Results 321 to 330 of about 357,993 (360)

Statistical Properties of Long‐Period Plasmapause Surface Waves From Van Allen Probes Observations

Journal of Geophysical Research: Space Physics, 2023
Recent work revealed the existence of plasmapause surface waves (PSWs) with Van Allen Probes observations, which are characterized by the periodic modulations of both magnetic/electric fields and plasma densities, and suggested to be the driver of giant ...
Zi‐Jian Feng, Jie Ren, Q. Zong, Ting‐Yan Xiang, Xin‐Yu Ai   +4 more
semanticscholar   +1 more source

Understanding Quiet and Storm Time EMIC Waves—Van Allen Probes Results

Journal of Geophysical Research: Space Physics, 2023
Geomagnetic indices have been used as a proxy for studying electromagnetic ion cyclotron (EMIC) wave occurrences under different geomagnetic conditions.
B. Remya, A. Halford, D. Sibeck, K. Murphy, M. Fok   +4 more
semanticscholar   +1 more source

The Characteristics of EMIC Waves in the Magnetosphere Based on the Van Allen Probes and Arase Observations

Journal of Geophysical Research: Space Physics, 2021
We performed a comprehensive statistical study of electromagnetic ion cyclotron (EMIC) waves observed by the Van Allen Probes and Exploration of energization and Radiation in Geospace satellite (ERG/Arase).
C. Jun, Y. Miyoshi, S. Kurita, C. Yue, J. Bortnik, L. Lyons, Satoko Nakamura, M. Shoji, S. Imajo, C. Kletzing, Y. Kasahara, Y. Kasaba, S. Matsuda, F. Tsuchiya, A. Kumamoto, A. Matsuoka, I. Shinohara   +16 more
semanticscholar   +1 more source

Effect of EMIC waves on relativistic and ultrarelativistic electron populations: Ground‐based and Van Allen Probes observations [PDF]

, 2014
We study the effect of electromagnetic ion cyclotron (EMIC) waves on the loss and pitch angle scattering of relativistic and ultrarelativistic electrons during the recovery phase of a moderate geomagnetic storm on 11 October 2012.
M. Usanova, A. Drozdov, K. Orlova, I. Mann, Y. Shprits, M. Robertson, D. Turner, D. Milling, A. Kale, D. Baker, S. Thaller, G. Reeves, H. Spence, C. Kletzing, J. Wygant   +14 more
semanticscholar   +4 more sources

Calculation of the Atomic Oxygen Fluence on the Van Allen Probes

Journal of Geophysical Research: Space Physics, 2020
AbstractThe Van Allen Probes Mission consists of two identical spacecraft flying in highly elliptical orbits, with perigee altitudes originally near 600 km. During the low‐altitude periods of the orbits, the spacecrafts are immersed in a region of high‐density atomic oxygen.
G. Schumm, J. W. Bonnell, J. R. Wygant, F. S. Mozer   +3 more
openaire   +2 more sources

Global Empirical Models of Wave Amplitudes and Normal Angles of Banded Plasmaspheric Hiss Obtained From Van Allen Probes Observations

Journal of Geophysical Research: Space Physics, 2023
The unique banded structure of plasmaspheric hiss with an upper band above ∼200 Hz and a lower band below ∼150 Hz has been recently reported. Based on observations from the twin Van Allen Probes from 15 September 2012 to 30 June 2019, we statistically ...
Junhu Dong, Z. Xiang, B. Ni, Yangxizi Liu   +3 more
semanticscholar   +1 more source

Spin stabilization design and testing of the Van Allen Probes

2014 IEEE Aerospace Conference, 2014
This paper describes the design decisions taken and the mass properties tracking and testing flow chosen for the Van Allen Probes spacecraft and their deployable systems to achieve the coning angle requirements. Topics include a list of major requirements, a brief description of the error budget, a description of the tracking process of the spacecraft ...
David F. Persons, Heather Borowski, Simmie Berman, Weilun Cheng   +3 more
openaire   +2 more sources

Ionospheric Oxygen Outflows Directly Injected Into the Inner Magnetosphere: Van Allen Probes Statistics

Journal of Geophysical Research: Space Physics, 2022
Ionospheric oxygen outflows (IOOs) are frequently observed in Earth's inner magnetosphere. As a potential fast mass source of the inner magnetosphere, they have been extensively studied for decades. In this study, we identified 271 IOO events from 6‐year
Z. Liu, Q. Zong
semanticscholar   +1 more source

H+, He+, He++, O++, N+ EMIC Wave Occurrence and Its Dependence on Geomagnetic Conditions: Results From 7 Years of Van Allen Probes Observations

Journal of Geophysical Research: Space Physics
Electromagnetic ion cyclotron (EMIC) waves are believed to play an important role in the dynamics of the inner magnetosphere, including the ring current, the radiation belts and potentially, the cold plasma.
M. Usanova, L. Woodger, L. Blum, R. Ergun, C. Girard, D. Gallagher, R. Millan, J. Sample, A. Johnson, I. Mann, AL Usanova   +10 more
semanticscholar   +1 more source

Statistics and Models of the Electron Plasma Density From the Van Allen Probes

Journal of Geophysical Research: Space Physics
We use the full NASA Van Allen Probes mission (2012–2019) to extract the electron plasma density from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) and Electric Field and Waves (EFW) instruments and discuss the ...
J. Ripoll, S. Thaller, D. Hartley, D. Malaspina, W. Kurth, G. S. Cunningham, V. Pierrard, J. Wygant, AL Ripoll   +8 more
semanticscholar   +1 more source