Results 31 to 40 of about 357,993 (360)

A Survey of EMIC Waves in Van Allen Probe Data

Journal of Geophysical Research: Space Physics
AbstractUsing an automated novel approach we conduct a reproducible systematic survey of electromagnetic ion cyclotron wave activity detected by Van Allen Probe B during the time period 2013 January 1–2019 July 15. We identify approximately 500 hr of EMIC wave activity, an occurrence rate of ∼ 0.85%.
Andrew Inglis, K. R. Murphy, Alexa Halford   +2 more
openalex   +2 more sources

VLF waves from ground‐based transmitters observed by the Van Allen Probes: Statistical model and effects on plasmaspheric electrons

Geophysical Research Letters, 2017
Whistler mode very low frequency (VLF) waves from powerful ground‐based transmitters can resonantly scatter energetic plasmaspheric electrons and precipitate them into the atmosphere.
Qianli Ma, Didier Mourenas, Wen Li, Anton Artemyev, Richard M. Thorne   +4 more
doaj   +2 more sources

Statistical properties of plasmaspheric hiss derived from Van Allen Probes data and their effects on radiation belt electron dynamics [PDF]

, 2015
Wen Li, Qianli Ma, R. M. Thorne, Jacob Bortnik, C. Kletzing, W. S. Kŭrth, G. B. Hospodarsky, Y. Nishimura   +7 more
openalex   +2 more sources

Energetic, relativistic, and ultrarelativistic electrons: Comparison of long‐term VERB code simulations with Van Allen Probes measurements [PDF]

, 2015
In this study, we compare long-term simulations performed by the Versatile Electron Radiation Belt (VERB) code with observations from the Magnetic Electron Ion Spectrometer and Relativistic Electron-Proton Telescope instruments on the Van Allen Probes ...
Alexander Drozdov, Yuri Shprits, K. Orlova, Adam Kellerman, D. Subbotin, D. N. Baker, H. E. Spence, G. D. Reeves   +7 more
openalex   +5 more sources

Interactions of energetic electrons with ULF waves triggered by interplanetary shock: Van Allen Probes observations in the magnetotail [PDF]

, 2014
We present in situ observations of a shock-induced substorm-like event on 13 April 2013 observed by the newly launched Van Allen twin probes. Substorm-like electron injections with energy of 30-500 keV were observed in the region from L∼5.2 to 5.5 ...
Yixin Hao, Qiugang Zong, Yongfu Wang, Xu‐Zhi Zhou, Hui Zhang, S. Y. Fu, Z. Y. Pu, H. E. Spence, J. B. Blake, J. W. Bonnell, J. R. Wygant, C. Kletzing   +11 more
openalex   +4 more sources

Flight Calibration of the Van Allen Probe Magnetometers [PDF]

The Astrophysical Journal Supplement Series, 2020
Abstract The twin Van Allen Probes each carry a triaxial fluxgate magnetometer. Their orbits transverse a large of range of magnetic intensity. A procedure is described that calibrates the magnetometer in the spinning-spacecraft frame and in the presence of a persistent gradient of the magnetic field.
Bernard J. Vasquez, Charles W. Smith, Kristoff W. Paulson, C. A. Kletzing   +3 more
openaire   +2 more sources

Near-Earth injection of MeV electrons associated with intense dipolarization electric fields: Van Allen Probes observations. [PDF]

Geophys Res Lett, 2015
Substorms generally inject tens to hundreds of keV electrons, but intense substorm electric fields have been shown to inject MeV electrons as well. An intriguing question is whether such MeVelectron injections can populate the outer radiation belt.
Dai L, Wang C, Duan S, He Z, Wygant JR, Cattell CA, Tao X, Su Z, Kletzing C, Baker DN, Li X, Malaspina D, Blake JB, Fennell J, Claudepierre S, Turner DL, Reeves GD, Funsten HO, Spence HE, Angelopoulos V, Fruehauff D, Chen L, Thaller S, Breneman A, Tang X.   +24 more
europepmc   +4 more sources

Using Van Allen Probes and Arase Observations to Develop an Empirical Plasma Density Model in the Inner Zone

Journal of Geophysical Research: Space Physics, 2023
A new empirical density model is developed for the inner zone between 1 < L < 3 using plasma densities inferred from the upper hybrid resonance on Arase, and hiss‐inferred density values from Van Allen Probes. The Van Allen Probes hiss‐inferred densities
D. Hartley, G. Cunningham, J. Ripoll, D. Malaspina, Y. Kasahara, Y. Miyoshi, S. Matsuda, S. Nakamura, F. Tsuchiya, M. Kitahara, A. Kumamoto, I. Shinohara, A. Matsuoka   +12 more
semanticscholar   +1 more source

Specifying High Altitude Electrons Using Low‐Altitude LEO Systems: Updates to the SHELLS Model

Space Weather, 2023
We describe a new version of the SHELLS model, which specifies the outer electron belt environment as observed by the Van Allen Probes using the Kp Index and data from Polar‐orbiting Operational Environmental Satellites and the Meteorological Operational
A. J. Boyd, J. C. Green, T. P. O’Brien, S. G. Claudepierre   +3 more
doaj   +1 more source

Enhanced Radiation Levels at Aviation Altitudes and Their Relationship to Plasma Waves in the Inner Magnetosphere

Space Weather, 2023
It is believed that galactic cosmic rays and solar energetic particles are the two major sources of ionizing radiation. However, the radiation source may also be due to relativistic electrons that are associated with precipitation from the Van Allen ...
Homayon Aryan, Jacob Bortnik, W. Kent Tobiska, Piyush Mehta, Rashmi Siddalingappa   +4 more
doaj   +1 more source