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Axion sourcing in dense stellar matter via CP-violating couplings
Filippo Anzuini, Antonio Gómez-Bañón, José A. Pons +2
Compact objects such as neutron stars and white dwarfs can source axion-like particles and QCD axions due to CP-violating axion-fermion couplings. The magnitude of the axion field…
Which black hole is spinning? Probing the origin of black-hole spin with gravitational waves
Christian Adamcewicz, Shanika Galaudage, Paul D. Lasky +1
Theoretical studies of angular momentum transport suggest that isolated stellar-mass black holes are born with negligible dimensionless spin magnitudes . However, r…
MWA rapid follow-up of gravitational wave transients: prospects for detecting prompt radio counterparts
J. Tian, G. E. Anderson, A. J. Cooper +17
We present and evaluate the prospects for detecting coherent radio counterparts to gravitational wave (GW) events using Murchison Widefield Array (MWA) triggered observations. The…
Multi-messenger astronomy with a Southern-Hemisphere gravitational-wave observatory
James W. Gardner, Ling Sun, Ssohrab Borhanian +4
Joint observations of gravitational waves and electromagnetic counterparts will answer questions about cosmology, gamma-ray bursts, and the behaviour of matter at supranuclear dens…
Inhomogeneous Cosmology using General Relativistic Smoothed Particle Hydrodynamics coupled to Numerical Relativity
Spencer J. Magnall, Daniel J. Price, Paul D. Lasky +1
We perform three-dimensional simulations of homogeneous and inhomogeneous cosmologies via the coupling of a numerical relativity code for spacetime evolution and smoothed particle…
Evidence for a correlation between binary black hole mass ratio and black-hole spins
Christian Adamcewicz, Paul D. Lasky, Eric Thrane
The astrophysical origins of the binary black hole systems seen with gravitational waves are still not well understood. However, features in the distribution of black-hole masses,…