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Simulations of the solar near-surface layers with the CO5BOLD, MURaM, and Stagger codes

Beeck, Benjamin; Collet, R; Steffen, Matthias; Asplund, Martin; Cameron, R H; Freytag, Bernd; Hayek, W; Ludwig, Hans-Gunter; Schussler, Manfred

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Context: Radiative hydrodynamic simulations of solar and stellar surface convection have become an important tool for exploring the structure and gas dynamics in the envelopes and atmospheres of late-type stars and for improving our understanding of the formation of stellar spectra. Aims: We quantitatively compare results from three-dimensional, radiative hydrodynamic simulations of convection near the solar surface generated with three numerical codes (CO 5 BOLD, MURaM, and Stagger) and...[Show more]

dc.contributor.authorBeeck, Benjamin
dc.contributor.authorCollet, R
dc.contributor.authorSteffen, Matthias
dc.contributor.authorAsplund, Martin
dc.contributor.authorCameron, R H
dc.contributor.authorFreytag, Bernd
dc.contributor.authorHayek, W
dc.contributor.authorLudwig, Hans-Gunter
dc.contributor.authorSchussler, Manfred
dc.date.accessioned2015-12-13T22:22:35Z
dc.identifier.issn0004-6361
dc.identifier.urihttp://hdl.handle.net/1885/72311
dc.description.abstractContext: Radiative hydrodynamic simulations of solar and stellar surface convection have become an important tool for exploring the structure and gas dynamics in the envelopes and atmospheres of late-type stars and for improving our understanding of the formation of stellar spectra. Aims: We quantitatively compare results from three-dimensional, radiative hydrodynamic simulations of convection near the solar surface generated with three numerical codes (CO 5 BOLD, MURaM, and Stagger) and different simulation setups in order to investigate the level of similarity and to cross-validate the simulations. Methods.For all three simulations, we considered the average stratifications of various quantities (temperature, pressure, flow velocity, etc.) on surfaces of constant geometrical or optical depth, as well as their temporal and spatial fluctuations. We also compared observables, such as the spatially resolved patterns of the emerging intensity and of the vertical velocity at the solar optical surface as well as the center-to-limb variation of the continuum intensity at various wavelengths. Results: The depth profiles of the thermodynamical quantities and of the convective velocities as well as their spatial fluctuations agree quite well. Slight deviations can be understood in terms of differences in box size, spatial resolution and in the treatment of non-gray radiative transfer between the simulations. Conclusions: The results give confidence in the reliability of the results from comprehensive radiative hydrodynamic simulations. � ESO 2012.
dc.publisherSpringer
dc.rightsAuthor/s retain copyright
dc.sourceAstronomy and Astrophysics
dc.subjectKeywords: Radiative transfer; Stars; Convective velocity; Hydrodynamic simulation; Near-surface layers; Spatial fluctuation; Spatial resolution; Spatially resolved; Temporal and spatial; Thermodynamical quantities; Hydrodynamics Photosphere - convection; Radiative transfer - hydrodynamics - sun
dc.titleSimulations of the solar near-surface layers with the CO5BOLD, MURaM, and Stagger codes
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume539
dc.date.issued2012
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationf5625xPUB3183
local.identifier.ariespublicationu4630950xPUB60
local.type.statusPublished Version
local.contributor.affiliationBeeck, Benjamin, Max-Planck-Institut für Sonnensystemforschung
local.contributor.affiliationCollet, R, Max Planck Institute for Astrophysics
local.contributor.affiliationSteffen, Matthias, Leibniz-Institut für Astrophysik
local.contributor.affiliationAsplund, Martin, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationCameron, R H, Max-Planck-Institut für Sonnensystemforschung
local.contributor.affiliationFreytag, Bernd, Université de Lyon
local.contributor.affiliationHayek, W, University of Exeter
local.contributor.affiliationLudwig, Hans-Gunter, ZAH, Landessternwarte
local.contributor.affiliationSchussler, Manfred, Max-Planck-Institut für Sonnensystemforschung
local.bibliographicCitation.startpageA121
local.identifier.doi10.1051/0004-6361/201118252
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2016-02-24T09:06:29Z
local.identifier.scopusID2-s2.0-84862638611
local.identifier.thomsonID000303262000128
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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