82 citations · 873 across the 60 of their papers we have counts for
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Transient discs around isolated accreting neutron stars
Marina D. Afonina, Anton V. Biryukov, Sergei B. Popov +1
Mature, isolated neutron stars can accrete from the interstellar medium. Due to turbulence, the accreted gas can have a substantial angular momentum and form a disc around the comp…
Population synthesis and detection prospects for Galactic long-period transients with LISA
Arthur G. Suvorov, Nikolaos Karnesis, Valeriya Korol
The recently-discovered long-period radio transients represent a puzzling new class of astrophysical sources, some of which are thought to be compact binary systems emitting a puls…
Magnetorotational instabilities in solids: Application to neutron-star crusts
Arthur G. Suvorov, Thomas Celora, Kostas D. Kokkotas
The magnetorotational instability can generate strong, turbulent substructure within magnetized shear flows. The efficacy of the mechanism as a function of microphysical aspects of…
Dynamics of magnetoviscous warped discs around compact objects
Arthur G. Suvorov, Kostas Glampedakis
Accretion discs that are tilted with respect to their compact hosts can warp out-of-plane through general relativistic frame-dragging. Warp influences disc dynamics in ways that ha…
General-relativistic magnetar magnetospheres in 3D with physics-informed neural networks
Petros Stefanou, Arthur G. Suvorov, José A. Pons
Magnetar phenomena are likely intertwined with the location and structure of magnetospheric currents. General-relativistic effects are important in shaping the force-free equilibri…
Revealing the nature of long-period transients with space-based gravitational-wave interferometers
Arthur G. Suvorov, Clara Dehman, José A. Pons
A few members of the recently discovered class of long-period transients have been identified as binaries with white-dwarf primaries. In most cases, however, electromagnetic data a…
Late-blooming magnetars: awakening as long period transients after a dormant cooling epoch
Arthur G. Suvorov, Clara Dehman, José A. Pons
Long-period transients are an elusive class of compact objects uncovered by radio surveys. While magnetars are a leading candidate for those sources that appear isolated, several o…
Non-linear saturation of gravito-inertial modes excited by tidal resonances in binary neutron stars
Alexis Reboul-Salze, Aurélie Astoul, Hao-Jui Kuan +1
During the last seconds of a binary neutron-star merger, the tidal force can excite stellar oscillation modes to large amplitudes. From the perspective of premerger electromagnetic…
Magnetar structure in non-linear electrodynamics with mixed poloidal-toroidal fields
Arthur G. Suvorov, José A. Pons
Magnetars have inferred polar field strengths in excess of the Schwinger limit, where non-linear electromagnetic effects can be significant. Their internal fields may be even stron…
Premerger phenomena in neutron-star binary coalescences
Arthur G. Suvorov, Hao-Jui Kuan, Kostas D. Kokkotas
A variety of high-energy events can take place in the seconds leading up to a binary neutron-star merger. Mechanisms involving tidal resonances, electrodynamic interactions, or sho…
Couplings of torsional and shear oscillations in a neutron star crust
Hajime Sotani, Arthur G. Suvorov, Kostas D. Kokkotas
Mature neutron stars are thought to be sufficiently cold that nuclei in the outer layers freeze, solidifying a crust. Crustal elasticity allows the star to support a set of seismic…
Magnetic amplification in premerger neutron stars through resonance-induced magnetorotational instabilities
Arthur G. Suvorov, Hao-Jui Kuan, Alexis Reboul-Salze +1
Tidal resonances in the final seconds of a binary neutron-star inspiral can excite oscillation modes in one or both of the constituents to large amplitudes. Under favorable circums…
Measuring spin in coalescing binaries of neutron stars showing double precursors
Hao-Jui Kuan, Arthur G. Suvorov, Kostas D. Kokkotas
Gamma-ray bursts resulting from binary neutron-star mergers are sometimes preceded by precursor flares. These harbingers may be ignited by quasi-normal modes, excited by orbital re…
The radio shut-off, glitch, and X-ray burst in 1E 1547.0-5408 interpreted through magnetic reconfiguration
Arthur G. Suvorov
A short X-ray burst was observed from the radio-loud magnetar 1E 1547.0-5408 in 2022 April. Unusually however, the source stopped showing radio pulsations weeks prior…
Evolutionary implications of a magnetar interpretation for GLEAM-X J162759.5-523504.3
Arthur G. Suvorov, Andrew Melatos
The radio pulsar GLEAM-X J162759.5-523504.3 has an extremely long spin period ($P = 1091.17\, \mbox{s}$), and yet seemingly continues to spin down rapidly ($\dot{P} < 1.2 \times 10…
Does the gamma-ray binary LS I +61°303 harbor a magnetar?
Arthur G. Suvorov, Kostas Glampedakis
The high-mass X-ray binary LS I +61°303 is also cataloged as a gamma-ray binary as a result of frequent outbursts at TeV photon energies. The system has released two soft-gamma fla…
Quasi-periodic oscillations in precursor flares via seismic aftershocks from resonant shattering
Arthur G. Suvorov, Hao-Jui Kuan, Kostas D. Kokkotas
GRB 211211A was accompanied by a kilonova, implying a merger origin for the event. A precursor flare, modulated by quasi-periodic oscillations at $\approx 22\, \mbox{Hz}$, was also…
Wave-optical effects in the microlensing of continuous gravitational waves by star clusters
Arthur G. Suvorov
Rapidly rotating neutron stars are promising sources for existing and upcoming gravitational-wave interferometers. While relatively dim, these systems are expected to emit continuo…
Modelling spin-up episodes in accreting millisecond X-ray pulsars
Kostas Glampedakis, Arthur G. Suvorov
Accreting millisecond X-ray pulsars are known to provide a wealth of physical information during their successive states of outburst and quiescence. Based on the observed spin-up a…
Magnetically supramassive neutron stars
Arthur G Suvorov, Kostas Glampedakis
It is commonly believed that neutron stars exceeding the maximum mass limit for stability could be formed in the aftermath of binary neutron star mergers, enjoying a short life of…
General-relativistic treatment of tidal -mode resonances in coalescing binaries of neutron stars. II. As triggers for precursor flares of short gamma-ray bursts
Hao-Jui Kuan, Arthur G. Suvorov, Kostas D. Kokkotas
In some short gamma-ray bursts, precursor flares occurring seconds prior to the main episode have been observed. These flares may then be associated with the last few cycles…
Ultra-compact X-ray binaries as dual-line gravitational-wave sources
Arthur G. Suvorov
By virtue of their sub-hour orbital periods, ultra-compact X-ray binaries are promising sources for the space-borne gravitational-wave interferometers LISA, Taiji, and TianQin. Som…
Precessing magnetars as central engines in short gamma-ray bursts
Arthur G. Suvorov, Kostas D. Kokkotas
Short gamma-ray bursts that are followed by long-duration X-ray plateaus may be powered by the birth, and hydrodynamic evolution, of magnetars from compact binary coalescence event…
Recycled pulsars with multipolar magnetospheres from accretion-induced magnetic burial
Arthur G. Suvorov, Andrew Melatos
Many millisecond pulsars are thought to be old neutron stars spun up (`recycled') during an earlier accretion phase. They typically have relatively weak ($\lesssim 10^{9} \text{ G}…