TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysCore.8.2.042
TI  - Tidal effects in gravitational waves from neutron stars in scalar-tensor theories of gravity
PY  - 2025/05/22
UR  - https://scipost.org/SciPostPhysCore.8.2.042
JF  - SciPost Physics Core
JA  - SciPost Phys. Core
VL  - 8
IS  - 2
SP  - 042
A1  - Creci, Gastón
AU  - van Gemeren, Iris
AU  - Hinderer, Tanja
AU  - Steinhoff, Jan
AB  - We compute tidal signatures in the gravitational waves (GWs) from neutron star binary inspirals in scalar-tensor gravity, where the dominant adiabatic even-parity tidal interactions involve three types of Love numbers that depend on the matter equation of state and parameters of the gravitational theory. We calculate the modes of the GW amplitudes and the phase evolution in the time and frequency domain, working up to first order in the post-Newtonian and small finite-size approximations. We also perform several case studies to quantify the dipolar and quadrupolar tidal effects and their parameter dependencies specialized to Gaussian couplings. We show that various tidal contributions enter with different signs and scalings with frequency, which generally leads to smaller net tidal GW imprints than for the same binary system in General Relativity.
ER  -

@Article{10.21468/SciPostPhysCore.8.2.042,
	title={{Tidal effects in gravitational waves from neutron stars in scalar-tensor theories of gravity}},
	author={Gastón Creci and Iris van Gemeren and Tanja Hinderer and Jan Steinhoff},
	journal={SciPost Phys. Core},
	volume={8},
	pages={042},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCore.8.2.042},
	url={https://scipost.org/10.21468/SciPostPhysCore.8.2.042},
}