36 citations · 117 across the 13 of their papers we have counts for
13 papers
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…
Action based approach to dissipative relativistic fluid systems
G. L. Comer, N. Andersson, T. Celora +1
We develop an action principle for a relativistic two-fluid system with dissipation. The specific constituents of the model - which serves as a proof of principle - are particles a…
Higher-level large-eddy filtering strategy for general relativistic fluid simulations
Thomas Celora, Nils Andersson, Ian Hawke +2
Nonlinear simulations of neutron star mergers are complicated by the need to represent turbulent dynamics. As we cannot (yet) perform simulations that resolve accurately both the g…
Covariant approach to relativistic large-eddy simulations: Lagrangian filtering
T. Celora, M. J. Hatton, I. Hawke +1
We present a proof-of-principle implementation of the first fully covariant filtering scheme applied to relativistic fluid turbulence. The filtering is performed with respect to sp…
Dissipation and turbulence in general relativistic hydrodynamics
Thomas Celora
This work is concerned with advancing multi-fluid models in General Relativity, and in particular focuses on the modelling of dissipative fluids and turbulent flows. Such models ar…
Modelling Neutron-Star Ocean Dynamics
F. Gittins, T. Celora, A. Beri +1
We re-visit the calculation of mode oscillations in the ocean of a rotating neutron star, which may be excited during thermonuclear X-ray bursts. Our present theoretical understand…
Local magneto-shear instability in Newtonian gravity
T. Celora, I. Hawke, N. Andersson +1
The magneto-rotational instability (MRI) - which is due to an interplay between a sheared background and the magnetic field - is commonly considered a key ingredient for developing…
AstroSat and NuSTAR observations of XTE J1739-285 during the 2019-2020 outburst
Aru Beri, Rahul Sharma, Pinaki Roy +5
We report results from a study of XTE J1739-285, a transient neutron star low mass X-ray binary observed with AstroSat and NuSTAR during its 2019-2020 outburst. We detected accreti…
Formulating bulk viscosity for neutron star simulations
T. Celora, I. Hawke, P. C. Hammond +2
In order to extract the precise physical information encoded in the gravitational and electromagnetic signals from powerful neutron-star merger events, we need to include as much o…
The physics of non-ideal general relativistic magnetohydrodynamics
N. Andersson, I. Hawke, T. Celora +1
We consider a framework for non-ideal magnetohydrodynamics in general relativity, paying particular attention to the physics involved. The discussion highlights the connection betw…
A covariant approach to relativistic large-eddy simulations: The fibration picture
Thomas Celora, Nils Andersson, Ian Hawke +1
Models of turbulent flows require the resolution of a vast range of scales, from large eddies to small-scale features directly associated with dissipation. As the required resoluti…
Linearizing a Non-linear Formulation for General Relativistic Dissipative Fluids
Thomas Celora, Nils Andersson, Greg L. Comer
Fully non-linear equations of motion for dissipative general relativistic multi-fluids can be obtained from an action principle involving the explicit use of lower dimensional matt…
The effect of non-linear mutual friction on pulsar glitch sizes and rise times
Thomas Celora, Vadym Khomenko, Marco Antonelli +1
Observations of pulsar glitches have the potential to provide constraints on the dynamics of the high density interior of neutron stars. However, to do so, realistic glitch models…