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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 ...

Oxygen-hydrogen differentiated observations from TWINS: The 22 July 2009 storm 

Valek, P. W.; Goldstein, J.; McComas, D. J.; Ilie, R.; Buzulukova, N.; Fok, M. -C.; Perez, J. D. (2020-06-09)
The 22 July 2009 magnetic storm is the first significant storm during the emergence of the recent prolonged solar cycle minimum. This moderate storm (minimum Dst approximately -78 nT) has received a good deal of attention ...

Particle-in-Cell Simulations of Characteristics of Rising-Tone Chorus Waves in the Inner Magnetosphere 

Ke, Yangguang; Lu, Quanming; Gao, Xinliang; Wang, Xueyi; Chen, Lunjin; Wang, Shaojie; Wang, Shui; 0000-0003-3041-2682; 0000-0003-2489-3571 (2022-11-08)
Whistler mode chorus waves in the Earth's inner magnetosphere are usually composed of discrete elements, and each element can be characterized by the following properties: the amplitude, the duration, the frequency span, ...

Particle-in-Cell Simulations of the Fast Magnetosonic Mode in a Dipole Magnetic Field: 1-D Along the Radial Direction 

Min, Kyungguk; Liu, Kaijun; Denton, Richard E.; Boardsen, Scott A.; 0000-0001-5882-1328 (2020-05-28)
An electromagnetic particle-in-cell code is used to investigate self-consistent evolution of the fast magnetosonic mode in a one-dimensional configuration along the radial direction in a dipole background magnetic field. ...

Physics of Wind Musical Instruments 

Giordano, Nicholas; 0000-0003-2354-4492 (2022-10-14)
This project involves simulations of wind musical instruments for NSF project PHY-1806231. The archived codes were developed as part of the project with NSF support. Details of the dataset are described in the file ...

Pickup proton instabilities and scattering in the distant solar wind and the outer heliosheath: Hybrid simulations 

Liu, Kaijun; Mobius, Eberhard; Gary, S. Peter; Winske, Dan; 0000-0001-5882-1328 (2020-06-09)
The growth of magnetic field fluctuations driven by the injection of pickup ions perpendicular to a background magnetic field in a homogeneous, collisionless plasma is studied using one-dimensional hybrid simulations. ...

Pickup proton instabilities and scattering in the distant solar wind and the outer heliosheath: Hybrid simulations 

Liu, Kaijun; Eberhard, Möbius; Gary, S. Peter; Winske, Dan; 0000-0001-5882-1328; 0000-0002-2745-6978 (2022-10-27)
The growth of magnetic field fluctuations driven by the injection of pickup ions perpendicular to a background magnetic field in a homogeneous, collisionless plasma is studied using one-dimensional hybrid simulations. ...

Propagation of Electromagnetic Ion Cyclotron Waves in a Dipole Magnetic Field: A 2-D Hybrid Simulation 

Kang, Ning; Lu, Quanming; Gao, Xinliang; Wang, Xueyi; Chen, Huayue; Wang, Shui; 0000-0002-7619-701X; 0000-0003-3041-2682; 0000-0002-7317-8665 (2022-11-08)
Electromagnetic ion cyclotron (EMIC) waves are one commonly observed plasma waves in the Earth's inner magnetosphere and play a crucial role in particle dynamics in the radiation belt and ring current. EMIC waves are excited ...

Proton velocity ring-driven instabilities and their dependence on the ring speed: Linear theory 

Min, Kyungguk; Liu, Kaijun; Gary, Peter; 0000-0002-4655-2316; 0000-0001-5882-1328 (2022-10-12)
Linear dispersion theory is used to study the Alfven-cyclotron, mirror and ion Bernstein instabilities driven by a tenuous (1%) warm proton ring velocity distribution with a ring speed, v(r), varying between 2v(A) and ...

Proton velocity ring-driven instabilities and their dependence on the ring speed: Linear theory 

Min, Kyungguk; Liu, Kaijun; Gary, S. Peter; 0000-0001-5882-1328 (2020-05-28)
Linear dispersion theory is used to study the Alfven-cyclotron, mirror and ion Bernstein instabilities driven by a tenuous (1%) warm proton ring velocity distribution with a ring speed, v(r), varying between 2v(A) and ...

Proton velocity ring-driven instabilities in the inner magnetosphere: Linear theory and particle-in-cell simulations 

Min, Kyungguk; Liu, Kaijun; 0000-0001-5882-1328 (2022-09-29)
Linear dispersion theory and electromagnetic particle-in-cell (PIC) simulations are used to investigate linear growth and nonlinear saturation of the proton velocity ring-driven instabilities, namely, ion Bernstein instability ...

Proton velocity ring-driven instabilities in the inner magnetosphere: Linear theory and particle-in-cell simulations 

Min, Kyungguk; Liu, Kaijun; 0000-0002-2095-8529; 0000-0001-5882-1328 (2020-06-03)
Linear dispersion theory and electromagnetic particle-in-cell (PIC) simulations are used to investigate linear growth and nonlinear saturation of the proton velocity ring-driven instabilities, namely, ion Bernstein instability ...

Quantification of the Atmospheric Relativistic Electron Precipitation on 17 January 2013 

Shekhar, S; Millan, R; Woodger, L; Qin, M; 0000-0002-5770-6261; 0000-0002-2815-4998 (2022-09-29)
On 17 January 2013, relativistic electron precipitation (REP) was observed on Balloon Array for Radiation Belt Relativistic Electron Losses (BARREL) payloads, National Oceanic and Atmospheric Administration Polar orbiting ...

Quiet time equatorial mass density distribution derived from AMPTE/CCE and GOES using the magnetoseismology technique 

Min, Kyungguk; Bortnik, Jacob; Denton, Richard E.; Takahashi, Kazue; Lee, Jeongwoo; Singer, Howard J.; 0000-0002-2095-8529 (2020-06-05)
An inversion technique for estimating the properties of the magnetospheric plasma from the harmonic frequencies of the toroidal standing Alfven waves has been used to derive the global equatorial mass density covering ...

Radiation pressure measurements on micron-size individual dust grains 

Abbas, MM; Thomas, E.; 0000-0002-7747-0284 (2020-06-18)
Measurements of electromagnetic radiation pressure have been made on individual silica (SiO2) particles levitated in an electrodynamic balance. These measurements were made by inserting single charged particles of known ...

Re-Reconnection Processes of Magnetopause Flux Ropes: Three-Dimensional Global Hybrid Simulations 

Guo, Jin; Lu, San; Lu, Quanming; Lin, Yu; Wang, Xueyi; Huang, Kai; Wang, Rongsheng; Wang, Shui; 0000-0003-3041-2682; 0000-0002-9950-1029 (2022-10-18)
Magnetopause flux ropes (FRs) play a crucial role in the transport of energy and plasma from the solar wind to the Earth's magnetosphere. Once formed by multiple X-line reconnection, the FRs move poleward, during which ...