Abstract Details

Name: Parveen Kumar
Affiliation: Physical Research Laboratory (PRL)
Conference ID: ASI2021_504
Title : Optical micro-variability in radio-loud narrow line Seyfert 1 galaxies (RL-NLS1s).
Authors and Co-Authors : Parveen Kumar (PRL), Veeresh Singh (PRL)
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : Recent studies have revealed that radio-loud Narrow-line Seyfert 1 galaxies (RL-NLS1s) possesing powerful radio jets are likely to be more common than that thought earlier. Therefore, RL-NLS1s present a challenge for the relativistic jet paradigm, which states that powerful radio jets are associated exclusively with very high SMBHs. RL-NLS1s known to host low black hole masses with high accretion rates are suitable candidates for the probes on the formation of powerful radio jets in a regime different from broad-line radio-loud AGN. Also, unlike blazars, radio jets in RL-NLS1s can be viewed at much larger angles, and therefore it unclear if all RL-NLS1s are intrinsically radio-loud or appear radio-loud due to beaming effect. Optical monitoring can be used as a complementary tool to infer the presence of relativistic jets in RL-NLS1s. AGN with relativistic jets aligned close to the line-of-sight are expected to exhibit Intra-night optical variability (INOV) due to the beaming effect. In my presentation I aim to focus on the recent observational attempts to detect and understand INOV in a variety of RL-NLS1s.