scholarly journals In situ observations of flux rope at the separatrix region of magnetic reconnection

2016 ◽  
Vol 121 (1) ◽  
pp. 205-213 ◽  
Author(s):  
S. Y. Huang ◽  
A. Retino ◽  
T. D. Phan ◽  
W. Daughton ◽  
A. Vaivads ◽  
...  
2020 ◽  
Vol 246 (2) ◽  
pp. 34 ◽  
Author(s):  
T. D. Phan ◽  
S. D. Bale ◽  
J. P. Eastwood ◽  
B. Lavraud ◽  
J. F. Drake ◽  
...  

2020 ◽  
Author(s):  
Yongfu Wang ◽  
Qiugang Zong ◽  
Linghua Wang ◽  
Hongfei Chen ◽  
Hong Zou

<p>Substorm is the global disruptive activity in Earth’s magnetotail, including phenomena such as reconnection, plasmoid, flux rope, BBFs, energetic particle injection, and aurora etc. The ground based observations are often hard to determine the time sequences of substorm activities, while the satellite in-situ observations often cannot distinguish between temporal and spatial variations, therefore the global imaging observations are very useful in substorm studies. In this study we demonstrate the physical design of a grid-based energetic neutral atom (ENA) imager that can provide high temporal, spatial and energy resolution ENA imaging of Earth’s magnetotail. The ENA imager takes advantage of spatial Fourier modulation to the ENA fluxes to construct the ENA images, which is inspired by RHESSI. The physical design including imaging process, the charged particle reflector, and the ENA species discrimination etc. are described, along with the engineering progresses.</p>


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 ◽  
...  

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.


2015 ◽  
Vol 12 (3) ◽  
pp. 268-271 ◽  
Author(s):  
C. S. Arridge ◽  
J. P. Eastwood ◽  
C. M. Jackman ◽  
G.-K. Poh ◽  
J. A. Slavin ◽  
...  

2015 ◽  
Vol 808 (1) ◽  
pp. L15 ◽  
Author(s):  
H. Q. SONG ◽  
Y. CHEN ◽  
J. ZHANG ◽  
X. CHENG ◽  
B. Wang ◽  
...  

2015 ◽  
Vol 120 (8) ◽  
pp. 6320-6331 ◽  
Author(s):  
Mingyu Wu ◽  
Can Huang ◽  
Quanming Lu ◽  
Martin Volwerk ◽  
Rumi Nakamura ◽  
...  

2020 ◽  
Author(s):  
Emma Davies ◽  
Robert Forsyth ◽  
Simon Good

<p>Understanding the evolution of interplanetary coronal mass ejections (ICMEs) as they propagate through the heliosphere is essential in forecasting space weather severity. Much of our knowledge of ICMEs has been gained using in-situ measurements from single spacecraft, although the increasing number of missions in the inner heliosphere has led to an increase in multi-spacecraft studies improving our understanding of the global structure of ICMEs. Whilst most such recent studies have focused on the inner heliosphere within 1 AU, Juno cruise phase data provides a new opportunity to study ICME evolution over greater distances. We present analysis of ICMEs observed in-situ both by Juno and at least one other spacecraft within 1 AU to investigate their evolution as they propagate through the heliosphere. Investigation of the sheath region and timing considerations between spacecraft allows for the general shape of the shock front to be reconstructed. Combining in-situ observations and results of flux rope fitting techniques determines the global picture of the ICME as it propagates. However, effects on in-situ observations due to radial evolution and due to the longitudinal separation between multi-spacecraft remain hard to separate. We note the importance of the interplanetary environment in which the ICME propagates and the need for caution in radial alignment studies.  </p>


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