The Lyon–Fedder–Mobarry (LFM) global MHD magnetospheric simulation code

Lyon, J. G.; Fedder, J. A.; Mobarry, Clark

doi:10.1016/j.jastp.2004.03.020

Cited by 495 publications

(526 citation statements)

References 27 publications

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“…The results showed an IMF B y penetration into the tail and a twisting of the entire tail. Kaymaz et al [1995] studied the cross-sectional magnetic field configuration and the twisting of current sheet by the Fedder-Lyon MHD model [Lyon et al, 2004]. It was shown that both the IMF B y penetration and twisting of current sheet agree with the results from previous observations [Kaymaz et al, 1994].…”

Section: Introductionsupporting

confidence: 60%

Effects of the interplanetary magnetic field on the twisting of the magnetotail: Global MHD results

Wang

Huang

et al. 2014

JGR Space Physics

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We used the global magnetohydrodynamic (MHD) simulation to investigate effects of the interplanetary magnetic field (IMF) on the twisting of the magnetotail. It is shown that the cross section of the magnetotail is elongated along a certain direction close to the IMF orientation. The elongated direction twists with the IMF orientation, magnitude, and the distance away from Earth, and the quantitative relationship has been given. In addition, the current sheet has a similar twisting behavior as the magnetotail magnetopause, with a smaller twisting angle. Our simulated results fall within the range that people have deduced from observations.

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Section: Introductionsupporting

confidence: 60%

Effects of the interplanetary magnetic field on the twisting of the magnetotail: Global MHD results

Wang

Huang

et al. 2014

JGR Space Physics

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“…The LFM solves a set of modified ideal MHD equations, using the plasma energy equation to close the system of equations. The four MHD equations used in the LFM are (written in cgs units here) [Lyon et al, 2004]:…”

Section: Resultsmentioning

confidence: 99%

“…The axis of the cylinder lies in the magnetic equatorial plane and the dipole is at a 90 angle to this plane [Lyon et al, 2004]. This means the input solar wind must be in solar magnetic coordinates.…”

Section: Resultsmentioning

confidence: 99%

Simulated ring current response during periods of dawn‐dusk oriented interplanetary magnetic field (B_y)

et al. 2013

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[1] Ring current formation is mainly attributed to enhanced global magnetospheric convection and particle injection. One of the indicators of enhanced global magnetospheric convection is the transpolar potential. The transpolar potential has been shown to respond to dawn-dusk oriented interplanetary magnetic field (IMF), enhancing as the IMF magnitude grows. This suggests that the ring current should respond to dawn-dusk oriented IMF. This work examines the ring current response during periods of dawn-dusk oriented IMF using the Lyon-Fedder-Mobarry and Comprehensive Ring Current Model simulations. Exploring three hypotheses, this work shows through simulation results that the ring current does respond during periods of dawn-dusk oriented IMF, that the inner magnetospheric response is different for periods of dawn-dusk oriented IMF than for periods of southward IMF, and that these differences are attributed to both lower magnetospheric convection on closed field lines and the location of the reconnection region on the nightside. Specifically, the simulation results show that as the magnitude of the dawn-dusk oriented IMF increases, producing a corresponding increase in the transpolar potential, the ring current response increases. The response is always much less than a comparable southward IMF would produce. This lower response is due to both magnetospheric convection on closed field lines, which builds the ring current but at a slower rate, and flank reconnection, which allows energy to flow through the inner magnetosphere without building the ring current plasma population (as a conduit).

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“…This module handles the conversion of data from spherical coordinates into Cartesian coordinates. The ReadLFM module imports data from the HDF output files created by the Lyon-Fedder-Mobbary global magnetospheric model [Lyon et al, 2004]. The ReadBATSRUS module imports data from the BATSRUS global magnetospheric simulation [Gombosi et al, 1998].…”

Section: A09224mentioning

confidence: 99%

“…[44] The Lyon-Fedder-Mobarry (LFM) global magnetospheric model uses the ideal MHD equations to simulate the interaction of the solar wind with the Earth's magnetic field [Lyon et al, 2004]. It typically covers a cylindrical computational domain which extends from approximately 30 R E upstream to 300 R E downstream with a radius of 100 R E .…”

Section: Energy Distribution In the Magnetospherementioning

confidence: 99%

Analysis and visualization of space science model output and data with CISM‐DX

et al. 2005

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[1] Among the many challenges facing space physics today is the need for an analysis and visualization package which can examine the results from numerical and empirical models as well as observational data. In this paper we introduce the CISM-DX package as a possible answer to this problem. We have created a tool which is capable of completing highly sophisticated visualizations of the results from a diverse set of models throughout the connected Sun-Earth system. We begin with an overview of the open source software programs, OpenDX and Octave, which form the basis of our package. Next we discuss the extensions to these programs that we have added to enhance their utility to the space physics community. We also discuss the extensive database of observations that is included with CISM-DX. Results from heliospheric simulations are used to highlight the ease at which a novice user can begin to utilize these tools. An energy budget calculation during a magnetospheric substorm simulation illustrates the more advanced analysis possible with the CISM-DX package. Next we highlight the extensive database of observational measurements included with the distribution, along with tools for displaying them. This package is being released under an open source licensing agreement to facilitate and encourage community use and contribution.Citation: Wiltberger, M., R. S. Weigel, M. Gehmeyr, and T. Guild (2005), Analysis and visualization of space science model output and data with CISM-DX,

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The Lyon–Fedder–Mobarry (LFM) global MHD magnetospheric simulation code

Cited by 495 publications

References 27 publications

Effects of the interplanetary magnetic field on the twisting of the magnetotail: Global MHD results

Effects of the interplanetary magnetic field on the twisting of the magnetotail: Global MHD results

Simulated ring current response during periods of dawn‐dusk oriented interplanetary magnetic field (B_y)

Analysis and visualization of space science model output and data with CISM‐DX

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The Lyon–Fedder–Mobarry (LFM) global MHD magnetospheric simulation code

Cited by 495 publications

References 27 publications

Effects of the interplanetary magnetic field on the twisting of the magnetotail: Global MHD results

Effects of the interplanetary magnetic field on the twisting of the magnetotail: Global MHD results

Simulated ring current response during periods of dawn‐dusk oriented interplanetary magnetic field (By)

Analysis and visualization of space science model output and data with CISM‐DX

Contact Info

Product

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Simulated ring current response during periods of dawn‐dusk oriented interplanetary magnetic field (B_y)