Subparsec-scale dynamics of a dusty gas disk exposed to anisotropic AGN radiation with frequency-dependent radiative transfer
| Autor: | Daisuke Namekata, Masayuki Umemura |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Active galactic nucleus
Infrared Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences 0103 physical sciences Radiative transfer Astrophysics::Solar and Stellar Astrophysics 010306 general physics 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Physics High Energy Astrophysical Phenomena (astro-ph.HE) Supermassive black hole Astronomy and Astrophysics Torus Radius Astrophysics - Astrophysics of Galaxies Radiation pressure Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Sublimation (phase transition) Astrophysics::Earth and Planetary Astrophysics Astrophysics - High Energy Astrophysical Phenomena |
| Popis: | We explore the gas dynamics near the dust sublimation radius of active galactic nucleus (AGN). For the purpose, we perform axisymmetric radiation hydrodynamic simulations of a dusty gas disk of radius $\approx 1\,\mathrm{pc}$ around a supermassive black hole of mass $10^{7}\,\mathrm{M_{\odot}}$ taking into account (1) anisotropic radiation of accretion disk, (2) X-ray heating by corona, (3) radiative transfer of infrared (IR) photons reemitted by dust, (4) frequency dependency of direct and IR radiations, and (5) separate temperatures for gas and dust. As a result, we find that for Eddington ratio $\approx 0.77$, a nearly neutral, dense ($\approx 10^{6\operatorname{-}8}\;\mathrm{cm^{-3}}$), geometrically-thin ($h/r 40 pages, 33 figures, 7 tables; accepted for publication in Monthly Notices of the Royal Astronomical Society |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|