Intra-night optical variability and radio characteristics of extremely radio-loud narrow-line Seyfert 1 galaxies

Veeresh Singh, Parveen Kumar, Avik Kumar Das +1

Narrow-line Seyfert 1 galaxies (NLS1s) are generally known to be radio-quiet Active Galactic Nuclei (AGN), but a tiny subset of them are found to be extremely radio-loud with radio…