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Numerical methods for General Relativistic particles
Fabio Bacchini, Bart Ripperda, Lorenzo Sironi
We present recent developments on numerical algorithms for computing photon and particle trajectories in the surrounding of compact objects. Strong gravity around neutron stars or…
Relativistic resistive magnetohydrodynamic reconnection and plasmoid formation in merging flux tubes
Bart Ripperda, Oliver Porth, Lorenzo Sironi +1
We apply the general relativistic resistive magnetohydrodynamics code {\tt BHAC} to perform a 2D study of the formation and evolution of a reconnection layer in between two merging…
Particle orbits at the magnetopause: Kelvin-Helmholtz induced trapping
Matthieu Leroy, Bart Ripperda, Rony Keppens
The Kelvin-Helmholtz instability (KHI) is a known mechanism for penetration of solar wind matter into the magnetosphere. Using three-dimensional, resistive magnetohydrodynamic simu…
Test particles in relativistic resistive magnetohydrodynamics
Bart Ripperda, Oliver Porth, Rony Keppens
The Black Hole Accretion Code (BHAC) has recently been extended with the ability to evolve charged test particles according to the Lorentz force within resistive relativistic magne…
Generalized, energy-conserving numerical simulations of particles in general relativity. II. Test particles in electromagnetic fields and GRMHD
Fabio Bacchini, Bart Ripperda, Oliver Porth +1
Direct observations of compact objects, in the form of radiation spectra, gravitational waves from VIRGO/LIGO, and forthcoming direct imaging, are currently one of the primary sour…
Generalized, energy-conserving numerical simulations of particles in general relativity. I. Time-like and null geodesics
Fabio Bacchini, Bart Ripperda, Alexander Yuran Chen +1
The numerical integration of particle trajectories in curved spacetimes is fundamental for obtaining realistic models of the particle dynamics around massive compact objects such a…