2017ApJ...844...42X -
Astrophys. J., 844, 42-42 (2017/July-3)
Radiative heating in the kinetic mode of AGN feedback.
XIE F.-G., YUAN F. and HO L.C.
Abstract (from CDS):
AGN feedback is now widely believed to play a crucial role in the co-evolution between the central black hole and its host galaxy. Two feedback modes have been identified, namely the radiative and kinetic modes, which correspond to the luminous AGNs and low-luminosity AGNs (LLAGNs), respectively. In this paper, we investigate the radiative heating in the kinetic mode. This process is potentially important because (1) the radiation power of LLAGNs is higher than the jet power over a wide parameter range, (2) the spectral energy distribution of LLAGNs is such that the radiative heating is more effective compared to that of luminous AGNs with the same luminosity, and (3) most of the time in the lifecycle of an AGN is spent in the LLAGNs phase. In this paper, adopting the characteristic broadband spectral energy distributions of LLAGNs, we calculate the value of "Compton temperature" (TC), which determines the radiative heating by Compton scattering. We find that TC∼(5–15)×107 K, depending on the spectrum of individual LLAGNs and at which distance from the black hole we evaluate the heating. We also compare this heating process with other radiative heating and cooling processes such as photoionization/recombination. Our result can be used for an accurate calculation of the radiative heating in the study of AGN feedback.
Abstract Copyright:
© 2017. The American Astronomical Society. All rights reserved.
Journal keyword(s):
accretion, accretion disks - galaxies: active - galaxies: Seyfert - galaxies: Seyfert
Simbad objects:
15
Full paper
View the references in ADS
To bookmark this query, right click on this link: simbad:2017ApJ...844...42X and select 'bookmark this link' or equivalent in the popup menu