Skip navigation
Skip navigation

The Amplitude of Solar p-mode Oscillations from Three-dimensional Convection Simulations

Zhou, Yixiao; Asplund, Martin; Collet, Remo

Description

The amplitude of solar p-mode oscillations is governed by stochastic excitation and mode damping, both of which take place in the surface convection zone. However, the time-dependent, turbulent nature of convection makes it difficult to self-consistently study excitation and damping processes through the use of traditional one-dimensional (1D) hydrostatic models. To this end, we carried out ab initio three-dimensional (3D), hydrodynamical numerical simulations of the solar atmosphere to...[Show more]

dc.contributor.authorZhou, Yixiao
dc.contributor.authorAsplund, Martin
dc.contributor.authorCollet, Remo
dc.date.accessioned2021-05-07T03:51:14Z
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/1885/232538
dc.description.abstractThe amplitude of solar p-mode oscillations is governed by stochastic excitation and mode damping, both of which take place in the surface convection zone. However, the time-dependent, turbulent nature of convection makes it difficult to self-consistently study excitation and damping processes through the use of traditional one-dimensional (1D) hydrostatic models. To this end, we carried out ab initio three-dimensional (3D), hydrodynamical numerical simulations of the solar atmosphere to investigate how p-modes are driven and dissipated in the Sun. The description of surface convection in the simulations is free from the tunable parameters typically adopted in traditional 1D models. Mode excitation and damping rates are computed based on analytical expressions whose ingredients are evaluated directly from the 3D model. With excitation and damping rates both available, we estimate the theoretical oscillation amplitude and frequency of maximum power, ${\nu }_{\max }$, for the Sun. We compare our numerical results with helioseismic observations, finding encouraging agreement between the two. The numerical method presented here provides a novel way to investigate the physical processes responsible for mode driving and damping, and should be valid for all solar-type oscillating stars.
dc.description.sponsorshipM.A. gratefully acknowledges funding from the Australian Research Council (grant DP150100250). Funding for the Stellar Astrophysics Centre is provided by The Danish National Research Foundation (grant agreement no.: DNRF106).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherIOP Publishing
dc.rights© 2019 The American Astronomical Society
dc.sourceThe Astrophysical Journal
dc.subjectconvection
dc.subjectmethods: numerical
dc.subjecthydrodynamics
dc.subjectSun: atmosphere
dc.subjectSun: helioseismology
dc.subjectSun: oscillations
dc.titleThe Amplitude of Solar p-mode Oscillations from Three-dimensional Convection Simulations
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume880
dcterms.dateAccepted2019-05-30
dc.date.issued2019-07-18
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.absfor020109 - Space and Solar Physics
local.identifier.absfor080110 - Simulation and Modelling
local.identifier.ariespublicationu3102795xPUB4470
local.publisher.urlhttps://iopscience.iop.org/
local.type.statusPublished Version
local.contributor.affiliationZhou, Yixiao, College of Science, ANU
local.contributor.affiliationAsplund, Martin, College of Science, ANU
local.contributor.affiliationCollet, Remo, Aarhus Universitet
local.description.embargo2099-12-31
dc.relationhttp://purl.org/au-research/grants/arc/DP150100250
local.bibliographicCitation.issue13
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage10
local.identifier.doi10.3847/1538-4357/ab262c
local.identifier.absseo970108 - Expanding Knowledge in the Information and Computing Sciences
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2020-12-27T07:25:51Z
local.identifier.scopusID2-s2.0-85071955926
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Zhou_The_Amplitude_of_Solar_p-mode_2019.pdf874.7 kBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator