Magnetic helicity conservation

被引：0
|
作者：
Berger, Mitchell A. [1 ]
机构：
[1] UCL, London WC1E 6BT, England
来源：
HIGHLIGHTS OF ASTRONOMY, VOL 13 | 2005年 / 13卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Magnetic Helicity measures basic structural properties of magnetic fields such as twist, shear, linking, writhe, and handedness. It is conserved in ideal MHD and approximately conserved during reconnection. The minimum energy state of a field with a given magnetic helicity is a linear force free field. Helicity plays an important role in MHD turbulence and dynamo theory, and provides a valuable observational tool in solar and space physics. Helicity conservation can be tracked from the solar dynamo to active regions to coronal mass ejections to magnetic clouds in interplanetary space.
引用
下载
收藏
页码：85 / 88
页数：4
相关论文
共 50 条
  • [31] HELICITY CONSERVATION VIA THE NOETHER THEOREM
    YAHALOM, A
    JOURNAL OF MATHEMATICAL PHYSICS, 1995, 36 (03) : 1324 - 1327
  • [32] Helicity and spin conservation in linearized gravity
    Sajad Aghapour
    Lars Andersson
    Reebhu Bhattacharyya
    General Relativity and Gravitation, 2021, 53
  • [33] HELICITY CONSERVATION AND MESON DIFFRACTION DISSOCIATION
    BERGER, EL
    DONOHUE, JT
    PHYSICAL REVIEW D, 1977, 15 (03): : 790 - 806
  • [34] Helicity conservation via the Noether theorem
    Yahalom, A.
    Journal of Friction and Wear, 1994, 15 (04)
  • [35] HELICITY CONSERVATION IN PHOTOPRODUCTION OF RHO MESON
    MOFFEIT, KC
    BINGHAM, HH
    FRETTER, WB
    GRAVES, WR
    PODOLSKY, WJ
    RABIN, MS
    ROSENFEL.AH
    WINDOMOL.R
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1970, 15 (04): : 580 - &
  • [36] Helicity Conservation for Mie Optical Cavities
    Olmos-Trigo, Jorge
    Zambrana-Puyalto, Xavier
    PHYSICAL REVIEW APPLIED, 2022, 18 (04)
  • [37] Optical Helicity and Chirality: Conservation and Sources
    Crimin, Frances
    Mackinnon, Neel
    Goette, Joerg B.
    Barnett, Stephen M.
    APPLIED SCIENCES-BASEL, 2019, 9 (05):
  • [38] Helicity conservation under Reidemeister moves
    Bouzarth, EL
    Pfister, H
    AMERICAN JOURNAL OF PHYSICS, 2006, 74 (02) : 141 - 144
  • [39] Helicity and spin conservation in linearized gravity
    Aghapour, Sajad
    Andersson, Lars
    Bhattacharyya, Reebhu
    GENERAL RELATIVITY AND GRAVITATION, 2021, 53 (11)
  • [40] HELICITY CONSERVATION AT HIGH-ENERGIES
    HARA, Y
    LETTERE AL NUOVO CIMENTO, 1972, 4 (05): : 157 - &
12345