scholarly journals Comment on “Modeling Extreme “Carrington-Type” Space Weather Events Using Three-Dimensional Global MHD Simulations” by C. M. Ngwira, A. Pulkkinen, M. M. Kuznetsova, and A. Glocer”

2018 ◽  
Vol 123 (2) ◽  
pp. 1388-1392 ◽  
Author(s):  
Bruce T. Tsurutani ◽  
Gurbax S. Lakhina ◽  
Ezequiel Echer ◽  
Rajkumar Hajra ◽  
Chinmaya Nayak ◽  
...  
Keyword(s):  
Space Weather ◽  
Three Dimensional ◽  
Type Space ◽  
Mhd Simulations ◽  
Weather Events

Reply to Comments by Tsurutani et al. on “Modeling Extreme ‘Carrington-Type’ Space Weather Events Using Three-Dimensional Global MHD Simulations”

2018 ◽  
Vol 123 (2) ◽  
pp. 1393-1395 ◽  
Author(s):  
Chigomezyo M. Ngwira ◽  
Antti Pulkkinen ◽  
Maria M. Kuznetsova ◽  
Alex Glocer
Keyword(s):  
Space Weather ◽  
Three Dimensional ◽  
Type Space ◽  
Mhd Simulations ◽  
Weather Events

scholarly journals Modeling extreme “Carrington-type” space weather events using three-dimensional global MHD simulations

2014 ◽  
Vol 119 (6) ◽  
pp. 4456-4474 ◽  
Author(s):  
Chigomezyo M. Ngwira ◽  
Antti Pulkkinen ◽  
Maria M. Kuznetsova ◽  
Alex Glocer
Keyword(s):  
Space Weather ◽  
Three Dimensional ◽  
Type Space ◽  
Mhd Simulations ◽  
Weather Events

scholarly journals Three-Dimensional Parameters of the Earth-Impacting CMEs Based on the GCS Model

Universe ◽  
2021 ◽  
Vol 7 (10) ◽  
pp. 361
Author(s):  
Zhihui Zhong ◽  
Chenglong Shen ◽  
Dongwei Mao ◽  
Yutian Chi ◽  
Mengjiao Xu ◽  
...  
Keyword(s):  
Space Weather ◽  
Aerodynamic Drag ◽  
Three Dimensional ◽  
Space Physics ◽  
Angular Width ◽  
Propagation Time ◽  
Drag Model ◽  
The Earth ◽  
Weather Events ◽  
Dimensional Parameters

When a CME arrives at the Earth, it will interact with the magnetosphere, sometimes causing hazardous space weather events. Thus, the study of CMEs which arrived at Earth (hereinafter, Earth-impacting CMEs) has attracted much attention in the space weather and space physics communities. Previous results have suggested that the three-dimensional parameters of CMEs play a crucial role in deciding whether and when they reach Earth. In this work, we use observations from the Solar TErrestrial RElations Observatory (STEREO) to study the three-dimensional parameters of 71 Earth-impacting CMEs from the middle of 2008 to the end of 2012. We find that the majority Earth-impacting CMEs originate from the region of [30S,30N] × [40E,40W] on the solar disk; Earth-impacting CMEs are more likely to have a central propagation angle (CPA) no larger than half-angular width, a negative correlation between velocity and acceleration, and propagation time is inversely related to velocity. Based on our findings, we develop an empirical statistical model to forecast the arrival time of the Earth-impacting CME. Also included is a comparison between our model and the aerodynamic drag model.

Parametric Study of ICME Properties Related to Space Weather Disturbances via a Series of Three-Dimensional MHD Simulations

Solar Physics ◽  
2019 ◽  
Vol 294 (10) ◽  
Author(s):  
Junmo An ◽  
Tetsuya Magara ◽  
Keiji Hayashi ◽  
Yong-Jae Moon
Keyword(s):  
Space Weather ◽  
Parametric Study ◽  
Three Dimensional ◽  
Mhd Simulations

Ionospheric disturbances in a large area of the terrestrial globe by two strong solar flares of September 6, 2017, the strongest space weather events in the last decade

2020 ◽  
Vol 66 (7) ◽  
pp. 1775-1791
Author(s):  
P.R. Fagundes ◽  
M. Pezzopane ◽  
J.B. Habarulema ◽  
K. Venkatesh ◽  
M.A.L. Dias ◽  
...  
Keyword(s):  
Space Weather ◽  
Solar Flares ◽  
Ionospheric Disturbances ◽  
Large Area ◽  
Weather Events ◽  
Terrestrial Globe

scholarly journals Can Multi-threaded Flux Tubes in Coronal Arcades Support a Magnetohydrodynamic Avalanche?

Solar Physics ◽  
2021 ◽  
Vol 296 (8) ◽  
Author(s):  
J. Threlfall ◽  
J. Reid ◽  
A. W. Hood
Keyword(s):  
Magnetic Fields ◽  
Three Dimensional ◽  
Coronal Loops ◽  
Flux Tubes ◽  
Single Thread ◽  
Mhd Instabilities ◽  
Mhd Instability ◽  
Mhd Simulations ◽  
Ideal Mhd ◽  
Model Geometry

AbstractMagnetohydrodynamic (MHD) instabilities allow energy to be released from stressed magnetic fields, commonly modelled in cylindrical flux tubes linking parallel planes, but, more recently, also in curved arcades containing flux tubes with both footpoints in the same photospheric plane. Uncurved cylindrical flux tubes containing multiple individual threads have been shown to be capable of sustaining an MHD avalanche, whereby a single unstable thread can destabilise many. We examine the properties of multi-threaded coronal loops, wherein each thread is created by photospheric driving in a realistic, curved coronal arcade structure (with both footpoints of each thread in the same plane). We use three-dimensional MHD simulations to study the evolution of single- and multi-threaded coronal loops, which become unstable and reconnect, while varying the driving velocity of individual threads. Experiments containing a single thread destabilise in a manner indicative of an ideal MHD instability and consistent with previous examples in the literature. The introduction of additional threads modifies this picture, with aspects of the model geometry and relative driving speeds of individual threads affecting the ability of any thread to destabilise others. In both single- and multi-threaded cases, continuous driving of the remnants of disrupted threads produces secondary, aperiodic bursts of energetic release.

Three-dimensional MHD simulations of X-ray emitting subcluster plasmas in cluster of galaxies

2005 ◽  
Vol 36 (4) ◽  
pp. 636-642 ◽  
Author(s):  
N. Asai ◽  
N. Fukuda ◽  
R. Matsumoto
Keyword(s):  
Three Dimensional ◽  
X Ray ◽  
Cluster Of Galaxies ◽  
Mhd Simulations

scholarly journals The Complex Space Weather Events of September 2017

2019 ◽  
Author(s):  
Rajkumar Hajra ◽  
Bruce, T. Tsurutani ◽  
Gurbax, S. Lakhina
Keyword(s):  
Space Weather ◽  
Complex Space ◽  
Weather Events
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