Warm Absorbers in Active Galactic Nuclei: A Multitemperature Wind

By Julian Krolik, G. Kriss. 2001

203 citations recorded by the source corpus.

View Paper: https://www.semanticscholar.org/paper/47944e5fbfdbeadb4f40d6eeef4c102038263a52

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 soft X-ray/NLR connection: a single photoionized medium? (2005, background): “Such a distribution may naturally arise as a result of thermal instabilities in outflows (Krolik & Kriss 2001).”
Fueling Low-Level AGN Activity through Stochastic Accretion of Cold Gas (2006, background): “…processes universally yield a multi-temperature, clumpy, filled wind structure (Begelman & McKee 1983; Konigl & Kartje 1994) which provides a good representation of the various components and spectral properties of observed outflows (e.g., Krolik & Kriss 2001; Dopita et al. 2002; Ogle et al. 2003).”
The Ionized Gas and Nuclear Environment in NGC 3783. IV. Variability and Modeling of the 900 Kilosecond Chandra Spectrum (2003, background): “Krolik & Kriss (2001) considered multiphase, warm-absorber winds and noted the various locations of stable, overheated and overcooled gas.”
Toward a Self-Consistent Model of the Ionized Absorber in NGC 3783 (2003, background): “The case has been made on both sides (for complexity: Baldwin et al. 1996; Korista et al. 1996; Krolik & Kriss 2001; for underlying order: Mathur, Elvis & Wilkes 1995; Elvis 2000; Arav et al. 2003).”
Unification of X-ray winds in Seyfert galaxies: from ultra-fast outflows to warm absorbers (2012, background): “…still significant uncertainties on the exact location of this material, which ranges from ∼pc up to ∼kpc scales, and it has been suggested that it might originate outside of the inner disc, probably at locations comparable with the obscuring torus (e.g. Krolik & Kriss 2001; Blustin et al. 2005).”
Simultaneous X-ray and UV spectroscopy of the Seyfert galaxy NGC 5548 - II. Physical conditions in the X-ray absorber (2005, background): “Ionization codes, like XSTAR (Kallman & Krolik 1999) predict a specific ionization range for which pressure equilibrium can occur (Krolik & Kriss 2001).”
The Ionized Gas and Nuclear Environment in NGC 3783. I. Time-averaged 900 Kilosecond Chandra Grating Spectroscopy (2002, unknown): “The alternative approach of having a single medium with gradientsof ionization, density, and outflow velocity instead of separate absorbers (e.g., Krolik & Kriss 2001) requires detailed modeling and will not be discussed here.”
The Compact, Conical, Accretion-Disk Warm Absorber of the Seyfert 1 Galaxy NGC 4051 and Its Implications for IGM-Galaxy Feedback Processes (2007, background): “Proposals span a factor > 106 in radius and include (a) the Narrow Line Region1(e.g. Kinkhabwala et al. 2002; Ogle et al. 2004), (b) the inner edge of the ‘obscuring torus’ (Krolik & Kriss 2001) , and (c) the accretion disk itself (Elvis 2000).”
Quasars: the characteristic spectrum and the induced radiative heating (2003, background): “Different kinds of observation do reveal significant quantities of warm (T ∼ 104.5–106 K) ionized gas located at distances from possibly a fraction of a pc up to hundreds of pc from the nuclei of Seyfert galaxies (e.g. Krolik & Kriss 2001).”
XMM-Newton Reflection Grating Spectrometer Observations of Discrete Soft X-Ray Emission Features from NGC 1068 (2002, background): “In X-ray–emitting plasmas, such a density distribution may naturally arise in outflows because of thermal instabilities (Krolik & Kriss 2001), which may counter the usual perception of such instabilities on the presence of specific ions in the unstable region (see x 7.5).”
The nature and origin of Seyfert warm absorbers (2004, background): “Krolik & Kriss (2001) that the inner edge of the torus is ∼1× L0.”
The Parsec-Scale Radio Structure of NGC 1068 and the Nature of the Nuclear Radio Source (2004, background): “This wind might naturally produce the warm, electron scattering mirror of NGC 1068, as modeled in some greater detail by Krolik & Kriss (1995, 2001).”