Spectral Variation of NLS1 Galaxy PMN J0948+0022

Journal of astrophysics and astronomy

Jin Zhang3 2²  S. N. Zhang3²  X. N. Sun1¹  E. W. Liang1¹  Y. Lu² 

[1] Department of Physics and GXU-NAOC Centre for Astrophysics and Space Sciences, Guangxi University, Nanning 530004, China.$$;National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China.$$

关键词: Galaxies: active;    galaxies: individual: PMN J0948+0022;    galaxies: Seyfert;    galaxies: jets;    𝛾-rays;    theory.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

Four well-sampled Spectral Energy Distributions (SEDs) of PMN J0948+0022 are fitted with the syn+SSC+EC model to derive the physical parameters of its jets and to investigate the spectral variations of its SEDs. A tentative correlation between the peak luminosity (𝐿c) and peak frequency (𝑣c) of its inverse Compton (IC) bump is found in both the observer and co-moving frames, indicating that the variations of luminosity are accompanied by the spectral shift. A correlation between 𝐿cs and 𝛿 is found, and thus the magnification of external photon field by the bulk motion of the radiation regions is an essential reason for the spectral variation since, IC bump of PMN J0948+0022 is dominated by the EC process.

【 授权许可】

Unknown