Inferring Fundamental Spacetime Symmetries with Gravitational-Wave Memory

From LISA to the Einstein Telescope

authored by

Boris Goncharov, Laura Donnay, Jan Harms

Abstract

We revisit gravitational wave (GW) memory as the key to measuring spacetime symmetries, extending beyond its traditional role in GW searches. In particular, we show how these symmetries may be probed via displacement and spin memory observations, respectively. We further find that the Einstein Telescope's (ET) sensitivity enables constraining the strain amplitude of a displacement memory to 2% and that of spin memory to 22%. Finally, we point out that neglecting memory could lead to an overestimation of measurement uncertainties for parameters of binary black hole (BBH) mergers by about 10% in ET.

Organisation(s)

Institute of Gravitation Physics

External Organisation(s)

Gran Sasso Science Institute
Istituto Nazionale di Fisica Nucleare (INFN)
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
Scuola Internazionale Superiore di Studi Avanzati

Type

Article

Journal

Physical review letters

Volume

132

No. of pages

7

ISSN

0031-9007

Publication date

13.06.2024

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Physics and Astronomy

Electronic version(s)

https://doi.org/10.48550/arXiv.2310.10718 (Access: Open)
https://doi.org/10.1103/PhysRevLett.132.241401 (Access: Closed)