scholarly journals In situ evidence of magnetic reconnection in turbulent plasma

2007 ◽  
Vol 3 (4) ◽  
pp. 235-238 ◽  
Author(s):  
A. Retinò ◽  
D. Sundkvist ◽  
A. Vaivads ◽  
F. Mozer ◽  
M. André ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Turbulent Plasma

scholarly journals In situ observation of magnetic reconnection in the front of bursty bulk flow

2014 ◽  
Vol 119 (12) ◽  
pp. 9952-9961 ◽  
Author(s):  
Rongsheng Wang ◽  
Quanming Lu ◽  
Aimin Du ◽  
Rumi Nakamura ◽  
San Lu ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Bulk Flow ◽  
In Situ Observation ◽  
Bursty Bulk Flow

scholarly journals Parker Solar Probe In Situ Observations of Magnetic Reconnection Exhausts during Encounter 1

2020 ◽  
Vol 246 (2) ◽  
pp. 34 ◽  
Author(s):  
T. D. Phan ◽  
S. D. Bale ◽  
J. P. Eastwood ◽  
B. Lavraud ◽  
J. F. Drake ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
In Situ Observations

scholarly journals Magnetic reconnection driven by filament eruption in the 7 June 2011 event

2013 ◽  
Vol 8 (S300) ◽  
pp. 502-503
Author(s):  
L. van Driel-Gesztelyi ◽  
D. Baker ◽  
T. Török ◽  
E. Pariat ◽  
L. M. Green ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Large Scale ◽  
Coronal Magnetic Field ◽  
Filament Eruption ◽  
Mhd Simulations ◽  
Reconnection Region ◽  
Solar Eruptions ◽  
Magnetic Modelling ◽  
First Time

AbstractDuring an unusually massive filament eruption on 7 June 2011, SDO/AIA imaged for the first time significant EUV emission around a magnetic reconnection region in the solar corona. The reconnection occurred between magnetic fields of the laterally expanding CME and a neighbouring active region. A pre-existing quasi-separatrix layer was activated in the process. This scenario is supported by data-constrained numerical simulations of the eruption. Observations show that dense cool filament plasma was re-directed and heated in situ, producing coronal-temperature emission around the reconnection region. These results provide the first direct observational evidence, supported by MHD simulations and magnetic modelling, that a large-scale re-configuration of the coronal magnetic field takes place during solar eruptions via the process of magnetic reconnection.

Fast Magnetic Reconnection by Turbulence with High Landquist Number

2020 ◽  
Author(s):  
Liping Yang ◽  
Hui Li ◽  
Fan Guo ◽  
Xiancan Li ◽  
Shengtai Li ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Energy Release ◽  
Magnetic Energy ◽  
Three Dimensional ◽  
Turbulent Plasma ◽  
Turbulence Level ◽  
Reconnection Rate ◽  
Numerical Studies ◽  
Large Opening ◽  
Magnetic Energy Release

<p>We report detailed numerical studies of magnetic reconnection in high-Lundquist-number, turbulent plasma by means of a three-dimensional (3D) resistive magnetohydrodynamics model. It is found that although turbulence is pre-existing, magnetic fields still restructure themselves to shape many X-points with evident mean inflow/outflow as well as the hierarchically generated magnetic flux ropes (plasmoids in 2D) with twist field lines. Moreover, the turbulence facilitates magnetic reconnections, and makes the normalized global reconnection rate reach ∼ 0.02 − 0.1, corresponding to turbulence level from very low to high and magnetic energy release from feeble to violent. The rate is nearly independent on the Lundquist number, and thus the fast turbulent reconnection occurs. A stochastic separation of the reconnected magnetic field lines with large opening angles follows a super-diffusion, indicating the broadening of outflow regions owing to the turbulence. These findings manifest that with the high Lundquist numbers (S ≥ 10^4), the 3D reconnection is turbulent and fast.</p>

scholarly journals Double Star, Cluster, and ground-based observations of magnetic reconnection during an interval of duskward oriented IMF: preliminary results

2005 ◽  
Vol 23 (8) ◽  
pp. 2903-2907 ◽  
Author(s):  
J. A. Wild ◽  
S. E. Milan ◽  
J. A. Davies ◽  
S. W. H. Cowley ◽  
C. M. Carr ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Northern Hemisphere ◽  
High Latitude ◽  
Double Star ◽  
Flux Tubes ◽  
Flux Transfer Events ◽  
Subsolar Point ◽  
Magnetic Flux Tubes ◽  
In Situ Observations

Abstract. We present a space- and ground-based study exploiting data from the coordinated Cluster and Double Star missions in order to investigate dayside magnetic reconnection under BY+ dominated IMF conditions. In-situ observations of magnetosheath flux transfer events combined with measurements of pulsed poleward and dawnward directed flows in the pre-noon sector high-latitude northern hemisphere ionosphere are interpreted as indications of pulsed magnetic reconnection during an interval in which the IMF remained relatively steady. Observations of newly-reconnected magnetic flux tubes anchored in the northern hemisphere both at mid-latitudes and in the vicinity of the subsolar point suggests that during BY+ dominated IMF, reconnection is not, as proposed previously, limited to the high-latitude magnetopause.

scholarly journals Cassini in situ observations of long-duration magnetic reconnection in Saturn’s magnetotail

2015 ◽  
Vol 12 (3) ◽  
pp. 268-271 ◽  
Author(s):  
C. S. Arridge ◽  
J. P. Eastwood ◽  
C. M. Jackman ◽  
G.-K. Poh ◽  
J. A. Slavin ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Long Duration ◽  
In Situ Observations
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