A Technique to Infer Magnetic Topology at Mars and Its Application to the Terminator Region

2019 ◽  
Vol 124 (3) ◽  
pp. 1823-1842 ◽  
Author(s):  
Shaosui Xu ◽  
Tristan Weber ◽  
David L. Mitchell ◽  
David A. Brain ◽  
Christian Mazelle ◽  
...  
Keyword(s):  
Magnetic Topology ◽  
Terminator Region

Magnetic topology at Venus: new insights into the Venus plasma environment

2021 ◽  
Author(s):  
Shaosui Xu ◽  
Rudy A. Frahm ◽  
Yingjuan Ma ◽  
Janet G. Luhmann ◽  
David L. Mitchell
Keyword(s):  
Magnetic Topology ◽  
Plasma Environment

scholarly journals On the magnetic topology of partially and fully convective stars

2009 ◽  
Vol 496 (3) ◽  
pp. 787-790 ◽  
Author(s):  
A. Reiners ◽  
G. Basri
Keyword(s):  
Magnetic Topology

scholarly journals The Magnetic Topology and Eruption Mechanism of a Multiple-ribbon Flare

2020 ◽  
Vol 901 (1) ◽  
pp. 13
Author(s):  
Ye Qiu ◽  
Yang Guo ◽  
Mingde Ding ◽  
Ze Zhong
Keyword(s):  
Magnetic Topology

scholarly journals Evolution and magnetic topology of the M 1.0 flare of October 22, 2002

2004 ◽  
Vol 423 (3) ◽  
pp. 1119-1131 ◽  
Author(s):  
A. Berlicki ◽  
B. Schmieder ◽  
N. Vilmer ◽  
G. Aulanier ◽  
G. Del Zanna
Keyword(s):  
Magnetic Topology

scholarly journals Numerical modeling of the magnetic topology near Mars auroral observations

2007 ◽  
Vol 34 (24) ◽  
Author(s):  
M. W. Liemohn ◽  
Y. Ma ◽  
A. F. Nagy ◽  
J. U. Kozyra ◽  
J. D. Winningham ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Magnetic Topology

Physical design of a new set of high poloidal mode number coils in the EAST tokamak

2022 ◽  
Author(s):  
Liang Liao ◽  
Yunfeng Liang ◽  
Shaocheng Liu ◽  
Huaxiang Zhang ◽  
Xiang Ji ◽  
...  
Keyword(s):  
Magnetic Topology ◽  
Magnetic Perturbation ◽  
Perturbation Field ◽  
Low Field ◽  
Flexible Working ◽  
Magnetic Spectrum ◽  
Edge Localized Mode ◽  
Field Edge ◽  
Localized Mode ◽  
Spectrum Characteristic

Abstract An external resonant magnetic perturbation (RMP) field, an effective method to mitigate or suppress the edge localized mode (ELM), has been planned to be applied on the ELM control issue in ITER. A new set of magnetic perturbation coils, named as high m coils, has been developed for the EAST tokamak. The magnetic perturbation field of the high m coils is localized in the midplane of the low field side (LFS), with a spectrum characteristic of high m and wide n, where m and n are the poloidal and toroidal mode numbers, respectively. The high m coils generates a strong localized perturbation field. Edge magnetic topology under the application of high m coils should have either a small or no stochastic region. With the combination of the high m coils and the current RMP coils, flexible working scenarios of the magnetic perturbation field are available, which is beneficial for ELM control exploration on EAST. Numerical simulations have been carried out to characterize the high m coil system, including the magnetic spectrum and magnetic topology, which shows a great flexibility of magnetic perturbation variation as a tool to investigate the interaction between ELM and external magnetic perturbation.

MAGNETIC TOPOLOGY OF BUBBLES IN QUIESCENT PROMINENCES

2012 ◽  
Vol 761 (1) ◽  
pp. 9 ◽  
Author(s):  
J. Dudík ◽  
G. Aulanier ◽  
B. Schmieder ◽  
M. Zapiór ◽  
P. Heinzel
Keyword(s):  
Magnetic Topology

scholarly journals Magnetic Topology and Current Sheet Formation

1989 ◽  
Vol 104 (2) ◽  
pp. 277-280
Author(s):  
Spiro K. Antiochos
Keyword(s):  
Magnetic Field ◽  
Current Sheet ◽  
Field Line ◽  
Complex Network ◽  
Rapid Heating ◽  
Negative Polarity ◽  
Coronal Magnetic Field ◽  
Coronal Heating ◽  
Magnetic Topology ◽  
Magnetic Null

AbstractWe describe a mechanism for coronal heating. The basic idea is that since the photospheric flux is observed to consist of a complex pattern of positive and negative polarity regions, the topology of the coronal magnetic field (in particular the connectivity) must be discontinuous over a complex network of surfaces and magnetic null points in the corona. Consequently, photospheric motions of the field line footpoints, even if arbitrarily smooth, result in discontinuous stressing of the field. This produces coronal current sheets, reconnection at the null points, and rapid heating.

scholarly journals Planet migration and magnetic torques

2015 ◽  
Vol 11 (A29A) ◽  
pp. 14-18
Author(s):  
A. Strugarek ◽  
A. S. Brun ◽  
S. P. Matt ◽  
V. Reville
Keyword(s):  
Numerical Experiments ◽  
Three Dimensional ◽  
Magnetic Star ◽  
Magnetic Topology ◽  
Global Models ◽  
Planet Migration ◽  
Order Of Magnitude ◽  
Ideal Magnetohydrodynamic ◽  
The Impact ◽  
The Ideal

AbstractThe possibility that magnetic torques may participate in close-in planet migration has recently been postulated. We develop three dimensional global models of magnetic star-planet interaction under the ideal magnetohydrodynamic (MHD) approximation to explore the impact of magnetic topology on the development of magnetic torques. We conduct twin numerical experiments in which only the magnetic topology of the interaction is altered. We find that magnetic torques can vary by roughly an order of magnitude when varying the magnetic topology from an aligned case to an anti-aligned case. Provided that the stellar magnetic field is strong enough, we find that magnetic migration time scales can be as fast as ~100 Myr. Hence, our model supports the idea that magnetic torques may participate in planet migration for some close-in star-planet systems.

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