中文
相关论文

相关论文: AGN polarization modeling with STOKES

200 篇论文

We have used the STOKES radiative transfer code, to model polarization induced by dust scattering in the polar regions of Active Galactic Nuclei (AGN). We discuss the wavelength-dependence of the spectral intensity and polarization over the…

天体物理学 · 物理学 2007-05-23 Rene W. Goosmann , C. Martin Gaskell , M. Shoji

In this first research note of a series of two, we present a comparison between two Monte Carlo radiative transfer codes: MontAGN and STOKES. Both were developed in order to better understand the observed polarisation of Active Galactic…

One of the main challenges for polarimetric observations of active galactic nuclei (AGN) is to properly estimate the amount of parasitic light that contaminates the polarization signal. Removing this unpolarized flux is a complex task that…

高能天体物理现象 · 物理学 2018-08-15 F. Marin

[abridged] We investigate the effects of various AGN scattering region geometries on the polarized flux. We introduce a new, publicly available Monte Carlo radiative transfer code, Stokes, which models polarization induced by scattering off…

天体物理学 · 物理学 2011-01-31 Rene W. Goosmann , C. Martin Gaskell

I present polarization modelling of Active Galactic Nuclei in the optical/UV range. The modelling is conducted using the Monte-Carlo radiative transfer code Stokes, which self-consistently models the polarization signature of a complex…

天体物理学 · 物理学 2007-12-13 Rene W. Goosmann

A growing body of evidence suggests that part of, if not all, scattering regions of active galactic nuclei (AGNs) are clumpy. Hence. in this paper, we run radiative transfer models in the optical/UV for a variety of AGN reprocessing regions…

高能天体物理现象 · 物理学 2015-05-06 F. Marin , R. W. Goosmann , C. M. Gaskell

We model the spectropolarimetric signature resulting from the radiative coupling between the innermost parts of active galactic nuclei (AGNs). We use a new public version of STOKES, a Monte Carlo radiative transfer code presented in the…

高能天体物理现象 · 物理学 2015-06-11 F. Marin , R. W. Goosmann , C. M. Gaskell , D. Porquet , M. Dovciak

The STOKES Monte Carlo radiative transfer code has been extended to model the velocity dependence of the polarization of emission lines. We use STOKES to present improved modelling of the velocity-dependent polarization of broad emission…

高能天体物理现象 · 物理学 2015-06-17 Rene W. Goosmann , C. Martin Gaskell , Frederic Marin

We present a broad analysis of X-ray polarimetric observational prospects for radio-quiet active galactic nuclei (AGN), focusing on the role of parsec-scale components. We provide a revision of self-consistent type-1 and type-2 generic AGN…

高能天体物理现象 · 物理学 2023-10-25 J. Podgorný , F. Marin , M. Dovčiak

Context: Active galactic nuclei (AGN) are anisotropic objects surrounded by an optically thick equatorial medium whose true geometry still defy observers. Aims: In this paper, we aim to explore the optical, scattering-induced, polarization…

星系天体物理 · 物理学 2017-11-15 F. Marin , M. Schartmann

In this second research note of a series of two, we present the first near-infrared results we obtained when modeling Active Galactic Nuclei (AGN). Our first proceedings showed the comparison between the MontAGN and STOKES Monte Carlo…

星系天体物理 · 物理学 2016-10-18 F. Marin , L. Grosset , R. Goosmann , D. Gratadour , D. Rouan , Y. Clénet , D. Pelat , P. Andrea Rojas Lobos

Polarization is an important tool to further the understanding of interstellar dust and the sources behind it. In this paper we describe our implementation of polarization that is due to scattering of light by spherical grains and electrons…

天体物理仪器与方法 · 物理学 2017-05-10 Christian Peest , Peter Camps , Marko Stalevski , Maarten Baes , Ralf Siebenmorgen

We investigate the emission of active galactic nuclei (AGN) dusty tori in the infrared domain. Following theoretical predictions coming from hydrodynamical simulations, we model the dusty torus as a 3D two-phase medium with high-density…

宇宙学与河外天体物理 · 物理学 2012-02-29 Marko Stalevski , Jacopo Fritz , Maarten Baes , Theodoros Nakos , Luka C. Popovic

We explore physically self-consistent models of dusty molecular tori in Active Galactic Nuclei (AGN) with the goal of interpreting VLTI observations and fitting high resolution mid-IR spectral energy distributions (SEDs). The input dust…

天体物理学 · 物理学 2009-11-10 Marc Schartmann , Klaus Meisenheimer , Max Camenzind , Sebastian Wolf , Thomas Henning

Since it became publicly available in 2004, the radiative transfer code STOKES has been used to model the spectroscopic, polarimetric, timing and imaging signatures for different astrophysical scenarios. Ten years later, at the release of a…

星系天体物理 · 物理学 2014-09-26 F. Marin , R. W. Goosmann

We present the DIRTY radiative transfer model in this paper and a companion paper. This model computes the polarized radiative transfer of photons from arbitrary distributions of stars through arbitrary distributions of dust using Monte…

天体物理学 · 物理学 2009-10-31 Karl D. Gordon , K. A. Misselt , Adolf N. Witt , Geoffrey C. Clayton

Aims: We present POLARIS (POLArized RadIation Simulator), a newly developed three-dimensional Monte-Carlo radiative transfer code. POLARIS was designed to calculate dust temperature, polarization maps, and spectral energy distributions. It…

天体物理仪器与方法 · 物理学 2016-09-28 Stefan Reissl , Sebastian Wolf , Robert Brauer

A thermal active galactic nucleus (AGN) consist of a powerful, broad-band continuum source that is surrounded by several reprocessing media with different geometries and compositions. Here we investigate the expected spectropolarimetric…

高能天体物理现象 · 物理学 2012-04-05 Frederic Marin , Rene W. Goosmann

Aims: In this paper, we aim to constrain the properties of dust structures in the central first parsecs of Active Galactic Nuclei (AGN). Our goal is to study the required optical depth and composition of different dusty and ionised…

星系天体物理 · 物理学 2018-05-02 Lucas Grosset , Daniel Rouan , Damien Gratadour , Didier Pelat , Jan Orkisz , Frédéric Marin , René Goosmann

We describe improved modelling of the emission by dust in a toroidal--like structure heated by a central illuminating source within Active Galactic Nuclei (AGN). We chose a simple but realistic torus geometry, a flared disc, and a dust…

天体物理学 · 物理学 2009-11-13 J. Fritz , A. Franceschini , E. Hatziminaoglou
‹ 上一页 1 2 3 10 下一页 ›