219 citations · 1k across the 17 of their papers we have counts for
17 papers
The runaway instability in general relativistic accretion disks
O. Korobkin, E. Abdikamalov, N. Stergioulas +4
When an accretion disk falls prey to the runaway instability, a large portion of its mass is devoured by the black hole within a few dynamical times. Despite decades of effort, it…
Gravitational Waves and Hydromagnetic Instabilities in Rotating Magnetized Neutron Stars
Paul D. Lasky, Burkhard Zink, Kostas D. Kokkotas
We perform nonlinear general relativistic ideal magnetohydrodynamic simulations of poloidal magnetic fields in rotating polytropic neutron stars. We have three primary goals: i) to…
Are gravitational waves from giant magnetar flares observable?
Burkhard Zink, Paul D. Lasky, Kostas D. Kokkotas
Are giant flares in magnetars viable sources of gravitational radiation? Few theoretical studies have been concerned with this problem, with the small number using either highly id…
The f-mode instability in relativistic neutron stars
Erich Gaertig, Kostas Glampedakis, Kostas D. Kokkotas +1
Rapidly spinning neutron stars are known to harbour pulsation modes that may become unstable and grow in amplitude by emitting gravitational radiation. Among the various stellar mo…
Hydromagnetic Instabilities in Neutron Stars
Paul D. Lasky, Burkhard Zink, Kostas D. Kokkotas +1
We model the non-linear ideal magnetohydrodynamics of poloidal magnetic fields in neutron stars in general relativity assuming a polytropic equation of state. We identify familiar…
HORIZON: Accelerated General Relativistic Magnetohydrodynamics
Burkhard Zink
We present Horizon, a new graphics processing unit (GPU)-accelerated code to solve the equations of general relativistic magnetohydrodynamics in a given spacetime. We evaluate the…