Results 41 to 50 of about 6,894 (155)

The Van Allen Probes Mission [PDF]

, 2014
Preface.- Science Objectives and Rationale for the Radiation Belt Storm Probes Mission.- Mission Overview for the Radiation Belt Storm Probes Mission.- Radiation Belt Storm Probes - Observatory and Environments.- The Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on RBSP.- The Electric Field and Waves (EFW) Instruments on
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Magnetospheric Mass Density as Determined by ULF Wave Analysis

Frontiers in Astronomy and Space Sciences, 2021
The technique to estimate the mass density in the magnetosphere using the physical properties of observed magnetohydrodynamic waves is known as magnetoseismology.
Kazue Takahashi, Richard E. Denton 
doaj   +1 more source

Specifying High‐Altitude Electrons Using Low‐Altitude LEO Systems: The SHELLS Model

Space Weather, 2020
We describe an artificial neural network model of the near‐Earth space radiation environment. The geomagnetic activity index Kp and low‐earth‐orbit (LEO) electron flux measurements from the National Oceanic and Atmospheric Administration Polar‐orbiting ...
S. G. Claudepierre, T. P. O'Brien
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Lightning Contribution to Overall Whistler Mode Wave Intensities in the Plasmasphere

Geophysical Research Letters, 2019
Electromagnetic waves generated by lightning propagate into the plasmasphere as dispersed whistlers. They can therefore influence the overall wave intensity in space, which, in turn, is important for dynamics of the Van Allen radiation belts.
J. Záhlava, F. Němec, O. Santolík, I. Kolmašová, G. B. Hospodarsky, M. Parrot, W. S. Kurth, C. A. Kletzing   +7 more
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Global empirical models of plasmaspheric hiss using Van Allen Probes [PDF]

Journal of Geophysical Research: Space Physics, 2015
AbstractPlasmaspheric hiss is a whistler‐mode emission that permeates the Earth's plasmasphere and is a significant driver of energetic electron losses through cyclotron resonant pitch angle scattering. The Electric and Magnetic Field Instrument Suite and Integrated Science instrument on the Van Allen Probes mission provides vastly improved ...
Spasojevic, M., Shprits, Y., Orlova, K.
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Bayesian Inference of Quasi‐Linear Radial Diffusion Parameters using Van Allen Probes [PDF]

Journal of Geophysical Research: Space Physics, 2020
AbstractThe Van Allen radiation belts in the magnetosphere have been extensively studied using models based on radial diffusion theory, which is derived from a quasi‐linear approach with prescribed inner and outer boundary conditions. The 1D diffusion model requires the knowledge of a diffusion coefficient and an electron loss timescale, which is ...
Rakesh Sarma, Mandar Chandorkar, Irina Zhelavskaya, Yuri Shprits, Alexander Drozdov, Enrico Camporeale   +5 more
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A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes Observations

Space Weather, 2022
Based on electron density observations between September 2012 and July 2019 from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on board the Van Allen Probes (VAPs) spacecraft, this paper makes a statistical ...
Jing‐Tian Lv, Xiao‐Xin Zhang, Fei He, Rui‐Lin Lin   +3 more
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Magnetic field fluctuations coinciding with substorm events

Earth, Planets and Space
Using observations from the Van Allen Probes spacecraft, this study reports multifrequency banded magnetic field fluctuations during substorm-associated magnetic field dipolarization at L < 6.6.
Trunali Shah, Veenadhari Bhaskara, Yoshiharu Omura, Biswajit Ojha, Satyavir Singh, Remya Bhanu, Yusuke Ebihara   +6 more
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Ensemble modeling of long-term radiation belt dynamics: accounting for variability in radial diffusion

Frontiers in Astronomy and Space Sciences
This study presents ensemble modeling of outer radiation belt dynamics observed by Van Allen Probes throughout 2017 using DREAM3D simulations.
Sang-Yun Lee, Sang-Yun Lee, Weichao Tu, Gregory S. Cunningham, Gregory S. Cunningham, Misa M. Cowee   +5 more
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Statistical Analysis of Pi2 Pulsations Observed by Van Allen Probes

Journal of Geophysical Research: Space Physics, 2022
AbstractThe relative importance of propagating and cavity mode waves remains an important question regarding the generation of Pi2 pulsations detected on the ground. To determine the wave mode, we statistically generate spatial maps of magnetospheric oscillations that are coherent with ground Pi2 pulsations. The magnetospheric observations were made by
Kazue Takahashi, Robert Lysak, Massimo Vellante   +2 more
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