Simulations, multi-frequency imaging and synthetic observations of Blazar Jets.
Paramvir Singh (Goethe University Frankfurt)
Tuesday 07/03/2023 @ 14:00, Sala IV piano Battiferro - Presenza + remoto
The relativistic jets emanating from active galaxies owe their origin to an accreting black hole and ambient condition of the galactic center. These jets can remain collimated and propagate over a length of several kiloparsec. In this talk, I will present a numerical scheme and describe the relativistic magnetohydrodynamics simulation of the Blazar jets. The Blazars are a type of AGNs, which are inclined along the line of sight of the observer. I will consider different ambient medium conditions and magnetization for the numerical simulation. Next, I will describe the computation of synchrotron emission and outline the ray tracing techniques. These will be used to construct the radio images and single-dish spectrum. The effect of observational frequency, jet-density, pressure and magnetization on the global jet morphology will be discussed. I will describe the link between the plasma distribution from RMHD variables and radio images. Later, I will illustrate the application of this method to a realistic galactic profile, present synthetic observations of the fiducial model at 15 GHz and 86 GHz. I will conclude by briefly outlining my new activities on modeling of short Gamma Ray Bursts (GRBs) and Kilonovae as electromagnetic counterparts of binary neutron star (or black hole neutron star) mergers.