Radiative heating in the hot/kinetic mode of AGN feeback by low-luminosity AGNs
| Main Author: | Xie,Fu-Guo |
|---|---|
| Format: | info Proceeding |
| Terbitan: |
, 2019
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/3542428 |
Daftar Isi:
- Presentation file for IAUS 356 -- Nuclear Activity of Galaxies over Cosmic Time. AGN feedback is widely believed to play a crucial role in the coevolution of black hole and its host galaxy. Two feedback modes have been identified, one is the radiative mode of luminous AGNs and the other is the kinetic mode of low-luminosity AGNs (LLAGNs). We investigate radiative heating in the kinetic mode. This process is potentially important because (1) the distinctive spectral shape of LLAGNs makes it more effective in heating the gas compared to that of luminous AGNs at same luminosity, and (2) LLAGN is the most common phase during the lifecycle of an AGN. We calculate the value of ``Compton temperature'' $\tc$ and find that $\tc\sim (5-15)\times 10^7$ K, depending on the spectrum of individual LLAGNs and at which distance from the black hole we evaluate the heating. Our result can be used for an accurate calculation of the radiative heating of LLAGNs in the study of AGN feedback.