A Role and a Structure of the Magnetic Field in Jets, Hotspots and Lobes of Radio Galaxies
by
Lukasz Stawarz(KIPAC, Stanford University, USA)
→
Europe/Stockholm
Nordita
Nordita
Description
In this talk we will review theoretical predictions, observational constraints, as well as the most recent results of the numerical simulations regarding a role and a structure of the magnetic field in extragalactic jets. This role manifests in (i) launching of the
jet from a spinning black hole surrounded by an accretion disk, (ii) providing collimation, confinement and stability of the outflow as it propagates up to Mpc distances from the central engine, and (iii) producing very high energy ultrarelativistic particles responsible for the observed broad-band (radio-to-gamma-ray) non-thermal jet emission. Different arguments for and against a dynamical domination of the magnetic field in extragalactic jets at different scales will be summarized, and prospects for better understanding of the jet magnetic field structure with the forthcoming new observational data and numerical experiments will be discussed.
