3 papers
astro-ph.HE2025
High-energy radiation from the pulsar Equatorial Current Sheet
Ioannis Contopoulos, Jerome Petri, Ioannis Dimitropoulos
Pulsars emit beams of radiation that reveal the extreme physics of neutron star magnetospheres. Yet, their understanding remains incomplete. Recent global Particle-in-Cell (PIC) si…
astro-ph.HE2024
The 3D pulsar magnetosphere with machine learning: first results
Ioannis Dimitropoulos, Evaggelos Chaniadakis, Ioannis Contopoulos
All numerical solutions of the pulsar magnetosphere over the past 25 years show closed-line regions that end a significant distance inside the light cylinder, and manifest thick st…
astro-ph.HE2024
Flares from plasmoids and current sheets around Sgr A*
I. Dimitropoulos, A. Nathanail, M. Petropoulou +2
The supermassive black hole Sgr A* at the center of our galaxy produces repeating near-infrared flares that are observed by ground and space based instruments. This activity has be…