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Test-particle dynamics in general spherically symmetric black hole spacetimes
Mariafelicia De Laurentis, Ziri Younsi, Oliver Porth +2
To date, the most precise tests of general relativity have been achieved through pulsar timing, albeit in the weak-field regime. Since pulsars are some of the most precise and stab…
A comprehensive comparison of relativistic particle integrators
Bart Ripperda, Fabio Bacchini, Jannis Teunissen +5
We compare relativistic particle integrators commonly used in plasma physics showing several test cases relevant for astrophysics. Three explicit particle pushers are considered, n…
The kilo Hertz quasi-periodic oscillations in neutron star low-mass X-ray binaries as tori oscillation modes. I
Marcio G B de Avellar, Oliver Porth, Ziri Younsi +1
There have been many efforts to explain the dynamical mechanisms behind the phenomenology of quasi-periodic oscillations (QPOs) seen in the X-ray light curves of low-mass X-ray bin…
Jet-torus connection in radio galaxies: Relativistic hydrodynamics and synthetic emission
C. M. Fromm, M. Perucho, O. Porth +5
High-resolution Very-Long-Baseline Interferometry observations of active galactic nuclei have revealed asymmetric structures in the jets of radio galaxies. These asymmetric structu…
Rayleigh-Taylor Instability in Two-Component Relativistic Jets
Kenji Toma, Serguei S. Komissarov, Oliver Porth
Relativistic jets associated with active galactic nuclei and gamma-ray bursts propagate over huge distances without significant loss of momentum. At the same time they are bright e…
Modelling Jets, Tori and Flares in Pulsar Wind Nebulae
Oliver Porth, Rolf Buehler, Barbara Olmi +5
In this contribution we review the recent progress in the modeling of Pulsar Wind Nebulae (PWN). We start with a brief overview of the relevant physical processes in the magnetosph…