https://research.chalmers.se/publication/522515
A parsec-scale faint jet in the nearby changing-look Seyfert galaxy Mrk 590
Broad Balmer emission lines in active galactic nuclei (AGN) may display dramatic changes in amplitude, even disappearance and re-appearance in some sources. As...
in theseyfert galaxyparsecscalefaint
https://elmi.hbku.edu.qa/en/publications/optical-outbursts-in-the-seyfert-galaxy-ngc-1275/
Optical outbursts in the Seyfert galaxy NGC 1275 - Hamad Bin Khalifa University
hamad bin khalifaseyfert galaxyopticaloutburstsngc