The Gravitational Wave Memory from Binary Neutron Star Mergers
ORAL
Abstract
The gravitational wave signal produced by the merger of two compact objects includes both an oscillatory transient and a non-oscillatory part, the so-called memory effect. This produces a permanent displacement of test masses and has not yet been measured. We use general relativistic magnetohydrodynamic simulations, including neutrinos, with several representative viable equations of state, to quantify--for the first time--the effects of the neutron star magnetic field, neutrino emission, and the ejected mass on the linear and nonlinear displacement memory in binary neutron star mergers.
*This work was supported in part by National Science Foundation (NSF) Grants No. PHY-2308242, No. OAC-2310548 and No. PHY-2006066 to the University of Illinois at Urbana-Champaign; and PHY-1653374 to Montclair State University; as well as by the Generalitat Valenciana Grant CIDEGENT/2021/046 and by the Spanish Agencia Estatal de Investigacion (Grant PID2021-125485NB-C21).
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Publication: arXiv:2510.09742
Presenters
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Antonios Tsokaros
- University of Illinois at Urbana-Champaign