Meeting of Young Astronomers and Astrophysicists - FIKUT NEXTGEN

Early inspiral higher harmonics and Einstein Telescope geometry

6 Nov 2026, 15:00

15m

HUN-REN Wigner Research Centre for Physics

Compact Objects, Relativistic Astrophysics, and Gravitational Waves

Speaker

Kata Karácsonyi (University of Szeged & HUN-REN Wigner RCP)

Description

Higher harmonics from asymmetric compact binaries may enter the Einstein Telescope’s observing band before the dominant quadrupole signal. This ext the interval over which Earth’s rotation changes the detector response. We examine how much noise-weighted signal accumulates during this earlier interval, comparing a triangular detector in the Euregio Meuse–Rhine region with two pairs of L-shaped detectors at Sardinia–Meuse–Rhine and Sardinia–Lusatia. By accounting for Earth’s rotation, we investigate how detector geometry affects the observable early signal. This provides a quantitative starting point for assessing the harmonics’ contribution to early source characterization.