Zobrazeno 1 - 10
of 11 180
pro vyhledávání: '"Sironi, A."'
Autor:
Zou, Minghao, Hakobyan, Hayk, Mbarek, Rostom, Ripperda, Bart, Bacchini, Fabio, Sironi, Lorenzo
We propose novel numerical schemes based on the Boris method in curved spacetime, incorporating both hadronic and radiative interactions for the first time. Once the proton has lost significant energy due to radiative and hadronic losses, and its gyr
Externí odkaz:
http://arxiv.org/abs/2410.22781
A ubiquitous feature of accreting black hole systems is their hard X-ray emission which is thought to be produced through Comptonization of soft photons by electrons and positrons in the vicinity of the black hole, in a region with optical depth of o
Externí odkaz:
http://arxiv.org/abs/2410.12638
The origins of the magnetic fields that power gamma-ray burst (GRB) afterglow emission are not fully understood. One possible channel for generating these fields involves the pre-conditioning of the circumburst medium: in the early afterglow phase, p
Externí odkaz:
http://arxiv.org/abs/2410.05388
The physics of turbulence in magnetized plasmas remains an unresolved problem. The most poorly understood aspect is intermittency -- spatio-temporal fluctuations superimposed on the self-similar turbulent motions. We employ a novel machine-learning a
Externí odkaz:
http://arxiv.org/abs/2410.01878
Publikováno v:
A&A 690, A332 (2024)
Fast radio bursts (FRBs) are bright extragalactic transients likely produced by magnetars. We study the propagation of FRBs in magnetar winds, assuming that the wind is strongly magnetized and composed of electron-positron pairs. We focus on the regi
Externí odkaz:
http://arxiv.org/abs/2409.10732
We study the propagation of electromagnetic waves in tenuous plasmas, where the wave frequency, $\omega_0$, is much larger than the plasma frequency, $\omega_{\rm P}$. We show that in pair plasmas nonlinear effects are weak for $a_0 \ll \omega_0/\ome
Externí odkaz:
http://arxiv.org/abs/2409.04127
Collisionless low Mach number shocks are abundant in astrophysical and space plasma environments, exhibiting complex wave activity and wave-particle interactions. In this paper, we present 2D Particle-in-Cell (PIC) simulations of quasi-perpendicular
Externí odkaz:
http://arxiv.org/abs/2408.01699
Publikováno v:
2016 IEEE Conference on Computational Intelligence and Games (CIG 2016), pp. 436-443
General Video Game Playing (GVGP) is a field of Artificial Intelligence where agents play a variety of real-time video games that are unknown in advance. This limits the use of domain-specific heuristics. Monte-Carlo Tree Search (MCTS) is a search te
Externí odkaz:
http://arxiv.org/abs/2407.03049
Publikováno v:
Astrophys. J. 974, 75 (2024)
The cores of active galactic nuclei (AGN) are potential accelerators of 10-100 TeV cosmic rays, in turn producing high-energy neutrinos. This picture was confirmed by the compelling evidence of a TeV neutrino signal from the nearby active galaxy NGC
Externí odkaz:
http://arxiv.org/abs/2407.01678
Recent advances in numerical simulations of magnetically arrested accretion onto supermassive black holes have shed light on the formation and dynamics of magnetospheric current sheets near the black hole horizon. By considering the pair magnetizatio
Externí odkaz:
http://arxiv.org/abs/2406.01211