Global threedimensional simulation of Earth's dayside reconnection using a twoway coupled magnetohydrodynamics with embedded particleincell model: initial results: 3D MHDEPIC simulation of magnetosphere
Abstract
Here, we perform a threedimensional (3D) global simulation of Earth's magnetosphere with kinetic reconnection physics to study the flux transfer events (FTEs) and dayside magnetic reconnection with the recently developed magnetohydrodynamics with embedded particleincell model (MHDEPIC). During the onehour long simulation, the FTEs are generated quasiperiodically near the subsolar point and move toward the poles. We also find the magnetic field signature of FTEs at their early formation stage is similar to a ‘crater FTE’, which is characterized by a magnetic field strength dip at the FTE center. After the FTE core field grows to a significant value, it becomes an FTE with typical flux rope structure. When an FTE moves across the cusp, reconnection between the FTE field lines and the cusp field lines can dissipate the FTE. The kinetic features are also captured by our model. A crescent electron phase space distribution is found near the reconnection site. A similar distribution is found for ions at the location where the Larmor electric field appears. The lower hybrid drift instability (LHDI) along the current sheet direction also arises at the interface of magnetosheath and magnetosphere plasma. Finally, the LHDI electric field is about 8 mV/m and its dominant wavelengthmore »
 Authors:
 Univ. of Michigan, Ann Arbor, MI (United States). Center for Space Environment Modeling
 West Virginia Univ., Morgantown, WV (United States). Dept. of Physics and Astronomy
 Center for Space Environment Modeling, University of Michigan, Ann Arbor MI USA
 KTH Royal Inst. of Technology, Stockholm (Sweden)
 Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
 Publication Date:
 Research Org.:
 Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
 Sponsoring Org.:
 National Science Foundation (NSF)
 OSTI Identifier:
 1394984
 Report Number(s):
 LAUR1725622
Journal ID: ISSN 21699380
 Grant/Contract Number:
 AC5206NA25396
 Resource Type:
 Journal Article: Accepted Manuscript
 Journal Name:
 Journal of Geophysical Research. Space Physics
 Additional Journal Information:
 Journal Volume: 122; Journal Issue: 10; Journal ID: ISSN 21699380
 Publisher:
 American Geophysical Union
 Country of Publication:
 United States
 Language:
 English
 Subject:
 58 GEOSCIENCES; Heliospheric and Magnetospheric Physics
Citation Formats
Chen, Yuxi, Tóth, Gábor, Cassak, Paul, Jia, Xianzhe, Gombosi, Tamas I., Slavin, James A., Markidis, Stefano, Peng, Ivy Bo, Jordanova, Vania K., and Henderson, Michael G. Global threedimensional simulation of Earth's dayside reconnection using a twoway coupled magnetohydrodynamics with embedded particleincell model: initial results: 3D MHDEPIC simulation of magnetosphere. United States: N. p., 2017.
Web. doi:10.1002/2017JA024186.
Chen, Yuxi, Tóth, Gábor, Cassak, Paul, Jia, Xianzhe, Gombosi, Tamas I., Slavin, James A., Markidis, Stefano, Peng, Ivy Bo, Jordanova, Vania K., & Henderson, Michael G. Global threedimensional simulation of Earth's dayside reconnection using a twoway coupled magnetohydrodynamics with embedded particleincell model: initial results: 3D MHDEPIC simulation of magnetosphere. United States. doi:10.1002/2017JA024186.
Chen, Yuxi, Tóth, Gábor, Cassak, Paul, Jia, Xianzhe, Gombosi, Tamas I., Slavin, James A., Markidis, Stefano, Peng, Ivy Bo, Jordanova, Vania K., and Henderson, Michael G. 2017.
"Global threedimensional simulation of Earth's dayside reconnection using a twoway coupled magnetohydrodynamics with embedded particleincell model: initial results: 3D MHDEPIC simulation of magnetosphere". United States.
doi:10.1002/2017JA024186.
@article{osti_1394984,
title = {Global threedimensional simulation of Earth's dayside reconnection using a twoway coupled magnetohydrodynamics with embedded particleincell model: initial results: 3D MHDEPIC simulation of magnetosphere},
author = {Chen, Yuxi and Tóth, Gábor and Cassak, Paul and Jia, Xianzhe and Gombosi, Tamas I. and Slavin, James A. and Markidis, Stefano and Peng, Ivy Bo and Jordanova, Vania K. and Henderson, Michael G.},
abstractNote = {Here, we perform a threedimensional (3D) global simulation of Earth's magnetosphere with kinetic reconnection physics to study the flux transfer events (FTEs) and dayside magnetic reconnection with the recently developed magnetohydrodynamics with embedded particleincell model (MHDEPIC). During the onehour long simulation, the FTEs are generated quasiperiodically near the subsolar point and move toward the poles. We also find the magnetic field signature of FTEs at their early formation stage is similar to a ‘crater FTE’, which is characterized by a magnetic field strength dip at the FTE center. After the FTE core field grows to a significant value, it becomes an FTE with typical flux rope structure. When an FTE moves across the cusp, reconnection between the FTE field lines and the cusp field lines can dissipate the FTE. The kinetic features are also captured by our model. A crescent electron phase space distribution is found near the reconnection site. A similar distribution is found for ions at the location where the Larmor electric field appears. The lower hybrid drift instability (LHDI) along the current sheet direction also arises at the interface of magnetosheath and magnetosphere plasma. Finally, the LHDI electric field is about 8 mV/m and its dominant wavelength relative to the electron gyroradius agrees reasonably with MMS observations.},
doi = {10.1002/2017JA024186},
journal = {Journal of Geophysical Research. Space Physics},
number = 10,
volume = 122,
place = {United States},
year = 2017,
month = 9
}

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