E-Print Archive

There are 4499 abstracts currently viewable.


Advanced Search
Main Page Add New E-Print Submitter
News Help/FAQ About Preferences
Manage Key Phrase
Spoke-like differential rotation in a convective dynamo with a coronal envelope View all abstracts by submitter

Axel Brandenburg   Submitted: 2013-12-07 02:00

We report on the results of four convective dynamo simulations with an outer coronal layer. The magnetic field is self-consistently generated by the convective motions beneath the surface. Above the convection zone, we include a polytropic layer that extends to 1.6 solar radii. The temperature increases in this region to times the value at the surface, corresponding to ~1.6 times the value at the bottom of the spherical shell. We associate this region with the solar corona. We find solar-like differential rotation with radial contours of constant rotation rate, together with a near-surface shear layer. This non-cylindrical rotation profile is caused by a non-zero latitudinal entropy gradient that offsets the Taylor-Proudman balance through the baroclinic term. The meridional circulation is multi-cellular with a solar-like poleward flow near the surface at low latitudes. In most of the cases, the mean magnetic field is oscillatory with equatorward migration in two cases. In other cases, the equatorward migration is overlaid by stationary or even poleward migrating mean fields.

Authors: J. Warnecke, P. J. Käpylä, Maarit. J. Mantere, A. Brandenburg
Projects: None

Publication Status: Astrophys. J. 778, 141 (2013)
Last Modified: 2013-12-09 09:11
Go to main E-Print page  Similarities and Distinctions in Cosmic-Ray Modulation during Different Phases of Solar and Magnetic Activity Cycles  A swirling flare-related EUV jet  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

Go to main E-Print pageGo to main E-Print page.
Previous AbstractPrevious Abstract.
Next AbstractNext Abstract.
Download PreprintDownload Preprint.
Submitter's HomepageSubmitters Homepage.
Edit EntryEdit Entry.
View All Abstracts By SubmitterView all abstracts by submitter.
Delete AbstractDelete abstract.

Latest Entries
Small-scale solar jet formation and their associated waves and instabilities
Invited Review: Short-term Variability with the Observations from the Helioseismic and Magnetic Imager (HMI) Onboard the Solar Dynamics Observatory (SDO): Insights into Flare Magnetism
A first look at the submillimeter Sun with ALMA
Data-driven modeling of solar coronal magnetic field evolution and eruptions
Properties and Energetics of Magnetic Reconnection: I. Evolution of Flare Ribbons
A new look at the frequency-dependent damping of slow-mode waves in the solar corona
What determines active region coronal plasma composition?
Characteristics and evolution of sheath and leading edge structures of interplanetary coronal mass ejections in the inner heliosphere based on Helios and Parker Solar Probe observations
Slow magnetoacoustic oscillations in stellar coronal loops
Kink Oscillation of a Flux Rope During a Failed Solar Eruption
A publicly available multi-observatory data set of an enhanced network patch from the Photosphere
Type IV Radio Bursts and Associated Active Regions in the Sunspot Cycle 24
Theory of Fluid Instabilities in Partially Ionized Plasmas: An Overview
Quasiperiodic Energy Release and Jets at the Base of Solar Coronal Plumes
The Coupling of an EUV Coronal Wave and Ion Acceleration in a Fermi-LAT Behind-the-Limb Solar Flare
Reconciling Power Law Slopes in Solar Flare and Nanoflare Size Distributions
A Model of Homologous Confined and Ejective Eruptions Involving Kink Instability and Flux Cancellation
Detection of stellar-like abundance anomalies in the slow solar wind
Magnetosheath jet occurrence rate in relation to CMEs and SIRs
Microwave Perspective on Magnetic Breakout Eruption

Related Pages
MSU Solar Physics.
Max Millennium Science Mail Archive.
Max Millennium Message of the Day Mail Archive.
Max Millennium Flare Catalog

Archive Maintainer
Alisdair Davey

© 2000-2020 Solar Physics Group - Montana State University