Understanding the distribution of obscuring material and molecular gas
in active galactic nuclei (AGNs) is crucial for revealing the
relationship between the torus structure and nuclear activity. In this
talk, I will present recent findings based on simultaneous spectral
fitting in the X-ray and mid-infrared (mid-IR) ranges, as well as
observations of warm and cold molecular gas using the James Webb Space
Telescope (JWST) and the Atacama Large Millimeter/Submillimeter Array
(ALMA).
Our analysis of 24 nearby Seyfert galaxies has revealed correlations
between the physical properties of the obscuring material and key AGN
parameters, such as the Eddington ratio and black hole mass. The
combination of X-ray and mid-IR models has proven effective in
constraining the geometry of the obscuring material and resolving
parameter degeneracies. Additionally, new observations of the Seyfert
galaxy MCG-05-23-16 reveal a stratification of molecular gas, where
colder gas resides in rotational structures. In comparison, warmer gas
exhibits more disturbed kinematics, potentially linked to stellar
feedback and nuclear activity.
Our findings highlight the potential synergy between JWST and ALMA
observations in advancing the study of molecular gas in galaxies. They
also encourage the application of our simultaneous fitting techniques to
a larger sample and the incorporation of data from facilities like JWST
and XRISM to reinforce the connection between the obscuring material
properties of AGNs and their host galaxies.
