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Session: Cosmology and Relativistic Astrophysics

Name: Mr. Argyrios Loules (National & Kapodistrian Univ. of Athens )
Coauthors: Vlahakis Nektarios (National and Kapodistrian University of Athens)
Type: Oral
Title: Unveiling the Effects of Electromagnetic Dissipation on Relativistic Jets
Abstract:

Relativistic astrophysical jets are highly energetic, collimated plasma outflows ubiquitous in extreme astrophysical environments. Owing to their intriguing and complex nature, the dynamics of these outflows have been extensively studied over the past few decades, with a large number of works dedicated to the investigation of the mechanisms which accelerate and collimate them. In the present work relativistic astrophysical jets are studied under the assumption of non-zero electrical resistivity with the aim of uncovering the impact of electromagnetic dissipation upon their dynamics and morphology. We expand the equations of resistive relativistic MHD in spherical geometry in the vicinity of the polar axis and retrieve polynomials in the polar angle θ. These polynomials provide the differential equations which govern the radial profiles of the jet parameters and its electromagnetic field. The analytical solutions retrieved from this system of equations unveil the impact of electromagnetic dissipation on the jet’s acceleration and collimation mechanisms and allow for a comparison between the dynamics of resistive jets and their ideal MHD counterparts.