Radiative Transfer and Acceleration in Magnetocentrifugal Winds

By J. E. Everett. 2005

159 citations recorded by the source corpus.

Detailed photoionization and radiative acceleration of self-similar magnetocentrifugal accretion disk winds are explored. First, a general-purpose hybrid magnetocentrifugal and radiatively driven wind model is defined. Solutions are then examined to determine how radiative acceleration modifies magnetocentrifugal winds and how those winds can influence radiative driving in active galactic nuclei. For the models studied here, both radiative acceleration by bound-free ("continuum driving") and bound-bound ("line driving") processes are found to be important, although magnetic driving dominates the mass outflow rate for the Eddington ratios studied (L/LEdd = 0.001-0.1). The solutions show that shielding by a magnetocentrifugal wind can increase the efficiency of a radiatively driven wind, and also that within a magnetocentrifugal wind, radiative acceleration is sensitive to both the column in the shield, the column of the wind, and the initial density at the base of the wind.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/cb3bcbcf0aa9a06190b894f8087363824a2f10f6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

Citations in the corpus

The Effect of Radiation Pressure on Virial Black Hole Mass Estimates and the Case of Narrow-Line Seyfert 1 Galaxies (2008, methodology): “…upon observational evidence for outflows in the BLR, alternative models have been proposed in which part of the BLR is in the form of a disk wind (e.g. Murray & Chiang 1995; Chiang & Murray 1996; Elvis 2000; Collin & Huré 2001; Proga et al. 2000; Proga 2007; Everett 2005 and references therein).”
Unification of X-ray winds in Seyfert galaxies: from ultra-fast outflows to warm absorbers (2012, background): “Some attempts in this direction have been reported in the literature (Proga 2000, 2003; Everett 2005; Ohsuga et al. 2009; Reynolds 2012).”
Evolution of broad-line emission from active galactic nuclei (2013, background): “Such a structure arises naturally in the disk-wind scenario, which involves the outflow of clouds embedded in a hydromagnetic disk wind (Emmering et al. 1992; Königl & Kartje 1994; Kartje & Königl 1996; Bottorff et al. 1997, 2000; Everett 2005).”
UNIFICATION OF LUMINOUS TYPE 1 QUASARS THROUGH C iv EMISSION (2010, background): “For a general introduction to AGN outflows see Blandford & Payne (1982), Proga et al. (2000), Everett (2005), and references therein.”
An Exploratory Chandra Survey of a Well-defined Sample of 35 Large Bright Quasar Survey Broad Absorption Line Quasars (2006, result): “This situation, where the amount of shielding affects the velocity of the outflow, is generally consistent with the models of Everett (2005) of accretion-disk winds driven by both magnetocentrifugal and radiative forces (J. Everett, 2005, priv. comm.).”
OUTFLOWS FROM ACTIVE GALACTIC NUCLEI: KINEMATICS OF THE NARROW-LINE AND CORONAL-LINE REGIONS IN SEYFERT GALAXIES, (2011, background): “…mechanisms, radiative pressure, magnetic fields, and thermal winds fail in explaining the gradual acceleration over the inner 100 pc, reaching terminal velocities at distances < 10 pc from the central source (Everett 2005; Chelouche & Netzer 2005; Das et al. 2007; Everett & Murray 2007).”
The Compact, Conical, Accretion-Disk Warm Absorber of the Seyfert 1 Galaxy NGC 4051 and Its Implications for IGM-Galaxy Feedback Processes (2007, result): “All our estimates for the physical and geometrical quantities of the two X-ray absorbers of NGC 4051 are consistent with this scenario, and recent magnetohydrodynamical simulations also favor this interpretation (Everett 2005).”
The AGN-obscuring Torus: The End of the “Doughnut” Paradigm? (2006, unknown): “1999; Everett 2005).”
THREE-DIMENSIONAL SIMULATIONS OF DYNAMICS OF ACCRETION FLOWS IRRADIATED BY A QUASAR (2007, background): “…& Payne 1982; Pelletier & Pudritz 1992 Königl 1993; Emmering, Blandford & Shlosman 1992; Contopoulos & Lovelace 1994; Königl & Kartje 1994; Contopoulos 1995; de Kool & Begelman 1995; Bottorff et al. 1997; Bottorff, Korista & Shlosman 2000; Everett, Königl, & Arav 2002; Proga 2003; Everett 2005).”