Publications (45)
X-rays from Magnetically Confined Wind Shocks: Effect of Cooling-Regulated Shock Retreat
Asif ud-Doula, Stanley Owocki, Richard Townsend +2
We use 2D MHD simulations to examine the effects of radiative cooling and inverse Compton (IC) cooling on X-ray emission from magnetically confined wind shocks (MCWS) in magnetic m…
Exponential integrators for the stochastic Manakov equation
André Berg, David Cohen, Guillaume Dujardin
This article presents and analyses an exponential integrator for the stochastic Manakov equation, a system arising in the study of pulse propagation in randomly birefringent optica…
Splitting schemes for FitzHugh--Nagumo stochastic partial differential equations
Charles-Edouard Bréhier, David Cohen, Giuseppe Giordano
We design and study splitting integrators for the temporal discretization of the stochastic FitzHugh--Nagumo system. This system is a model for signal propagation in nerve cells wh…
Mass Loss and Magnetospheres: X-rays from Hot Stars and Young Stellar Objects
Marc Gagne, David Cohen, Stanley Owocki +1
High-resolution X-ray spectra of high-mass stars and low-mass T-Tauri stars obtained during the first year of the Chandra mission are providing important clues about the mechanisms…
Multi-symplectic discretisation of wave map equations
David Cohen, Olivier Verdier
We present a new multi-symplectic formulation of constrained Hamiltonian partial differential equations, and we study the associated local conservation laws. A multi-symplectic dis…
Long-term analysis of numerical integrators for oscillatory Hamiltonian systems under minimal non-resonance conditions
David Cohen, Ludwig Gauckler, Ernst Hairer +1
For trigonometric and modified trigonometric integrators applied to oscillatory Hamiltonian differential equations with one or several constant high frequencies, near-conservation…