Kanata optical and X-ray monitoring of Gamma-ray emitting Narrow-Line Seyfert 1 and Radio galaxies

TL;DR

This study uses optical and X-ray monitoring to analyze the emission components of gamma-ray emitting Narrow-Line Seyfert 1 and radio galaxies, revealing phases dominated by either disk or jet emissions with weak correlation to brightness.

Contribution

It provides new insights into the emission behaviors of RL-NLSy1s through simultaneous optical and X-ray observations, highlighting their disk and jet dominance phases.

Findings

RL-NLSy1s exhibit both disk- and jet-dominant phases in optical emission.

Weak correlation between brightness and emission phase.

Gamma-ray-loud and quiet RL-NLSy1s show similar optical behaviors.

Abstract

Broadband spectrum of AGN consists of multiple components such as jet emission and accretion disk emission. Temporal correlation study is useful to understand emission components and their physical origins. We have performed optical monitoring using Kanata telescope for 4 radio galaxies and 6 radio-loud Narrow-Line Seyfert 1 (RL-NLSy1): 2 gamma-ray-loud RL-NLSy1s, 1H 0323+342 and PMN J0948+0022, and 4 gamma-ray-quiet RL-NLSy1s. From these results, it is suggested that RL-NLSy1s show a disk-dominant phase and a jet-dominant phase in the optical band, but it is not well correlated with brightness.