Speaker
Description
Relativistic jets observed in active galactic nuclei and produced by supermassive black holes are highly sensitive to the structure and dynamics of their surrounding magnetic fields. In this talk, I will argue that these magnetospheres are shaped not only by internally generated magnetic fields - such as those from the accretion disk, as typically theorized - but also by external fields. Interactions with ambient magnetic fields, whether from neighboring astrophysical objects or the host galaxy itself, can lead to significant changes in jet properties. Specifically, the interplay between the field components can reorient jets, cause them to dissipate, or even quench their propagation entirely. I will present findings demonstrating that even the relatively weak magnetic field of the host galaxy can profoundly impact jet dynamics at parsec scales. This mechanism offers a potential explanation for the observed diversity in active galactic nucleus (AGN) jet activity, including the distinction between radio-loud and radio-quiet AGNs.