In the past few decades, radio surveys have provided us with unique insights into many areas of astrophysics, such as star formation, supernovae, active galactic nuclei, pulsars, cosmology and much more. A vital aspect of these surveys is the Very Long Baseline Interferometry (VLBI) technique, which can provide some of the highest resolutions possible in astronomy. This method has made crucial...
Supermassive black hole (SMBH) binaries form due to galaxy mergers. The final coalesce of such SMBH pairs are the sources of gravitational waves. When the SMBHs are accreting, they form pair of AGN which are known as dual or binary AGN. A large sample of AGN pairs at different separations can help us to understand the SMBH growth as well as the evolution of galaxies. However the number of such...
Optical observations of active galactic nuclei (AGNs) often reveal kpc-scale [O III] outflows that align with radio jet directions. These outflows, particularly in the inner nuclear regions, might have relatively high temperatures and powers, produce detectable free-free emissions and form non-thermal shocks in complex nuclear regions. The nearby dwarf galaxy NGC 4395 hosts an AGN with an...
The process of jet formation and collimation in Active Galactic Nuclei (AGN) as well as their interaction with the host galaxy are still key open problems despite decades of astrophysical studies. While cm- and mm-VLBI studies have made progress in understanding jet collimation in strongly Doppler-boosted one-sided jets, the symmetry of these systems and the interplay with the properties of...
