91 citations · 459 across the 23 of their papers we have counts for
8 papers · 1 filter
Fast X-ray Variability from the Coronae of Supermassive Black Holes
Xiurui Zhao, Luca Comisso, Stefano Marchesi +4
We present the first systematic study of short-timescale X-ray variability in radio-quiet active galactic nuclei (AGN), utilizing archival Chandra observations of approximately 3,0…
Reconnection-Driven Turbulent Fluctuations in the Magnetically Dominated Collisionless Regime
Yue Hu, Luca Comisso, Lorenzo Sironi +1
Magnetic reconnection is a fundamental plasma process that converts magnetic energy into bulk flow energy, thermal energy, and nonthermal particle acceleration. Despite its importa…
Magnetic Field-Line Curvature and Its Role in Particle Acceleration by Magnetically Dominated Turbulence
Samuel Sebastian, Luca Comisso
We employ first-principles, fully kinetic particle-in-cell simulations to investigate magnetic field-line curvature in magnetically dominated turbulent plasmas and its role in part…
Intermittency in Collisionless Large-Amplitude Turbulence
Ryan Golant, Luca Comisso, Philipp Kempski +1
Large-amplitude turbulence -- characterized by a fluctuating magnetic field component, , that is stronger than the mean component, -- is generically intermittent, populat…
Statistics of Current and Vorticity Structures in Relativistic Turbulence
Zachary Davis, Luca Comisso, Colby Haggerty +1
Coherent structures created through turbulent cascades play a key role in energy dissipation and particle acceleration. In this work, we investigate both current and vorticity shee…
Diffuse neutrino flux from coronal magnetospheric current sheets of accreting black holes
Despina Karavola, Maria Petropoulou, Damiano F. G. Fiorillo +2
Non-jetted AGN exhibit hard X-ray emission with a power law spectrum above 2 keV, which is thought to be produced through Comptonization of soft photons by electrons and posi…