MS: Felix Pötzl & Thalia Traianou

/MS: Felix Pötzl & Thalia Traianou

MS: Felix Pötzl & Thalia Traianou


Event Details


……………………………………………………………….1st (Chair: Marilyn Cruces)……………………………………………………………….

Speaker: Felix Pötzl
Title: “Magnetic fields in AGN jets”
Abstract:

Supermassive black holes (SMBHs) in the centres of radio-loud active galactic nuclei (AGN) produce collimated relativistic outflows (jets). Very Long Baseline Interferometry (VLBI) observations are needed to study the spatial origin and launching mechanism of those jets, where magnetic fields are thought to play a major role. Space-VLBI observations within the RadioAstron key science program on AGN polarization provide images at an unprecedented resolution (up to 50 microarcseconds), which enables us to study the magnetic field strength and morphology in the innermost regions of AGN jets.
In this talk about my ongoing thesis project, I will outline the main characteristics of VLBI observations and data reduction as well as the importance of magnetic fields for the AGN phenomemon, and give an example with the strong blazar 3C345.

……………………………………………………………….2nd (Chair: Felix Pötzl)……………………………………………………………….

Speaker: Thalia Traiamou
Title: “Resolving the Innermost Jet Region of Radio Quasars 3C454.3 and TXS 2013+370″
Abstract:

Blazars are among the most powerful and variable known astrophysical objects. The very long baseline interferometry (VLBI) technique provides the opportunity to directly look deep into the heart of these compact objects and probe the physical processes that occur in close vicinity to the central engine. In this talk, we will present new results from (1) a kinematic and polarizationstudy of the quasar 3C454.3, and (2) a case study of the gamma ray flaring events which occurred in the compact blazar TXS 2013+370 during the period 2003 2017. The latter allows us to give an estimation of the high energy emission location.

2018-05-28T11:24:49+00:00