Abstract
This is a review of the literature on narrow line Seyfert 1 (NLS) active galaxies. They are treated as a complex of structures, processes, and factors including: a place in a large-scale structure, the morphology of the host galaxy, both on a large scale and in the region near the nucleus, broad line region (BLR) and narrow line region (NLR) structures, accretion disks, jets, circumnuclear outflows, rotation of supermassive black holes, etc. Special attention is devoted to current ideas regarding the evolutionary status of objects of this type. The main difference between NLS and classical Seyfert galaxies of the first kind is shown to be the morphology of the central region and the parameters of the central engine. NLS are characterized by pseudobulges that develop as a result of secular evolution, and the morphology of their nuclear dust spirals is more regular. The pseudobulges explain the deviation of NLS from the scaling relationships for galaxies with classical bulges. The black holes in these kinds of objects appear to have lower masses and higher spins, and this affects the efficiency with which relativistic jets are launched.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
