| Name: | Bhargav Vaidya |
| Affiliation: | IIT Indore |
| Conference ID: | ASI2025_609 |
| Title: | Simulating Astrophysical and Space Plasma Jets in the Era of Multi-messenger Astronomy. |
| Authors: | Bhargav Vaidya 1 , Nikita Upreti 2, Sayan Kundu 3, Chandan Das 1, Harshita Bhuyan 1, Amit Shukla 1
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| Authors Affiliation: | 1 DAASE, Indian Institute of Technology Indore, Khadwa Road, Simrol, Indore 453552,
2 Max Planck Institute of Plasma Physics, Boltzmannstrasse 2, 85748 Garching b. Muenchen,
3 Department of Physics, University of Bath, Claverton Down, Bath BA2 7AY, UK |
| Mode of Presentation: | Oral |
| Abstract Category: | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract: | Particle acceleration is a prevalent phenomenon observed in astrophysical and space plasma jets, particularly in our Sun, young stars, and Active Galaxies. Various mechanisms energize particles in these environments, interacting in a complex, non-linear manner across different time and length scales, making it challenging to identify the physical processes that drive particle acceleration. Specifically, jets from Active Galactic Nuclei (AGN) are relativistic beams of plasma that encounter magnetic instabilities, leading to shocks, turbulence, and reconnection events within the jet. These processes are essential for regulating the primarily non-thermal emission across multiple wavebands from AGN jets.In my presentation, I will share recent research aimed at elucidating the relationships between these phenomena. Our findings use a hybrid Eulerian and Lagrangian modeling framework that captures large-scale jet dynamics while integrating micro-physical aspects like particle acceleration and radiative cooling at a sub-grid level. The interaction of shock and stochastic acceleration mechanisms will be discussed, based on axisymmetric simulations of radio lobes conducted within this framework. Additionally, I will describe our study of unusual radio features in AGN jets, showcasing high-resolution, three-dimensional relativistic magnetohydrodynamic (MHD) simulations. These simulations compare the ribs and tethers observed in the "MysTail" radio galaxy from the Abell cluster 3266, as part of the MeerKAT Galaxy Cluster Legacy Survey. The role of kink instability-driven phenomena in producing these features will also be emphasized. Finally, I will present initial results from a novel 3D relativistic MHD simulation of a plasma column, focusing on reconnection zones and their implications for driving rapid variabilities in TeV emissions |
