Results 51 to 60 of about 357,993 (360)

Quasi Thermal Noise Spectroscopy for Van Allen Probes [PDF]

Journal of Geophysical Research: Space Physics, 2019
AbstractQuasi thermal fluctuations in the Langmuir/upper‐hybrid frequency range are pervasively observed in space plasmas including the radiation belt and the ring current region of inner magnetosphere as well as the solar wind. The quasi thermal noise spectroscopy may be employed in order to determine the electron density and temperature as well as to
Hyangpyo Kim, Hyangpyo Kim, Jungjoon Seough, Peter H. Yoon, Peter H. Yoon, Peter H. Yoon, Junga Hwang, Junga Hwang   +7 more
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Quantifying the Sheath Impedance of the Electric Double Probe Instrument on the Van Allen Probes

Journal of Geophysical Research: Space Physics, 2022
AbstractSpherical double probe electric field sensors become electrically coupled to magnetospheric plasma during operation, leading to an instrument response that varies with the local plasma environment. Here, a method is developed for determining this variable coupling impedance for each measurement direction by using periods of favorable boom, wave,
Hartley, D. P., Christopher, I. W., Kletzing, C. A., Kurth, W. S., Santolik, O., Kolmasova, I., Wygant, J. R., Bonnell, J. W.   +7 more
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Bayesian Model for HOPE Mass Spectrometers on Van Allen Probes [PDF]

Journal of Geophysical Research: Space Physics, 2020
AbstractSpace instruments rely heavily on modeling to predict and understand the instrument response, enabling a determination of the capabilities and resolution. The Bayesian approach provides a framework to incorporate prior knowledge and propagate uncertainty to predict the instrument response.
Alisha Daya Vira, Brian A Larsen, Ruth M. Skoug, Philip A Fernandes   +3 more
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Correction to: The Van Allen Probes Electric Field and Waves Instrument: Science Results, Measurements, and Access to Data

Space Science Reviews, 2022
The Van Allen Probes Electric Fields and Waves (EFW) instrument provided measurements of electric fields and spacecraft floating potentials over a wide dynamic range from DC to 6.5 kHz near the equatorial plane of the inner magnetosphere between 600 km ...
A. Breneman, J. Wygant, S. Tian, C. Cattell, S. Thaller, K. Goetz, E. Tyler, C. Colpitts, L. Dai, K. Kersten, J. Bonnell, S. Bale, F. Mozer, P. Harvey, G. Dalton, R. Ergun, D. Malaspina, C. Kletzing, W. Kurth, G. Hospodarsky, C. Smith, R. Holzworth, S. Lejosne, O. Agapitov, A. Artemyev, M. Hudson, R. Strangeway, D. Baker, X. Li, J. Albert, J. Foster, P. Erickson, C. Chaston, I. Mann, E. Donovan, C. Cully, V. Krasnoselskikh, J. Blake, R. Millan   +38 more
semanticscholar   +1 more source

Morningside Pi2 Pulsation Observed in Space and on the Ground [PDF]

Journal of Astronomy and Space Sciences, 2015
In this study, we examined a morningside Pi2 pulsation, with a non-substorm signature, that occurred in very quiet geomagnetic conditions (Kp = 0) at 05:38 UT on December 8, 2012, using data obtained by Van Allen Probes A and B (VAP-A and VAP-B ...
Essam Ghamry
doaj   +1 more source

Efficient Scattering Loss of Energetic Electrons by Enhanced Higher‐Band ECH Waves Observed by Van Allen Probes

Geophysical Research Letters, 2023
Electron cyclotron harmonic (ECH) waves, which are responsible for the diffuse aurora, are usually observed with the strongest intensity in the first band.
Qiwu Yang, Si Liu, Hongming Yang, Sai Zhang, Jiawen Tang, F. Xiao, Qinghua Zhou, Zhonglei Gao, Yihua He, Zhoukun Deng, Ping Li   +10 more
semanticscholar   +1 more source

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
N. J. Fox, James L. Burch
openaire   +2 more sources

ULF Wave Driven Radial Diffusion During Geomagnetic Storms: A Statistical Analysis of Van Allen Probes Observations

Journal of Geophysical Research: Space Physics, 2021
The impact of radial diffusion in storm time radiation belt dynamics is well‐debated. In this study we quantify the changes and variability in radial diffusion coefficients during geomagnetic storms.
J. Sandhu, I. J. Rae, J. Wygant, A. Breneman, S. Tian, C. E. Watt, R. Horne, L. Ozeke, Marina Georgiou, M. Walach   +9 more
semanticscholar   +1 more source

Analysis of plasmaspheric hiss wave amplitudes inferred from low-altitude POES electron data: Technique sensitivity analysis [PDF]

, 2015
A novel technique capable of inferring wave amplitudes from low-altitude electron measurements from the Polar Operational Environmental Satellites (POES) spacecraft has been previously proposed to construct a global dynamic model of chorus and ...
Blake, J. B., Bortnik, J., de Soria-Santacruz, M., Fennell, Joseph F., Hospodarsky, G. B., Kletzing, C A., Kurth, W. S., Li, W., Ma, Q., Ni, B., Reeves, Geoffrey, Spence, Harlan E., Thorne, R. M.   +12 more
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Outer Radiation Belt Flux and Phase Space Density Response to Sheath Regions: Van Allen Probes and GPS Observations

Journal of Geophysical Research: Space Physics, 2023
Turbulent and compressed sheath regions preceding interplanetary coronal mass ejections strongly impact electron dynamics in the outer radiation belt. Changes in electron flux can occur on timescales of tens of minutes, which are unlikely to be captured ...
M. Kalliokoski, M. Henderson, S. Morley, E. Kilpua, A. Osmane, L. Olifer, D. Turner, A. Jaynes, H. George, S. Hoilijoki, L. Turc, M. Palmroth   +11 more
semanticscholar   +1 more source