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Interpreting Crab Nebula synchrotron spectrum: two acceleration mechanisms
Maxim Lyutikov, Tea Temim, Sergey Komissarov +3
We outline a model of the Crab Pulsar Wind Nebula with two different populations of synchrotron emitting particles, arising from two different acceleration mechanisms: (i) Componen…
Numerical methods for General Relativistic particles
Fabio Bacchini, Bart Ripperda, Lorenzo Sironi
We present recent developments on numerical algorithms for computing photon and particle trajectories in the surrounding of compact objects. Strong gravity around neutron stars or…
Relativistic resistive magnetohydrodynamic reconnection and plasmoid formation in merging flux tubes
Bart Ripperda, Oliver Porth, Lorenzo Sironi +1
We apply the general relativistic resistive magnetohydrodynamics code {\tt BHAC} to perform a 2D study of the formation and evolution of a reconnection layer in between two merging…
Generalized, energy-conserving numerical simulations of particles in general relativity. II. Test particles in electromagnetic fields and GRMHD
Fabio Bacchini, Bart Ripperda, Oliver Porth +1
Direct observations of compact objects, in the form of radiation spectra, gravitational waves from VIRGO/LIGO, and forthcoming direct imaging, are currently one of the primary sour…
Particle Acceleration in Relativistic Plasma Turbulence
Luca Comisso, Lorenzo Sironi
Due to its ubiquitous presence, turbulence is often invoked to explain the origin of nonthermal particles in astrophysical sources of high-energy emission. With particle-in-cell si…
The Scattering and Intrinsic Structure of Sagittarius A* at Radio Wavelengths
Michael D. Johnson, Ramesh Narayan, Dimitrios Psaltis +12
Radio images of the Galactic Center supermassive black hole, Sagittarius A* (Sgr A*), are dominated by interstellar scattering. Previous studies of Sgr A* have adopted an anisotrop…