Fine structures in interlaced magnetic flux ropes via Hall-MHD simulations
Magnetic flux ropes are a fundamental component in both space and laboratory plasmas. We present a Hall-MHD simulation exploring the interaction between two isolated magnetic flux ropes under mesoscale solar wind conditions. The interaction interface is resolved with a resolution approaching the kin...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-01-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0238316 |
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| author | Ying-Dong Jia Hairong Lai Hanying Wei Yi Qi C. T. Russell Yasong Ge Tielong Zhang |
| author_facet | Ying-Dong Jia Hairong Lai Hanying Wei Yi Qi C. T. Russell Yasong Ge Tielong Zhang |
| author_sort | Ying-Dong Jia |
| collection | DOAJ |
| description | Magnetic flux ropes are a fundamental component in both space and laboratory plasmas. We present a Hall-MHD simulation exploring the interaction between two isolated magnetic flux ropes under mesoscale solar wind conditions. The interaction interface is resolved with a resolution approaching the kinetic scale, to reveal unprecedented details of this process. As we replicate previous findings that such interactions can lead to the formation of two new ropes, we also find that magnetic reconnection occurs in multiple locations inside the central current sheet, leading to transient small flux ropes, which is qualitatively consistent with previous magnetospheric multiscale observations. Consequently, each field line undergoes multiple reconnections that alter its connectivity before it exits the current sheet. Later, each flux rope divides into two branches: the reconnected flux moving away from the current sheet to form the transition regions of the new ropes and the remnant flux sustaining the current sheet. For each magnetic flux rope (MFR), the core field reconnects after most surface fields are reconnected so that the reconnecting MFRs maintain a relatively symmetric shape. These results in unprecedented detail highlight the complex internal dynamics and call for further observational and theoretical studies. |
| format | Article |
| id | doaj-art-7cb27996d1e34c3989ca93b35b151c34 |
| institution | Kabale University |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-7cb27996d1e34c3989ca93b35b151c342025-02-03T16:40:43ZengAIP Publishing LLCAIP Advances2158-32262025-01-01151015325015325-1610.1063/5.0238316Fine structures in interlaced magnetic flux ropes via Hall-MHD simulationsYing-Dong Jia0Hairong Lai1Hanying Wei2Yi Qi3C. T. Russell4Yasong Ge5Tielong Zhang6Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, California 90095, USAPlanetary Environmental and Astrobiological Research Laboratory (PEARL), School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, Guangdong 519000, ChinaDepartment of Earth, Planetary, and Space Sciences, University of California, Los Angeles, California 90095, USALaboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, Colorado 80303, USADepartment of Earth, Planetary, and Space Sciences, University of California, Los Angeles, California 90095, USACAS Engineering Laboratory for Deep Resources Equipment and Technology, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaSpace Research Institute, Austrian Academy of Sciences, Graz 8010, AustriaMagnetic flux ropes are a fundamental component in both space and laboratory plasmas. We present a Hall-MHD simulation exploring the interaction between two isolated magnetic flux ropes under mesoscale solar wind conditions. The interaction interface is resolved with a resolution approaching the kinetic scale, to reveal unprecedented details of this process. As we replicate previous findings that such interactions can lead to the formation of two new ropes, we also find that magnetic reconnection occurs in multiple locations inside the central current sheet, leading to transient small flux ropes, which is qualitatively consistent with previous magnetospheric multiscale observations. Consequently, each field line undergoes multiple reconnections that alter its connectivity before it exits the current sheet. Later, each flux rope divides into two branches: the reconnected flux moving away from the current sheet to form the transition regions of the new ropes and the remnant flux sustaining the current sheet. For each magnetic flux rope (MFR), the core field reconnects after most surface fields are reconnected so that the reconnecting MFRs maintain a relatively symmetric shape. These results in unprecedented detail highlight the complex internal dynamics and call for further observational and theoretical studies.http://dx.doi.org/10.1063/5.0238316 |
| spellingShingle | Ying-Dong Jia Hairong Lai Hanying Wei Yi Qi C. T. Russell Yasong Ge Tielong Zhang Fine structures in interlaced magnetic flux ropes via Hall-MHD simulations AIP Advances |
| title | Fine structures in interlaced magnetic flux ropes via Hall-MHD simulations |
| title_full | Fine structures in interlaced magnetic flux ropes via Hall-MHD simulations |
| title_fullStr | Fine structures in interlaced magnetic flux ropes via Hall-MHD simulations |
| title_full_unstemmed | Fine structures in interlaced magnetic flux ropes via Hall-MHD simulations |
| title_short | Fine structures in interlaced magnetic flux ropes via Hall-MHD simulations |
| title_sort | fine structures in interlaced magnetic flux ropes via hall mhd simulations |
| url | http://dx.doi.org/10.1063/5.0238316 |
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