Jui Kuan, Yurui Zhou, Zhiqiang Miao et autres

cn, us, de (code pays fourni par la source)

Donutization Inside Neutron Stars: Shell-Localized Scalar Fields

Hao-Jui Kuan, Alan Tsz-Lok Lam, Jacquelyn Noronha-Hostler, Nicolas Yunes

Heavy scalar fields ($m_ϕ\gtrsim10^{-9}$ eV) in scalar-tensor gravity are expected to be hidden from neutron-star observations because their Compton wavelength is sub-stellar. We show that neutron stars can nevertheless scalarize by forming a shell-localized profile, suppressed at their center and exterior but …

Donutization Inside Neutron Stars: Shell-Localized Scalar Fields

Hao-Jui Kuan, Alan Tsz-Lok Lam, Jacquelyn Noronha-Hostler, Nicolas Yunes

Heavy scalar fields ($m_ϕ\gtrsim10^{-9}$ eV) in scalar-tensor gravity are expected to be hidden from neutron-star observations because their Compton wavelength is sub-stellar. We show that neutron stars can nevertheless scalarize by forming a shell-localized profile, suppressed at their center and exterior but …

us (code pays fourni par la source)

The Science of the Einstein Telescope

Einstein Telescope collaboration, Adrian Abac, Raul Abramo, Simone Albanesi et autres

Einstein Telescope (ET) is the European project for a gravitational-wave (GW) observatory of third-generation. In this paper we present a comprehensive discussion of its science objectives, providing state-of-the-art predictions for the capabilities of ET in both geometries currently under consideration, a single-site …

The Science of the Einstein Telescope

Einstein Telescope collaboration, Adrian Abac, Raul Abramo, Simone Albanesi et autres

Difference between quark stars and neutron stars in universal relations and their effect on gravitational waves

Duanyuan Gao, Hao-Jui Kuan, Yurui Zhou, Zhiqiang Miao et autres

We calculate the $f$-mode frequency and tidal overlap of quark stars using the full general relativity method. We verify the universal relations obtained from conventional neutron stars in the case of quark stars and explore the cases with different values of parameters …

Difference between quark stars and neutron stars in universal relations and their effect on gravitational waves

Duanyuan Gao, Hao-Jui Kuan, Yurui Zhou, Zhiqiang Miao et autres

We calculate the $f$-mode frequency and tidal overlap of quark stars using the full general relativity method. We verify the universal relations obtained from conventional neutron stars in the case of quark stars and explore the cases with different values of parameters …

cn, us, de, kp (code pays fourni par la source)

Nonradial oscillations of stratified neutron stars with solid crusts: Mode characterization and tidal resonances in coalescing binaries

Yong Gao, Hao-Jui Kuan, Cheng-Jun Xia, Hector O. Silva et autres

Dynamical tides of neutron stars in the late stages of binary inspirals provide a viable probe into dense matter through gravitational waves and potentially trigger electromagnetic precursors. We model the tidal response as a set of driven harmonic oscillators, where the natural …

de, cn, us, jp (code pays fourni par la source)

Nonlinear saturation of gravito-inertial modes excited by tidal resonances in binary neutron stars

Alexis Reboul-Salze, Aurélie Astoul, Hao-Jui Kuan, Arthur George Suvorov

Context. During the last seconds of a binary neutron-star merger, the tidal force can excite stellar oscillation modes to large amplitudes. From the perspective of premerger electromagnetic emissions and next-generation gravitational wave (GW) detectors, gravity ( g -) modes constitute a propitious …

de, gb, es, uz (code pays fourni par la source)

Tidal Resonance in Binary Neutron Star Inspirals: A High-Precision Study in Numerical Relativity

Hao-Jui Kuan, Kenta Kiuchi, Masaru Shibata

We investigate the tidal resonance of the fundamental (f) mode in spinning neutron stars, robustly tracing the onset of the excitation to its saturation, using numerical relativity for the first time. We performed long-term (≈15 orbits) fully relativistic simulations of a merger …

de, jp, es (code pays fourni par la source)

Nonradial oscillations of stratified neutron stars with solid crusts: Mode characterization and tidal resonances in coalescing binaries

Yong Gao, Hao-Jui Kuan, Cheng-Jun Xia, Hector O. Silva et autres

Dynamical tides of neutron stars in the late stages of binary inspirals provide a viable probe into dense matter through gravitational waves, and potentially trigger electromagnetic precursors. We model the tidal response as a set of driven harmonic oscillators, where the natural …