Hostname: page-component-848d4c4894-sjtt6 Total loading time: 0 Render date: 2024-06-30T02:01:50.039Z Has data issue: false hasContentIssue false

Fully analytical solutions for Bondi accretion in galaxies with a central Black Hole

Published online by Cambridge University Press:  07 April 2020

Luca Ciotti
Affiliation:
Department of Physics and Astronomy, University of Bologna, via Gobetti 93/2, 40129 Bologna, Italy email: luca.ciotti@unibo.it
Silvia Pellegrini
Affiliation:
Department of Physics and Astronomy, University of Bologna, via Gobetti 93/2, 40129 Bologna, Italy email: luca.ciotti@unibo.it
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The fully analytical solution for isothermal Bondi accretion on a black hole (MBH) at the center of JJ two-component Jaffe (1983) galaxy models is presented. In JJ models the stellar and total mass density distributions are described by the Jaffe profile, with different scale-lengths and masses, and to which a central MBH is added; all the relevant stellar dynamical properties can also be derived analytically. In these new accretion solutions the hydrodynamical and stellar dynamical properties are linked by imposing that the gas temperature is proportional to the virial temperature of the stellar component. The formulae that are provided allow to evaluate all flow properties, and are then useful for estimates of the accretion radius and the mass flow rate when modeling accretion on MBHs at the center of galaxies.

Type
Contributed Papers
Copyright
© International Astronomical Union 2020

References

Bondi, H., 1952, MNRAS 112, 195CrossRefGoogle Scholar
Ciotti, L., & Ziaee Lorzad, A. 2018, MNRAS 473, 5476 (CZ18)CrossRefGoogle Scholar
Ciotti, L., & Pellegrini, S. 2017, ApJ 848, 29 (CP17)CrossRefGoogle Scholar
Jaffe, W., 1983, MNRAS 202, 995CrossRefGoogle Scholar
Korol, V., Ciotti, L., & Pellegrini, S. 2016, MNRAS 460, 1188 (KCP16)CrossRefGoogle Scholar
Navarro, J. F., Frenk, C. S., & White, S. D. M. 1997, ApJ 490, 493CrossRefGoogle Scholar