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The pulsar synchrotron in 3D: curvature radiation
Ioannis Contopoulos, Constantinos Kalapotharakos
We investigate the strong electric current sheet that develops at the tip of the pulsar closed line region through time dependent three-dimensional numerical simulations of a rotat…
MHD Accretion-Disk Winds as X-ray Absorbers in AGNs
Keigo Fukumura, Demosthenes Kazanas, Ioannis Contopoulos +1
We present the 2D ionization structure of self-similar MHD winds off accretion disks around irradiated by a central X-ray source. Based on earlier observational clues and theoretic…
The invariant Twist of Magnetic Fields in the Relativistic Jets of Active Galactic Nuclei
Ioannis Contopoulos, Dimitris M. Christodoulou, Demosthenes Kazanas +1
The origin of cosmic magnetic (B) fields remains an open question. It is generally believed that very weak primordial B fields are amplified by dynamo processes, but it appears unl…
The pulsar synchrotron: coherent radio emission
Ioannis Contopoulos
We propose a simple physical picture for the generation of coherent radio emission in the axisymmetric pulsar magnetosphere that is quite different from the canonical paradigm of r…