Query : 2004A&A...416..423H

2004A&A...416..423H - Astronomy and Astrophysics, volume 416, 423-435 (2004/3-3)

A model for electromagnetic extraction of rotational energy and formation of accretion-powered jets in radio galaxies.


Abstract (from CDS):

A self-similar solution for the 3D axi-symmetric radiative MHD equations is presented, which revisits the formation and acceleration of accretion-powered jets in AGNs and microquasars. The model relies primarily on electromagnetic extraction of rotational energy from the disk plasma and forming a geometrically thin super-Keplerian layer between the disk and the overlying corona. The outflowing plasma in this layer is dissipative, two-temperature, virial-hot, advective and electron-proton dominated. The innermost part of the disk in this model is turbulent-free, sub-Keplerian rotating and advective-dominated. This part ceases to radiate as a standard disk, and most of the accretion energy is converted into magnetic and kinetic energies that go into powering the jet. The corresponding luminosities of these turbulent-truncated disks are discussed. In the case of a spinning black hole accreting at low accretion rates, the Blandford-Znajek process is found to modify the total power of the jet, depending on the accretion rate.

Abstract Copyright:

Journal keyword(s): galaxies: jets - black hole physics - accretion, accretion disks - magnetohydrodynamics - radiative transfer

Simbad objects: 2

goto Full paper

goto View the reference in ADS

Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
1 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6441 3
2 3C 279 Bla 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2799 2

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2004A&A...416..423H and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact