Galactic dynamo simulations

被引：0
|
作者：
Elstner, Detlef [1 ]
Gressel, Oliver [1 ]
Ruediger, Guenther [1 ]
机构：
[1] Astrophys Inst Potsdam, D-14482 Potsdam, Germany
来源：
COSMIC MAGNETIC FIELDS: FROM PLANETS, TO STARS AND GALAXIES | 2009年 / 259期
关键词：
ISM: magnetic fields; galaxies: magnetic fields; MAGNETIC SPIRAL ARMS; BARRED GALAXIES; MAGNETOROTATIONAL INSTABILITY; FIELDS; DRIVEN; TURBULENCE; DISKS; SUPERNOVAE; STABILITY; SHEAR;
D O I：
10.1017/S1743921309031135
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recent simulations of supernova-driven turbulence within the ISM support the existence of a large-scale dynamo. With a growth time of about two hundred million years, the dynamo is quite fast - in contradiction to many assertions in the literature. We here present details oil the scaling of the dynamo effect. within the simulations and discuss global mean-field models based on the adopted turbulence coefficients. The results are compared to global simulations of the magneto-rotational instability.
引用
收藏
页码：467 / 478
页数：12
相关论文
共 50 条
  • [41] Galactic spiral arms and dynamo control parameters
    Shukurov, A
    Sokoloff, D
    STUDIA GEOPHYSICA ET GEODAETICA, 1998, 42 (03) : 391 - 396
  • [42] GALACTIC DYNAMO MODELS WITHOUT SHARP BOUNDARIES
    ELSTNER, D
    MEINEL, R
    RUDIGER, G
    GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS, 1990, 50 (1-3): : 85 - 94
  • [43] Sudden termination of Martian dynamo?: Implications from subcritical dynamo simulations
    Kuang, W.
    Jiang, W.
    Wang, T.
    GEOPHYSICAL RESEARCH LETTERS, 2008, 35 (14)
  • [44] Numerical simulations of kinematic dynamo action
    Archontis, V
    Dorch, SBE
    Nordlund, Å
    ASTRONOMY & ASTROPHYSICS, 2003, 397 (02) : 393 - 399
  • [45] Symbolic Computations in Simulations of Hydromagnetic Dynamo
    Vodinchar, Gleb
    Feshchenko, Lyubov
    VIII INTERNATIONAL CONFERENCE SOLAR-TERRESTRIAL RELATIONS AND PHYSICS OF EARTHQUAKE PRECURSORS, 2017, 20
  • [46] NUMERICAL SIMULATIONS FOR THE DRESDYN PRECESSION DYNAMO
    Giesecke, A.
    Albrecht, T.
    Gerbeth, G.
    Gundrum, T.
    Stefani, F.
    MAGNETOHYDRODYNAMICS, 2015, 51 (02): : 293 - 302
  • [47] Star formation and galactic dynamo model with helicity fluxes
    E. A. Mikhailov
    Astronomy Letters, 2014, 40 : 398 - 405
  • [48] Calculations of the dynamo coefficients in galactic magnetic fields with shear
    Otmianowska-Mazur, K
    Hanasz, M
    Kowal, G
    HOW DOES THE GALAXY WORK?: A GALACTIC TERTULIA WITH DON COX AND RON REYNOLDS, 2004, 315 : 303 - 306
  • [49] GALACTIC DYNAMO AND NUCLEOSYNTHESIS LIMIT ON THE DIRAC NEUTRINO MASSES
    ENQVIST, K
    OLESEN, P
    SEMIKOZ, V
    PHYSICAL REVIEW LETTERS, 1992, 69 (15) : 2157 - 2159
  • [50] STELLAR DYNAMO AND THE GALACTIC-X-RAY SOURCES
    BELVEDERE, G
    MOLTENI, D
    ASTRONOMY & ASTROPHYSICS, 1981, 102 (03) : 283 - 286
12345