50 citations · 107 across the 11 of their papers we have counts for
12 papers
Spin wandering of an accreting neutron star near torque balance: implications for gravitational wave searches
Andrew Melatos
Torque balance between gravitational radiation reaction and magnetocentrifugal accretion is one reason why accreting neutron stars rotate slower than centrifugal break-up. Random p…
Search for Long-Transient Gravitational Waves from Supernova SN2023ixf using GFH-v2 Pipeline
Sandhya Sajith Menon, Lorenzo Pierini, Pia Astone +24
We present a directed search for long-transient gravitational waves from the possible newborn magnetar remnant of SN2023ixf, a nearby Type II core-collapse supernova in the M101 ga…
Discovering pulsars in compact binaries with a hidden Markov model
Joseph O'Leary, Liam Dunn, Andrew Melatos
Discovering radio pulsars in compact binaries, whose orbital periods satisfy , is computationally challenging, because the time-depend…
Is there a retrograde accretion disk around 4U 162667? Tracking torque reversals with a state-space model
Joseph O'Leary, Andrew Melatos, Tom Kimpson +5
X-ray timing studies of the persistent, Galactic, accretion-powered pulsar 4U 162667 reveal torque reversals, during which the pulse frequency alternates between multiyea…
Measuring the crust-superfluid coupling time-scale for 105 UTMOST pulsars with a Kalman filter
Wenhao Dong, Andrew Melatos, Nicholas J. O'Neill +2
Crust-superfluid coupling plays an important role in neutron star rotation, particularly with respect to timing noise and glitches. Here, we present new timing-noise-based estimate…
Argus: JAX state-space filtering for gravitational wave detection with a pulsar timing array
Tom Kimpson, Nicholas J. O'Neill, Patrick M. Meyers +1
Argus is a high-performance Python package for detecting and characterising nanohertz gravitational waves in pulsar timing array data. The package provides a complete Bayesian infe…
Quadrupole Moment of a Magnetically Confined Mountain on an Accreting Neutron Star in General Relativity
Pedro Henrique Barboza Rossetto, Jörg Frauendiener, Andrew Melatos
General relativistic corrections are calculated for the quadrupole moment of a magnetically confined mountain on an accreting neutron star. The hydromagnetic structure of the mount…
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…
Magnetic dynamo caused by axions in neutron stars
Filippo Anzuini, José A. Pons, Antonio Gómez-Bañón +3
The coupling between axions and photons modifies Maxwell's equations, introducing a dynamo term in the magnetic induction equation. In neutron stars, for critical values of the axi…
Gradient expansion technique for inhomogeneous, magnetized quark matter
Filippo Anzuini, Andrew Melatos
A quark-magnetic Ginzburg-Landau (qHGL) gradient expansion of the free energy of two-flavor inhomogeneous quark matter in a magnetic field is derived analytically. It can be ap…
Hidden Markov model tracking of continuous gravitational waves from young supernova remnants
L. Sun, A. Melatos, S. Suvorova +2
Searches for persistent gravitational radiation from nonpulsating neutron stars in young supernova remnants (SNRs) are computationally challenging because of rapid stellar braking.…
Stability of interlinked neutron vortex and proton flux tube arrays in a neutron star: equilibrium configurations
L. V. Drummond, A. Melatos
Three-dimensional, Gross-Pitaevskii equation (GPE) simulations are presented of the interaction between neutron superfluid vortices and proton superconductor flux tubes in a rotati…