The helicity constraint in spherical shell dynamos

被引：9

作者：

Brandenburg, A. ^{[1
]}

Kapyla, P. J. ^{[1
,2
]}

Mitra, D. ^{[3
]}

Moss, D. ^{[4
]}

Tavakol, R. ^{[3
]}

机构：

[1] NORDITA, SE-10691 Stockholm, Sweden

[2] Univ Helsinki, FI-00014 Helsinki, Finland

[3] Univ London Queen Mary Coll, Sch Math Sci, London E1 4NS, England

[4] Univ Manchester, Sch Math, Manchester M13 9PL, Lancs, England

来源：

ASTRONOMISCHE NACHRICHTEN | 2007年 / 328卷 / 10期

基金：

英国科学技术设施理事会;

关键词：

magnetohydrodynamics (MHD); turbulence;

D O I：

10.1002/asna.200710881

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The motivation for considering distributed large scale dynamos in the solar context is reviewed in connection with the magnetic helicity constraint. Preliminary accounts of 3-dimensional direct numerical simulations (in spherical shell segments) and simulations of 2-dimensional mean field models (in spherical shells) are presented. Interesting similarities as well as some differences are noted. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

收藏

页码：1118 / 1121

页数：4

相关论文

共 13 条

[1] Dynamic nonlinearity in large-scale dynamos with shear [J].

Blackman, EG ;

Brandenburg, A .

ASTROPHYSICAL JOURNAL, 2002, 579 (01) :359-373

[2] The case for a distributed solar dynamo shaped by near-surface shear [J].

Brandenburg, A .

ASTROPHYSICAL JOURNAL, 2005, 625 (01) :539-547

[3] Strong mean field dynamos require supercritical helicity fluxes [J].

Brandenburg, A ;

Subramanian, K .

ASTRONOMISCHE NACHRICHTEN, 2005, 326 (06) :400-408

[4]

BRANDENBURG A, 2007, NJPH, V9, P1

[5] Dynamo action in the solar convection zone and tachocline: Pumping and organization of toroidal fields [J].

Browning, Matthew K. ;

Miesch, Mark S. ;

Brun, Allan Sacha ;

Toomre, Juri .

ASTROPHYSICAL JOURNAL, 2006, 648 (02) :L157-L160

[6] Global-scale turbulent convection and magnetic dynamo action in the solar envelope [J].

Brun, AS ;

Miesch, MS ;

Toomre, J .

ASTROPHYSICAL JOURNAL, 2004, 614 (02) :1073-1098

[7] What is the source of the magnetic helicity shed by CMEs?: The long-term helicity budget of AR 7978 [J].

Démoulin, P ;

Mandrini, CH ;

van Driel-Gesztelyi, L ;

Thompson, BJ ;

Plunkett, S ;

Kovári, Z ;

Aulanier, G ;

Young, A .

ASTRONOMY & ASTROPHYSICS, 2002, 382 (02) :650-665

[8] A Babcock-Leighton flux transport dynamo with solar-like differential rotation [J].

Dikpati, M ;

Charbonneau, P .

ASTROPHYSICAL JOURNAL, 1999, 518 (01) :508-520

[9] Solar dynamo models with α-effect and turbulent pumping from local 3D convection calculations [J].

Kapyla, P. J. ;

Korpi, M. J. ;

Tuominen, I. .

ASTRONOMISCHE NACHRICHTEN, 2006, 327 (09) :884-894

[10]

KLEEORIN N, 1995, ASTRON ASTROPHYS, V297, P159