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Magnetic field rotation and transition width in rotational discontinuities and Alfven wave trains 

Lin, Yu; Lee, L; 0000-0003-4012-991X (2022-09-29)
A hybrid simulation is carried out to study the evolution of magnetic field rotations in rotational discontinuities (RDs) and large-amplitude Alfven wave trains (AWTs) whose initial field rotation angle \Delta Phi\ > 180 ...

Magnetic field rotation and transition width in rotational discontinuities and Alfven wave trains 

Lin, Y.; Lee, LC.; 0000-0001-8003-9252 (2020-06-30)
A hybrid simulation is carried out to study the evolution of magnetic field rotations in rotational discontinuities (RDs) and large-amplitude Alfven wave trains (AWTs) whose initial field rotation angle \Delta Phi\ > 180 ...

Magnetic flux rope formation within a magnetosheath hot flow anomaly 

Hasegawa, H.; Zhang, H.; Lin, Y.; Sonnerup, B. U. O.; Schwartz, S. J.; Lavraud, B.; Zong, Q. -G.; 0000-0001-8003-9252 (2020-06-09)
We report observations on 1 March 2004 by the Cluster spacecraft of a hot flow anomaly (HFA) encountered in the dayside magnetosheath near Earth's bow shock. Embedded within the HFA was a magnetic flux rope with a diameter ...

Magnetosheath Reconnection Before Magnetopause Reconnection Driven by Interplanetary Tangential Discontinuity: A Three-Dimensional Global Hybrid Simulation With Oblique Interplanetary Magnetic Field 

Guo, Zhifang; Lin, Yu; Wang, Xueyi; Du, Aimin; 0000-0001-8003-9252 (2020-05-28)
Terrestrial dayside dynamics associated with a southward turning, oblique interplanetary magnetic field (IMF) carried by an interplanetary tangential discontinuity (TD) is investigated by performing a three-dimensional ...

Magnetosheath Reconnection Before Magnetopause Reconnection Driven by Interplanetary Tangential Discontinuity: A Three-Dimensional Global Hybrid Simulation With Oblique Interplanetary Magnetic Field 

Guo, Zhifang; Lin, Yu; Wang, Xueyi; Du, Aimin; 0000-0002-3728-6319 (2022-10-27)
Terrestrial dayside dynamics associated with a southward turning, oblique interplanetary magnetic field (IMF) carried by an interplanetary tangential discontinuity (TD) is investigated by performing a three-dimensional ...

Magnetotail-Inner Magnetosphere Transport Associated With Fast Flows Based on Combined Global-Hybrid and CIMI Simulation 

Lin, Y; Wang, X; Fok, M; Buzulukova, N; Perez, J; Cheng, L; Chen, L; 0000-0002-4768-189X; 0000-0002-5619-9093; 0000-0002-8127-2248 (2022-11-01)
Using the combined Auburn global hybrid simulation code in 3-D (ANGIE3D) and the Comprehensive Inner Magnetosphere-Ionosphere (CIMI) model, we investigate the self-consistent connection of fast flow injections from the ...

Maskelynite formation via solid-state transformation: Evidence of infrared and X-ray anisotropy 

Jaret, Steven; Woerner, William; Phillips, Brian; Ehm, Lars; Nekvasil, Hanna; Wright, Shawn; Glotch, Timothy; 0000-0001-5485-0316; 0000-0003-1265-9470; 0000-0001-8776-3235 (2022-11-08)
We present the results of a combined study of shocked labradorite from the Lonar crater, India, using optical microscopy, micro-Raman spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, high-energy X-ray total ...

Modeling of a New Electron Acceleration Mechanism Ahead of Streamers 

Ihaddadene, Kevin M. A.; Dwyer, Joseph R.; Liu, Ningyu; Celestin, Sebastien; Shi, Feng (2020-05-26)
Head‐on collisions between negative and positive streamers have been proposed as a mechanism behind X‐ray emissions by laboratory spark discharges. Recent simulations using plasma fluid and particle in cell models of a ...

Modeling of a New Electron Acceleration Mechanism Ahead of Streamers 

Ihaddadene, Keven; Liu, Ningyu; Celestin, Sebastien; Shi, Feng; Joseph, Dwyer; 0000-0002-2220-3197 (2022-11-01)
Head-on collisions between negative and positive streamers have been proposed as a mechanism behind X-ray emissions by laboratory spark discharges. Recent simulations using plasma fluid and particle in cell models of a ...

Modeling the Dynamics of Radiation Belt Electrons With Source and Loss Driven by the Solar Wind 

Xiang, Zheng; Li, Xinlin; Kapali, Sudha; Gannon, Jennifer; Ni, Binbin; Zhao, Hong; Zhang, Kun; Khoo, Leng Ying; 0000-0003-0393-9833; 0000-0001-8292-7691; 0000-0002-4899-7917; 0000-0003-0412-1064; 0000-0002-1683-3192 (2022-11-16)
A radial diffusion model directly driven by the solar wind is developed to reproduce MeV electron variations between L = 2-12 (L is L* in this study) from October 2012 to April 2015. The radial diffusion coefficient, ...

Modeling the loss of inner belt protons by magnetic field line curvature scattering 

Weichao, Tu; Cowee, M; Liu, K; 0000-0003-3117-4030; 0000-0001-5882-1328; 0000-0003-4547-3269 (2022-09-30)
The sudden loss of energetic protons in the inner radiation belt has been observed during geomagnetic storms. It is hypothesized that this sudden loss occurs because of changes in the geomagnetic field configuration which ...

Modeling the loss of inner belt protons by magnetic field line curvature scattering 

Tu, Weichao; Cowee, M. M.; Liu, Kaijun; 0000-0001-5882-1328 (2020-06-05)
The sudden loss of energetic protons in the inner radiation belt has been observed during geomagnetic storms. It is hypothesized that this sudden loss occurs because of changes in the geomagnetic field configuration which ...

Modulation of Magnetosonic Waves by Background Plasma Density in a Dipole Magnetic Field: 2-D PIC Simulation 

Sun, Jicheng; Lu, Quanming; Wang, Xueyi; Liu, Xu; Gao, Xinliang; Yang, Huigen; 0000-0002-7211-0546; 0000-0003-3041-2682 (2022-11-08)
Recent satellite observations, combined with instability analyses, have shown that the background plasma density variation can modulate the magnetosonic (MS) waves by controlling the wave excitation. However, the detailed ...

Multi-Event Studies of Sudden Energetic Electron Enhancements in the Inner Magnetosphere and Its Association With Plasmapause Positions 

Li, X; Khoo, L; Thaller, S; Hogan, B; 0000-0003-0412-1064; 0000-0002-1683-3192; 0000-0002-1654-2176; 0000-0001-8292-7691 (2022-10-04)
Sudden enhancements of energetic electrons (tens of keV to <500 keV) at low L-shells have been frequently observed by Van Allen Probes. It is, however, still unclear how deep these electrons can reach and what the responsible ...

The NSF/DOE Partnership in Basic Plasma Science & Engineering at 20: Report on the Anniversary Workshop 

Zweibel, Ellen; Brown, Michael; Mauel, Michael; Milchberg, Howard; Rocca, Jorge; Thomas, Edward Jr; 0000-0002-7747-0284 (2019-11-11)
A workshop recognizing the 20th anniversary of the NSF/DOE Partnership in Basic Plasma Science and Engineering was held at NSF on January 9-11, 2017. The workshop demonstrated some of the remarkable research and broader ...

On the Challenges of Measuring Energetic Particles in the Inner Belt: A Geant4 Simulation of an Energetic Particle Detector Instrument, REPTile-2 

Khoo, L; Li, X; Selesnick, R; Schiller, Q; Zhang, K; Zhao, H; Hogan, B; Cantilina, J; Sims, A; Bauch, E; Valade, T; Boyajian, S; Kohnert, R; 0000-0002-1654-2176; 0000-0002-1683-3192; 0000-0001-8292-7691; 0000-0003-0412-1064 (2022-11-16)
Following the retirement of the community supported Van Allen Probes mission, the quest for high-quality energetic particle measurements in the radiation belts is likely to be taken on by smaller spacecraft like CubeSats ...

One- and two-dimensional hybrid simulations of whistler mode waves in a dipole field 

Wu, S; Denton, R; Liu, K; Hudson, M; 0000-0001-5882-1328 (2022-09-29)
We simulate whistler mode waves using a hybrid code. There are four species in the simulations, hot electrons initialized with a bi-Maxwellian distribution with temperature in the direction perpendicular to background ...

One- and two-dimensional hybrid simulations of whistler mode waves in a dipole field 

Wu, S.; Denton, R. E.; Liu, Kaijun; Hudson, M. K.; 0000-0001-5882-1328 (2020-06-05)
We simulate whistler mode waves using a hybrid code. There are four species in the simulations, hot electrons initialized with a bi-Maxwellian distribution with temperature in the direction perpendicular to background ...

Outflow from the ionosphere in the vicinity of the cusp 

Valek, PW; Perez, JD; Jahn, JM; Pollock, CJ; Wuest, MP; Friedel, RHW; Moore, TE; Peterson, WK (2020-06-26)
Low-energy ion outflows from the ionosphere are known to be an important source of plasma for the magnetosphere. The objective of this study is to describe the spatial relationships between low-energy ionospheric outflows ...

Overlap of the plasmasphere and ring current: Relation to subauroral ionospheric heating 

Gurgiolo, C.; Sandel, BR; Perez, JD; Mitchell, DG; Pollock, CJ; Larsen, BA (2020-06-18)
The overlap of the ring current with the outer plasmasphere is thought to play a major role in storm-time related increases in the subauroral ambient topside electron temperature. Instabilities generated within the overlap ...