The photometric monitoring of γ-ray-loud narrow-line Seyfert 1 galaxy 1H 0323+342 from 2006 to 2010

• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2017,（7）
• 页码范围: 47-56
• 页数: 10页
• 语种: 英文
• DOI: 10.1088/1674-4527/17/7/68

摘要

1H 0323+342 is a γ-ray-loud narrow-line Seyfert 1 galaxy (NLS 1).The variability mechanism of γ-ray-loud NLS1s remains unclear.We have observed 1H 0323+342 photometrically from 2006 to 2010 with a total of 41 nights of observations in order to constrain the variability mechanism.Intraday variabilities (IDVs) are detected on four nights.When considering the nights with time spans ＞ 2 hours,the duty cycle is 28.3％.The average variability amplitude is 10.8％ for IDVs and possibly variable nights.In the color-magnitude diagram,there are bluer-when-brighter chromatic trends for intraday and long-term timescales,which could be explained by the shock-in-jet model,and also could possibly be due to two distinct components or an accretion disk model.