scholarly journals Two-dimensional hybrid model of wave and beam heating of multi-ion solar wind plasma

2007 ◽  
Vol 112 (A6) ◽  
pp. n/a-n/a ◽  
Author(s):  
L. Ofman ◽  
A. F. Viñas
Keyword(s):  
Solar Wind ◽  
Hybrid Model ◽  
Solar Wind Plasma ◽  
Two Dimensional ◽  
Beam Heating

Two-Dimensional Hybrid Particle-In-Cell Simulation of Solar Wind Plasma Flow around Magnetic Sail

2012 ◽  
Vol 10 (ists28) ◽  
pp. Pb_43-Pb_50
Author(s):  
Masaharu MATSUMOTO ◽  
Yoshihiro KAJIMURA ◽  
Hideyuki USUI ◽  
Ikkoh FUNAKI ◽  
and Iku SINOHARA
Keyword(s):  
Solar Wind ◽  
Plasma Flow ◽  
Solar Wind Plasma ◽  
Two Dimensional ◽  
Hybrid Particle ◽  
Particle In Cell ◽  
Cell Simulation

Using machine learning to identify magnetic reconnection in two-dimensional simulations

2020 ◽  
Author(s):  
Andong Hu ◽  
Jannis Teunissen ◽  
Manuela Sisti ◽  
Francesco Califano ◽  
Jérémy Dargent ◽  
...  
Keyword(s):  
Machine Learning ◽  
Solar Wind ◽  
Magnetic Reconnection ◽  
Solar Wind Plasma ◽  
Space Physics ◽  
Electron Velocity ◽  
Two Dimensional ◽  
The European Union ◽  
Horizon 2020 ◽  
Research And Innovation

<div>The understanding of fundamental processes at play in a collisionless plasmas such as the solar wind, is a frontier problem in space physics. We investigate here the occurrence of magnetic reconnection in a plasma with parameters corresponding to solar wind plasma and its interplay with a fully-developed turbulent state. Ongoing magnetic reconnection can, at the moment, be accurately identified only by humans. Therefore, as a first step, the goal of this study is to present a new method to automatically recognise reconnection events in the output of two-dimensional HVM (Hybrid Vlasov Maxwell) simulations where ions evolve by solving the Vlasov equation and the electrons are treated as a fluid with mass. A large dataset with labelled reconnection events was prepared, including parameters such as the magnetic field, the electron velocity field and the current density. We consider two types of machine learning models: classical approaches using on physics-based features, and convolutional neural networks (CNNs). We will investigate which approach performs better, and which input variables are most relevant. In addition, we will try to categorize magnetic reconnection regions (current sheets). This work has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 776262 (AIDA, www.aida-space.eu).</div>

scholarly journals A review of the SCOSTEP’s 5-year scientific program VarSITI—Variability of the Sun and Its Terrestrial Impact

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Kazuo Shiokawa ◽  
Katya Georgieva
Keyword(s):  
Solar Wind ◽  
Interplanetary Space ◽  
Solar Wind Plasma ◽  
The Sun ◽  
Scientific Program ◽  
Solar Cycles ◽  
Grand Minimum ◽  
The Earth ◽  
Earth Connection ◽  
Near Future

AbstractThe Sun is a variable active-dynamo star, emitting radiation in all wavelengths and solar-wind plasma to the interplanetary space. The Earth is immersed in this radiation and solar wind, showing various responses in geospace and atmosphere. This Sun–Earth connection variates in time scales from milli-seconds to millennia and beyond. The solar activity, which has a ~11-year periodicity, is gradually declining in recent three solar cycles, suggesting a possibility of a grand minimum in near future. VarSITI—variability of the Sun and its terrestrial impact—was the 5-year program of the scientific committee on solar-terrestrial physics (SCOSTEP) in 2014–2018, focusing on this variability of the Sun and its consequences on the Earth. This paper reviews some background of SCOSTEP and its past programs, achievements of the 5-year VarSITI program, and remaining outstanding questions after VarSITI.

scholarly journals Ulysses solar wind plasma observations at high latitudes

1997 ◽  
Vol 20 (1) ◽  
pp. 15-22 ◽  
Author(s):  
P Riley ◽  
S.J Bame ◽  
B.L Barraclough ◽  
W.C Feldman ◽  
J.T Gosling ◽  
...  
Keyword(s):  
Solar Wind ◽  
Solar Wind Plasma ◽  
High Latitudes

Thermal properties of the solar wind plasma

Solar Physics ◽  
1971 ◽  
Vol 18 (1) ◽  
pp. 150-164 ◽  
Author(s):  
Tsutomu Toichi
Keyword(s):  
Solar Wind ◽  
Thermal Properties ◽  
Solar Wind Plasma

Ulysses solar wind plasma observations during the declining phase of solar cycle 22

1995 ◽  
Vol 16 (9) ◽  
pp. 85-94 ◽  
Author(s):  
J.L. Phillips ◽  
S.J. Bame ◽  
W.C. Feldman ◽  
J.T. Gosling ◽  
C.M. Hammond ◽  
...  
Keyword(s):  
Solar Wind ◽  
Solar Cycle ◽  
Solar Wind Plasma
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