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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…
Modeling X-ray reflection spectra from returning radiation: application to 4U 163047
Kostas Kourmpetis, Shafqat Riaz, Honghui Liu +6
Returning radiation is thought to play a key role in disk illumination of black hole X-ray binaries in the high-soft state, yet it has not been fully incorporated into XSPEC reflec…
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…