scholarly journals Analyses of 3D Structure of Magnetic Flux Ropes via Global MHD Simulations

2008 ◽  
Vol 28 (6) ◽  
pp. 38-46 ◽  
Author(s):  
Daisuke Matsuoka ◽  
Ken T. Murata ◽  
Shigeru Fujita ◽  
Takashi Tanaka ◽  
Kazunori Yamamoto ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
3D Structure ◽  
Magnetic Flux Ropes ◽  
Mhd Simulations ◽  
Flux Ropes

scholarly journals A new technique for observationally derived boundary conditions for space weather

2018 ◽  
Vol 8 ◽  
pp. A26 ◽  
Author(s):  
Paolo Pagano ◽  
Duncan Hendry Mackay ◽  
Anthony Robinson Yeates
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Boundary Conditions ◽  
Space Weather ◽  
Weather Forecasting ◽  
Interplanetary Space ◽  
Time Dependent ◽  
Magnetic Flux Ropes ◽  
Mhd Simulations ◽  
Flux Ropes

Context. In recent years, space weather research has focused on developing modelling techniques to predict the arrival time and properties of coronal mass ejections (CMEs) at the Earth. The aim of this paper is to propose a new modelling technique suitable for the next generation of Space Weather predictive tools that is both efficient and accurate. The aim of the new approach is to provide interplanetary space weather forecasting models with accurate time dependent boundary conditions of erupting magnetic flux ropes in the upper solar corona. Methods. To produce boundary conditions, we couple two different modelling techniques, MHD simulations and a quasi-static non-potential evolution model. Both are applied on a spatial domain that covers the entire solar surface, although they extend over a different radial distance. The non-potential model uses a time series of observed synoptic magnetograms to drive the non-potential quasi-static evolution of the coronal magnetic field. This allows us to follow the formation and loss of equilibrium of magnetic flux ropes. Following this a MHD simulation captures the dynamic evolution of the erupting flux rope, when it is ejected into interplanetary space. Results.The present paper focuses on the MHD simulations that follow the ejection of magnetic flux ropes to 4 R⊙. We first propose a technique for specifying the pre-eruptive plasma properties in the corona. Next, time dependent MHD simulations describe the ejection of two magnetic flux ropes, that produce time dependent boundary conditions for the magnetic field and plasma at 4 R⊙ that in future may be applied to interplanetary space weather prediction models. Conclusions. In the present paper, we show that the dual use of quasi-static non-potential magnetic field simulations and full time dependent MHD simulations can produce realistic inhomogeneous boundary conditions for space weather forecasting tools. Before a fully operational model can be produced there are a number of technical and scientific challenges that still need to be addressed. Nevertheless, we illustrate that coupling quasi-static and MHD simulations in this way can significantly reduce the computational time required to produce realistic space weather boundary conditions.

Toward Understanding the 3D Structure and Evolution of Magnetic Flux Ropes in an Extremely Long Duration Eruptive Flare

2017 ◽  
Vol 851 (2) ◽  
pp. 133 ◽  
Author(s):  
Zhenjun Zhou ◽  
Jie Zhang ◽  
Yuming Wang ◽  
Rui Liu ◽  
Georgios Chintzoglou
Keyword(s):  
Magnetic Flux ◽  
3D Structure ◽  
Magnetic Flux Ropes ◽  
Long Duration ◽  
Flux Ropes

scholarly journals Dual-spacecraft observation of large-scale magnetic flux ropes in the Martian ionosphere

2011 ◽  
Vol 116 (A2) ◽  
pp. n/a-n/a ◽  
Author(s):  
D. D. Morgan ◽  
D. A. Gurnett ◽  
F. Akalin ◽  
D. A. Brain ◽  
J. S. Leisner ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Large Scale ◽  
Magnetic Flux Ropes ◽  
Flux Ropes ◽  
Martian Ionosphere

scholarly journals Understanding the Twist Distribution Inside Magnetic Flux Ropes by Anatomizing an Interplanetary Magnetic Cloud

2018 ◽  
Vol 123 (5) ◽  
pp. 3238-3261 ◽  
Author(s):  
Yuming Wang ◽  
Chenglong Shen ◽  
Rui Liu ◽  
Jiajia Liu ◽  
Jingnan Guo ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Magnetic Cloud ◽  
Magnetic Flux Ropes ◽  
Flux Ropes

scholarly journals Investigating 1st and 2nd order Fermi acceleration of energetic particles by small-scale magnetic flux ropes at 1AU

2020 ◽  
Vol 1620 ◽  
pp. 012008
Author(s):  
J A le Roux ◽  
G M Webb ◽  
O V Khabarova ◽  
K T Van Eck ◽  
L-L Zhao ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Energetic Particles ◽  
Small Scale ◽  
Fermi Acceleration ◽  
Magnetic Flux Ropes ◽  
Flux Ropes

scholarly journals Editorial: Magnetic Flux Ropes: From the Sun to the Earth and Beyond

2020 ◽  
Vol 7 ◽  
Author(s):  
Rui Liu ◽  
Jie Zhang ◽  
Yuming Wang ◽  
Hongqiang Song
Keyword(s):  
Magnetic Flux ◽  
The Sun ◽  
Magnetic Flux Ropes ◽  
The Earth ◽  
Flux Ropes

scholarly journals Possible Cool Prominence Materials Detected within Interplanetary Small Magnetic Flux Ropes

2019 ◽  
Vol 876 (1) ◽  
pp. 57 ◽  
Author(s):  
J. M. Wang ◽  
H. Q. Feng ◽  
H. B. Li ◽  
A. K. Zhao ◽  
Z. J. Tian ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Magnetic Flux Ropes ◽  
Flux Ropes
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