Global Hybrid Simulations of the Bow Shock

2005 ◽  
Author(s):  
N. Omidi
Keyword(s):  
Bow Shock ◽  
Hybrid Simulations

scholarly journals Interaction of rotational discontinuities with energetic ions in the precursor of the Earth’s bow shock

2021 ◽  
Vol 2103 (1) ◽  
pp. 012015
Author(s):  
Julia A Kropotina ◽  
Anton V. Artemyev ◽  
Andrei M. Bykov ◽  
Dmitri L. Vainchtein
Keyword(s):  
Solar Wind ◽  
Energetic Particles ◽  
Bow Shock ◽  
Growing Up ◽  
Whistler Waves ◽  
Energetic Ions ◽  
Strongly Coupled ◽  
Earth’S Bow Shock ◽  
Hybrid Simulations

Abstract We combined in-situ solar wind observations by ARTEMIS and MMS missions with kinetic hybrid simulations to study the interaction of solar wind rotational discontinuities (RDs) with the foreshock of the Earth’s bow shock. We found that whistler modes excited by diffuse energetic particles were strongly coupled with RDs and lead to their temporary dissociation. At the same time, RDs trigger the steepening of whistler waves and the generation of ’shocklets’ - small localised shock-like structures, capable of trapping energetic particles and growing up by absorbing the particles energy.

scholarly journals Aspects of solar wind interaction with Mars: comparison of fluid and hybrid simulations

2007 ◽  
Vol 25 (1) ◽  
pp. 145-159
Author(s):  
N. V. Erkaev ◽  
A. Bößwetter ◽  
U. Motschmann ◽  
H. K. Biernat
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
Hybrid Model ◽  
Field Enhancement ◽  
Bow Shock ◽  
Solar Wind Interaction ◽  
Plasma Parameters ◽  
Physical Reason ◽  
The Magnetic Field ◽  
Hybrid Simulations

Abstract. Mars has no global intrinsic magnetic field, and consequently the solar wind plasma interacts directly with the planetary ionosphere. The main factors of this interaction are: thermalization of plasma after the bow shock, ion pick-up process, and the magnetic barrier effect, which results in the magnetic field enhancement in the vicinity of the obstacle. Results of ideal magnetohydrodynamic and hybrid simulations are compared in the subsolar magnetosheath region. Good agreement between the models is obtained for the magnetic field and plasma parameters just after the shock front, and also for the magnetic field profiles in the magnetosheath. Both models predict similar positions of the proton stoppage boundary, which is known as the ion composition boundary. This comparison allows one to estimate applicability of magnetohydrodynamics for Mars, and also to check the consistency of the hybrid model with Rankine-Hugoniot conditions at the bow shock. An additional effect existing only in the hybrid model is a diffusive penetration of the magnetic field inside the ionosphere. Collisions between ions and neutrals are analyzed as a possible physical reason for the magnetic diffusion seen in the hybrid simulations.

scholarly journals Rosetta swing-by at Mars – an analysis of the ROMAP measurements in comparison with results of 3-D multi-ion hybrid simulations and MEX/ASPERA-3 data

2009 ◽  
Vol 27 (6) ◽  
pp. 2383-2398 ◽  
Author(s):  
A. Boesswetter ◽  
U. Auster ◽  
I. Richter ◽  
M. Fränz ◽  
B. Langlais ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Measurements ◽  
Bow Shock ◽  
Gravity Assist ◽  
Pile Up ◽  
Magnetic Field Model ◽  
Order Of Magnitude ◽  
Upstream Waves ◽  
Insight Into ◽  
Hybrid Simulations

Abstract. The Rosetta spacecraft flew by Mars at a distance of 260 km on 25 February 2007 during a gravity assist manoeuvre. During the closest approach (CA) the lander magnetometer ROMAP was switched on. The dataset taken during this swingby provides insight into the plasma environment around Mars: in addition to a pronounced bow shock crossing Rosetta recorded the signature of the pile up region of draped magnetic field. Also the Rosetta measurements showed signatures of crustal magnetic field anomalies which can be verified by results of a crustal magnetic field model. In order to understand the measured field morphology, multi-ion hybrid simulations were performed. Some of the input parameters for the simulations were obtained from Mars Express (MEX) data which were contemporaneously collected during the Rosetta swingby. These simulations reproduces ROMAP magnetic field measurements and show that the interplanetary magnetic field pointed northward during the encounter. A spectral analysis shows upstream waves ahead of the bow shock and indicates the presence of the magnetic pile-up boundary (MPB). The multi-ion model reproduces the ion fluxes measured by MEX/ASPERA-3 and is in agreement with the measurements to within one order of magnitude.

scholarly journals Evidence for reformation of the Uranian bow shock: Hybrid simulations and comparisons with Voyager data

2011 ◽  
Vol 116 (A4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Dion Tiu ◽  
Iver H. Cairns ◽  
Xingqiu Yuan ◽  
P. A. Robinson
Keyword(s):  
Bow Shock ◽  
Hybrid Simulations

scholarly journals 3D hybrid simulations of the interaction of a magnetic cloud with a bow shock

2015 ◽  
Vol 120 (8) ◽  
pp. 6133-6151 ◽  
Author(s):  
L. Turc ◽  
D. Fontaine ◽  
P. Savoini ◽  
R. Modolo
Keyword(s):  
Magnetic Cloud ◽  
Bow Shock ◽  
Hybrid Simulations
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