Speaker
Description
The formation of relativistic jets from active galactic nuclei remains a subject of intense debate. Despite significant advances in understanding the underlying mechanisms, numerous questions remain. To address them, high-angular-resolution observations performed with the very long baseline interferometry (VLBI) technique are needed. In this context, we present preliminary results on 4C +01.28 (B1055+018), a blazar that shows a relevant correlation between emission at radio and gamma-ray wavelengths, and whose previous VLBI observations highlight the presence of a remarkable jet stratification. The latter consists of an inner spine with a transverse magnetic field and a distinct boundary layer - the sheath - with a longitudinal magnetic field. Exploring the properties of this unique jet stratification, alongside the jet magnetization on sub-parsec and parsec scales, is key to unlocking the secrets of the jet launching mechanisms in such a source. Thanks to the synergy between VLBI maps at various frequencies, including new 86 GHz GMVA and 230 GHz EHT observations, and relativistic MHD numerical simulations, 4C +01.28 offers an excellent opportunity for testing state-of-the-art models of jet formation.
| What is your career stage? | Non-tenured scientist (post PhD) |
|---|---|
| Which telescopes do you use / are you affiliated with? | VLBA, EVN, GMVA, EHT |
