English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Solar inertial modes: Observations, identification, and diagnostic promise

Gizon, L., Cameron, R. H., Bekki, Y., Birch, A., Bogart, R., Sacha Brun, A., et al. (2021). Solar inertial modes: Observations, identification, and diagnostic promise. Astronomy and Astrophysics, 652: L6. doi:10.1051/0004-6361/202141462.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Gizon, Laurent1, Author              
Cameron, Robert H.1, Author              
Bekki, Yuto1, Author              
Birch, Aaron1, Author              
Bogart, R.S., Author
Sacha Brun, A., Author
Damiani, Cilia1, Author              
Fournier, Damien1, Author              
Hyest, L.1, Author
Jain, K., Author
Lekshmi, B.1, Author
Liang, Zhi-Chao1, Author              
Proxauf, Bastian1, Author              
Affiliations:
1Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832287              

Content

show
hide
Free keywords: Sun: rotation / Sun: oscillations / Sun: interior / Sun: helioseismology / Sun: general
 Abstract: The oscillations of a slowly rotating star have long been classified into spheroidal and toroidal modes. The spheroidal modes include the well-known 5-min acoustic modes used in helioseismology. Here we report observations of the Sun’s toroidal modes, for which the restoring force is the Coriolis force and whose periods are on the order of the solar rotation period. By comparing the observations with the normal modes of a differentially rotating spherical shell, we are able to identify many of the observed modes. These are the high-latitude inertial modes, the critical-latitude inertial modes, and the equatorial Rossby modes. In the model, the high-latitude and critical-latitude modes have maximum kinetic energy density at the base of the convection zone, and the high-latitude modes are baroclinically unstable due to the latitudinal entropy gradient. As a first application of inertial-mode helioseismology, we constrain the superadiabaticity and the turbulent viscosity in the deep convection zone.

Details

show
hide
Language(s): eng - English
 Dates: 2021
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1051/0004-6361/202141462
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Les Ulis Cedex A France : EDP Sciences
Pages: - Volume / Issue: 652 Sequence Number: L6 Start / End Page: - Identifier: ISSN: 1432-0746
ISSN: 0004-6361
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1