Radio constraints on the volume filling factors of AGN winds
arXiv:0904.0209 · doi:10.1111/j.1365-2966.2009.14856.x
Abstract
The calculation of mass outflow rates of AGN winds is of great importance in understanding the role that such winds play in AGN-galaxy feedback processes. The mass outflow rates are, however, difficult to estimate since the volume filling factors of the winds are unknown. In this paper, we use constraints imposed by the observed radio emission to obtain upper limits to the volume filling factors of wind components in certain nearby AGN. We do this by predicting the 1.4 GHz radio flux densities emitted by those components, assuming a uniform wind, and then comparing these with the observed flux densities for each AGN at this frequency. We find that the upper limits to the volume filling factors are in the range 10^{-4}-0.5.
6 pages, accepted by MNRAS
References in corpus (10)
- Simultaneous X-ray/optical/UV snapshots of active galactic nuclei from XMM-Newton: spectral energy distributions for the reverberation mapped sample
- On the origin of radio emission in radio quiet quasars
- A soft X-ray study of Type I AGN observed with Chandra HETGS
- An absorption origin for the X-ray spectral variability of MCG-6-30-15
- Absorption Measure Distribution of the Outflow in IRAS 13349+2438: Direct Observation of Thermal Instability?
- The impact of accretion disk winds on the X-ray spectrum of AGN: Part 2 - XSCORT + Hydrodynamic Simulations
- On the origin of radio core emission in radio-quiet quasars
- An axisymmetric, hydrodynamical model for the torus wind in AGN
- A new model for the Warm Absorber in NGC 3783: a single medium in total pressure equilibrium
- Properties of X-ray selected Broad Absorption Line Quasars
Cited by in corpus (13)
- A 10 kpc Scale Seyfert Galaxy Outflow: HST/COS Observations of IRAS F22456-5125
- What drives the radio slopes in radio quiet quasars?
- Modeling optical and UV polarization of AGNs III. From uniform-density to clumpy regions
- Powerful outflows in the central parsecs of the low-luminosity Active Galactic Nucleus NGC 1386
- A Candidate Dual AGN at z=1.175
- A Radio Polarimetric Study to Disentangle AGN Activity and Star-Formation in Seyfert Galaxies
- VLBI Imaging of the Double Peaked Emission Line Seyfert KISSR1494
- A Curved 150 Parsec Long Jet in the Double-Peaked Emission-Line AGN KISSR 434
- The filamentary radio lobes of the Seyfert-Starburst composite galaxy NGC3079
- Double-Peaked Emission Lines due to A Radio Outflow in KISSR1219
- XRISM Spectroscopy of Accretion-Driven Wind Feedback in NGC 4151
- Radio and X-ray emission from disc winds in radio-quiet quasars
- Hard - X-rays selected Active Galactic Nuclei. I. A radio view at high-frequencies