Resonant amplification of multimessenger emission in rotating stellar core collapse

Abstract

In a series of axisymmetric core-collapse supernova simulations extending up to $\sim 2\mathrm{s}$, we identify a regime of pre-collapse central rotation rates ($\sim 1\mathrm{Hz}$) that greatly enhances the emission of gravitational waves (GWs) during extended periods of time after bounce. The enhancement is a consequence of the resonance between the frequency of the fundamental quadrupolar ${}^{2}f$-mode of oscillation of the proto-neutron star and the frequency of the epicyclic oscillations at the boundary of the inner core. We observe periods of about several hundred milliseconds each where the resonance is active. The GW emission enhancement produces a correlated resonant modulation of the associated neutrino signal at the same frequencies. With GW frequencies of $\mathcal{O}(1\mathrm{kHz})$ and strain amplitudes within the sensitivity curves of current and next-generation interferometers at distances of $\mathcal{O}(1\mathrm{Mpc})$, this resonant-amplification mechanism may represent a potential game-changer for unveiling the supernova explosion mechanism through multimessenger astronomy.

11 pages, 7 figures

References in corpus (15)

• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Advanced LIGO
• Gravitational-wave sensitivity curves
• Supernova Neutrino Detection
• Science-Driven Tunable Design of Cosmic Explorer Detectors
• The IACOB project. VII. The rotational properties of Galactic massive O-type stars revisited
• Three dimensional magnetorotational core-collapse supernova explosions of a 39 solar mass progenitor star
• Magnetorotational core collapse of possible GRB progenitors. IV. A wider range of progenitors
• Three-dimensional GRMHD Simulations of Rapidly Rotating Stellar Core-Collapse
• The magneto-rotational instability in massive stars
• Three approaches for the classification of protoneutron star oscillation modes
• Reconstructing Gravitational Wave Core-Collapse Supernova Signals with Dynamic Time Warping
• Search for gravitational waves emitted from SN 2023ixf
• Observing Supernova Neutrino Light Curves with Super-Kamiokande. III. Extraction of Mass and Radius of Neutron Stars from Synthetic Data
• Diffuse Neutrino Background from Magnetorotational Stellar Core Collapses

Cited by in corpus (1)

• Trends in gravitational wave emission in axisymmetric simulations of rotating core-collapse supernovae