Search Publications
High Mach Number Quasi-Perpendicular Shocks: Spatial Versus Temporal Structure
Russell, C. T.; Omidi, N.; Howes, G. G. +1 more
Planetary bow shocks are a natural laboratory for investigating the physics of collisionless shocks. Given that spacecraft observations provide us with information regarding the temporal structure of the shock, often multi-spacecraft missions and kinetic simulations are needed to discern the nature of the dissipation processes at the shock and the…
Reconstruction of Magnetospheric Storm Time Dynamics Using Cylindrical Basis Functions and Multi Mission Data Mining
Sitnov, M. I.; Tsyganenko, N. A.; Andreeva, V. A.
First results are presented of the modeling of magnetospheric storm events, based on: (i) a new method to represent the magnetic field by means of the so called cylindrical basis functions, (ii) the data mining approach by Sitnov et al. (2008); https://doi.org/10.1029/2007ja013003, and (iii) upgra…
Electron Heat Flux in the Solar Wind: Generalized Approaches to Fluid Transport With a Variety of Skewed Velocity Distributions
Cranmer, Steven R.; Schiff, Avery J.
In the solar corona and solar wind, electron heat conduction is an important process that transports energy over large distances and helps determine the spatial variation of temperature. High-density regions undergoing rapid particle-particle collisions exhibit a heat flux described well by classical Spitzer-Härm theory. However, much of the helio…
Measurability of the Nonlinear Response of Electron Distribution Function to Chorus Emissions in the Earth's Radiation Belt
Santolík, O.; Kolmašová, I.; Omura, Y. +1 more
We conduct test particle simulations to study the perturbations in a hot electron velocity distribution caused by a rising chorus element propagating parallel to the ambient magnetic field in the Earth's outer radiation belt. The wavefield is constructed from the nonlinear growth theory of chorus emissions of Omura (2021,
In Situ Observations of the Ion Diffusion Region in the Venusian Magnetotail
Barabash, S.; Futaana, Y.; Wei, Y. +8 more
Utilizing the in situ observations of the Analyzer of Space Plasmas and Energetic Atoms (ASPERA 4) and the magnetometer (MAG) onboard Venus Express, we report evidence of crossing the ion diffusion region of magnetic reconnection. Evidence of magnetic reconnection is based on two cases recorded by Venus Express in the Venusian magnetotail. In both…
The Cusp Plasma Imaging Detector (CuPID) CubeSat Observatory: Mission Overview
Thomas, N.; Porter, F. S.; Kuntz, K. D. +28 more
The Cusp Plasma Imaging detector (CuPID) Cube Satellite Observatory is a six unit Cube Satellite developed to study macroscale properties of dayside magnetopause reconnection. Reconnection will be studied through imaging spatial and temporal ion dispersion signatures in the magnetospheric cusps. As reconnection enables shocked solar wind plasma to…
Re-Analysis of the Cassini RPWS/LP Data in Titan's Ionosphere: 1. Detection of Several Electron Populations
Wahlund, J. -E.; Edberg, N. J. T.; Hadid, L. Z. +5 more
Current models of Titan's ionosphere have difficulties in explaining the observed electron density and/or temperature. In order to get new insights, we re-analyzed the data taken in the ionosphere of Titan by the Cassini Langmuir probe (LP), part of the Radio and Plasma Wave Science (RPWS) instrument. This is the first of two papers that present t…
Multi-Point Observation of Hiss Emerging From Lightning Whistlers
Gurnett, Donald A.; Pickett, Jolene S.; Santolík, Ondřej +1 more
We analyze continuous multi-point measurements of electromagnetic field waveforms onboard the Cluster spacecraft in order to contribute to the discussion on sources of plasmaspheric hiss, known as a shaping agent for the Earth radiation belts. In our case study we aim at finding sources of hiss observed close to the geomagnetic equator in the oute…
Observations of Closed Magnetic Flux Embedded in the Lobes During Periods of Northward IMF
Fear, R. C.; Coxon, J. C.; Fryer, L. J. +1 more
The high latitude, lobe regions of the magnetosphere are often assumed to contain cool, low energy plasma populations. However, during periods of northward Interplanetary Magnetic Field, energetic plasma populations have occasionally been observed. We present three cases when Cluster observed uncharacteristically "hot" plasma populations in the lo…
Energetic Charged Particles in the Terrestrial Magnetosphere: Cluster/RAPID Results
Daly, P. W.; Klecker, B.; Malykhin, A. Yu. +3 more
In this work, we review the results of observations by the Cluster/Research with Adaptive Particle Imaging Detectors (RAPID) energetic charged particle detector (∼>40 keV-∼1 MeV). The origin of energetic ions in the region upstream of the Earth's bow shock is compared under different solar wind conditions. We give a brief overview of the accele…