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Radiative feedback of low-Lbol/LEdd AGNs

Published online by Cambridge University Press:  29 January 2021

Fu-Guo Xie
Fu-Guo Xie*
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, 80 Nandan Road, Shanghai200030, China email: fgxie@shao.ac.cn
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Abstract

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AGN feedback, through either radiation or kinematics by expelled medium, plays a crucial role in the coevolution of supermassive black hole (SMBH) and its host galaxy. The nuclei spend most of their time as low-luminosity AGNs (LLAGNs), whose spectra are distinctive to bright AGNs, and the feedback is the hot mode (also named kinetic mode). We thus investigate the radiative heating in the hot mode. We calculate the value of “Compton temperature” Tc, which defines the heating capability of the radiation at given flux, and find that Tc∼(5−15)×107 K, depending on the spectrum of individual LLAGNs. This work provides a cheap way to include the radiative heating of LLAGNs in the study of AGN feedback.

Keywords

galaxies: Seyfertgalaxies: evolutionaccretion, accretion disks
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S356: Nuclear Activity in Galaxies Across Cosmic Time , October 2019 , pp. 189 - 193
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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