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Magnetized Disk-Winds in NGC 3783
Keigo Fukumura, Demosthenes Kazanas, Chris Shrader +3
We analyze a 900-ks stacked Chandra/HETG spectrum of NGC 3783 in the context of magnetically-driven accretion-disk wind models in an effort to provide tight constraints on the glob…
Electron positron pair flow and current composition in the pulsar magnetosphere
Gabriele Brambilla, Constantinos Kalapotharakos, Andrey Timokhin +2
We performed ab-initio Particle-In-Cell (PIC) simulations of a pulsar magnetosphere with electron-positron plasma produced only in the regions close to the neutron star surface. We…
3D Kinetic Pulsar Magnetosphere Models: Connecting to Gamma-Ray Observations
Constantinos Kalapotharakos, Gabriele Brambilla, Andrey Timokhin +2
We present 3D global kinetic pulsar magnetosphere models, where the charged particle trajectories and the corresponding electromagnetic fields are treated self-consistently. For ou…
New Bound Closed Orbits in Spherical Potentials
Dimitris M. Christodoulou, Demosthenes Kazanas
We present new families of bound, closed, nonelliptical orbits that are supported by various spherical potentials in clear contradiction to Newton's and Bertrand's theorems. We cal…
Numerical simulations of the Cosmic Battery in accretion flows around astrophysical black holes
Ioannis Contopoulos, Antonios Nathanail, Alexander Sadowski +2
We implement the KORAL code to perform two sets of very long general relativistic radiation magnetohydrodynamic simulations of an axisymmetric optically thin magnetized flow around…
Magnetically Advected Winds
Ioannis Contopoulos, Demosthenes Kazanas, Keigo Fukumura
Observations of X-ray absorption lines in magnetically driven disk winds around black hole binaries and active galactic nuclei yield a universal radial density profile rho proporti…