Interaction of the relativistic jet and the narrow-line region of PMN J0948+0022

In the study of active galactic nuclei (AGN), some sources have been extensively observed across various epochs and wavelengths.

PMN J0948+0022 is one such source, displaying significant multi wavelength variability that has provided valuable insights into AGN structure and contributed to our understanding of this entire class. Initially, PMN J0948+0022 was classified as a jetted Narrow-Line Seyfert 1 (NLS1) galaxy.

However, recent observations have revealed a different profile for the Hβ line, characteristic of Intermediate Seyfert galaxies (IS). After verifying the robustness of this profile change, we conducted a standard analysis of the SDSS, X-Shooter, and MUSE spectra of the source.

Our analysis indicated a more significant variability in the narrow-line region (NLR) compared to the broad-line region (BLR), which we interpreted as an interaction between the NLR and the relativistic jet.
These findings provide new insights into the changing-look AGN phenomena, illustrating how different AGN classes can be interconnected and enhancing our understanding of AGN evolution.

Referente locale: Claudia Raiteri