| Name: | PARIKSHIT PARTHA BISWAS |
| Affiliation: | Nicolaus Copernicus Astronomical Center, Warszawa, Poland |
| Conference ID : | ASI2024_287 |
| Title : | Internal heating effects of disk atmosphere in AGNs and it’s influence on the iron line complex |
| Authors : | Parikshit P. Biswas 1, Agata Różańska 1, Dominik Gronkiewicz 1 |
| Authors Affiliation: | 1 Nicolaus Copernicus Astronomical Center |
| Mode of Presentation: | Oral |
| Abstract Category : | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract : | The iron line complex is one of the major spectral features observed in the X-ray domain of active galactic nuclei (AGN) that helps to study the geometry of accretion in those sources. Different parameter range is studied to understand the formation of the iron complex on the basis of ionization processes in the matter structure. We use the photoionization code TITAN to build models and study the changes in the iron line features for a given spectral energy distribution. We calculate the reflected spectrum from the stratified disk atmosphere in AGN. Several options may be considered: pure X-ray illumination from the hot corona, additional mechanical heating in the Comptonized layer, and black body illumination from the bottom of the atmosphere. We present how those assumptions, connected with physical processes in a disk atmosphere, influence the final iron line flux and profile observed in many AGNs. We put constraints on thermodynamical conditions that must be met to achieve the modeled iron line complex in agreement with observations by modern X-ray missions such as XRISM. |
