Neutrino-dominated accretion flows (NDAFs) around rotating stellar-mass black holes (BHs)
are plausible candidates for the central engines of gamma-ray bursts (GRBs). NDAFs are …

Black hole (BH) accretion flows and jets are qualitatively affected by the presence of ordered
magnetic fields. We study fully 3D global general relativistic magnetohydrodynamic (MHD) …

We consider a subset of the physical processes that determine the spin j≡ a/M of
astrophysical black holes. These include (1) Initial conditions. Recent models suggest that …

Rotating black holes probably power ultrarelativistic jets in gamma-ray bursts, relativistic jets
from some active galactic nuclei, and jets from some black hole X-ray binaries. Prior …

In this paper we present a compilation of results from our most advanced neutron star
merger simulations. Special aspects of these models were refered to in earlier publications …

We use a ray-tracing technique to compute the observed spectrum of a thin accretion disk
around a Kerr black hole. We include all relativistic effects such as frame-dragging, Doppler …

Open questions in GRB physics are summarized as of 2011, including classification,
progenitor, central engine, ejecta composition, energy dissipation and particle acceleration …

Evolution characteristics of a Kerr black hole (BH) are investigated by considering the
coexistence of disc accretion with the Blandford–Znajek process (the BZ process) and …

We consider a stationary axisymmetric force-free degenerate magnetosphere of a rotating
Kerr black hole surrounded by a thin, Keplerian, infinitely conducting accretion disk. We …

A numerical model of a steady state, thin accretion disk with a constant effective speed of
sound is presented. We demonstrate that a" no torque" inner boundary condition is a …