57 citations · 271 across the 13 of their papers we have counts for
10 papers · 1 filter
Anomalous coupling in radiation mediated shocks}
A. Levinson, A. Granot, A. Vanthieghem +1
We summarize recent attempts to unravel the role of plasma kinetic effects in radiation mediated shocks. Such shocks form in all strong stellar explosions and are responsible for t…
Three-dimensional dynamics of strongly twisted magnetar magnetospheres: Kinking flux tubes and global eruptions
J. F. Mahlmann, A. A. Philippov, V. Mewes +3
The origins of the various outbursts of hard X-rays from magnetars (highly magnetized neutron stars) are still unknown. We identify instabilities in relativistic magnetospheres tha…
Magnetically driven coupling in relativistic radiation-mediated shocks
J. F. Mahlmann, A. Vanthieghem, A. A. Philippov +3
The radiation drag in photon-rich environments of cosmic explosions can seed kinetic instabilities by inducing velocity spreads between relativistically streaming plasma components…
Electromagnetic fireworks: Fast radio bursts from rapid reconnection in the compressed magnetar wind
J. F. Mahlmann, A. A. Philippov, A. Levinson +2
One scenario for the generation of fast radio bursts (FRBs) is magnetic reconnection in a current sheet of the magnetar wind. Compressed by a strong magnetic pulse induced by a mag…
Diffusivity in force-free simulations of global magnetospheres
J. F. Mahlmann, M. A. Aloy
Abstract: Assuming that the numerical diffusivity triggered by violations of the force-free electrodynamics constraints is a proxy for the physical resistivity, we examine its impa…
Weak Alfvénic turbulence in relativistic plasmas. Part 1. Dynamical equations and basic dynamics of interacting resonant triads
J. M. TenBarge, B. Ripperda, A. Chernoglazov +6
Alfvén wave collisions are the primary building blocks of the non-relativistic turbulence that permeates the heliosphere and low-to-moderate energy astrophysical systems. However,…
Weak Alfvénic turbulence in relativistic plasmas II: Current sheets and dissipation
B. Ripperda, J. F. Mahlmann, A. Chernoglazov +6
Alfvén waves as excited in black hole accretion disks and neutron star magnetospheres are the building blocks of turbulence in relativistic, magnetized plasmas. A large reservoir o…
Striped Blandford/Znajek jets from advection of small scale magnetic field
J. F. Mahlmann, A. Levinson, M. A. Aloy
Black hole - accretion disc systems are the central engines of relativistic jets from stellar to galactic scales. We numerically quantify the unsteady outgoing Poynting flux throug…
Instability of twisted magnetar magnetospheres
J. F. Mahlmann, T. Akgün, J. A. Pons +2
We present three-dimensional force-free electrodynamics simulations of magnetar magnetospheres that demonstrate the instability of certain degenerate, high energy equilibrium solut…
Numerically solving the relativistic Grad-Shafranov equation in Kerr spacetimes: Numerical techniques
J. F. Mahlmann, P. Cerdá-Durán, M. A. Aloy
The study of the electrodynamics of static, axisymmetric and force-free Kerr magnetospheres relies vastly on solutions of the so called relativistic Grad-Shafranov equation (GSE).…