ROTATION AND STABILITY OF THE TOROIDAL MAGNETIC FIELD IN STELLAR RADIATION ZONES

被引：9
|
作者：
Bonanno, Alfio [1 ,2 ]
Urpin, Vadim [1 ,3 ,4 ]
机构：
[1] Osserv Astrofis Catania, INAF, I-95123 Catania, Italy
[2] Ist Nazl Fis Nucl, Sez Catania, I-95123 Catania, Italy
[3] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[4] Isaac Newton Inst Chile, Branch St Petersburg, St Petersburg 194021, Russia
来源：
ASTROPHYSICAL JOURNAL | 2013年 / 766卷 / 01期
关键词：
instabilities; magnetohydrodynamics (MHD); stars: magnetic field; Sun: interior; PROTONEUTRON STAR DYNAMOS; ADIABATIC STABILITY; INSTABILITY; CONVECTION; INTERIORS; BUOYANCY; PULSARS;
D O I：
10.1088/0004-637X/766/1/52
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The stability of the magnetic field in radiation zones is of crucial importance for mixing and angular momentum transport in the stellar interior. We consider the stability properties of stars containing a predominant toroidal field in spherical geometry by means of a linear stability in the Boussinesq approximation taking into account the effect of thermal conductivity. We calculate the growth rate of instability and analyze in detail the effects of stable stratification and heat transport. We argue that the stabilizing influence of gravity can never entirely suppress the instability caused by electric currents in radiation zones. However, the stable stratification can essentially decrease the growth rate of instability.
引用
收藏
页数：9
相关论文
共 50 条
  • [1] STABILITY OF THE TOROIDAL MAGNETIC FIELD IN STELLAR RADIATION ZONES
    Bonanno, Alfio
    Urpin, Vadim
    ASTROPHYSICAL JOURNAL, 2012, 747 (02)
  • [2] Stability of toroidal magnetic fields in rotating stellar radiation zones
    Kitchatinov, L. L.
    Ruediger, G.
    ASTRONOMY & ASTROPHYSICS, 2008, 478 (01) : 1 - 8
  • [3] Stability of the toroidal magnetic field in rotating stars
    Bonanno, A.
    Urpin, V.
    ASTRONOMY & ASTROPHYSICS, 2013, 552
  • [4] Stability of toroidal magnetic fields in stellar interiors
    Ibanez-Mejia, J. C.
    Braithwaite, J.
    ASTRONOMY & ASTROPHYSICS, 2015, 578
  • [5] On magnetic instabilities and dynamo action in stellar radiation zones
    Zahn, J.-P.
    Brun, A. S.
    Mathis, S.
    ASTRONOMY & ASTROPHYSICS, 2007, 474 (01) : 145 - 154
  • [6] Rotational suppression of the Tayler instability in stellar radiation zones
    Bonanno, A.
    Urpin, V.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 431 (04) : 3663 - 3669
  • [7] ON THE STABILITY OF A GENERAL MAGNETIC FIELD TOPOLOGY IN STELLAR RADIATIVE ZONES
    Augustson, K.
    Mathis, S.
    Strugarek, A.
    ASTRO FLUID 2016, 2019, 82 : 365 - 371
  • [8] Nonlinear simulations of magnetic instabilities in stellar radiation zones: The role of rotation and shear
    Brun, A. S.
    ASTRONOMISCHE NACHRICHTEN, 2007, 328 (10) : 1137 - 1141
  • [9] Instability of magnetized and differentially rotating stellar radiation zones with high magnetic Mach number
    Ruediger, G.
    Schultz, M.
    Kitchatinov, L. L.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 456 (03) : 3004 - 3010
  • [10] Low-frequency internal waves in magnetized rotating stellar radiation zones I. Wave structure modification by a toroidal field
    Mathis, S.
    de Brye, N.
    ASTRONOMY & ASTROPHYSICS, 2011, 526
12345