Results 1 to 10 of about 357,993 (360)

Collaborative Research Activities of the Arase and Van Allen Probes. [PDF]

Space Sci Rev, 2022
AbstractThis paper presents the highlights of joint observations of the inner magnetosphere by the Arase spacecraft, the Van Allen Probes spacecraft, and ground-based experiments integrated into spacecraft programs. The concurrent operation of the two missions in 2017–2019 facilitated the separation of the spatial and temporal structures of dynamic ...
Miyoshi Y, Shinohara I, Ukhorskiy S, Claudepierre SG, Mitani T, Takashima T, Hori T, Santolik O, Kolmasova I, Matsuda S, Kasahara Y, Teramoto M, Katoh Y, Hikishima M, Kojima H, Kurita S, Imajo S, Higashio N, Kasahara S, Yokota S, Asamura K, Kazama Y, Wang SY, Jun CW, Kasaba Y, Kumamoto A, Tsuchiya F, Shoji M, Nakamura S, Kitahara M, Matsuoka A, Shiokawa K, Seki K, Nosé M, Takahashi K, Martinez-Calderon C, Hospodarsky G, Colpitts C, Kletzing C, Wygant J, Spence H, Baker DN, Reeves GD, Blake JB, Lanzerotti L.   +44 more
europepmc   +8 more sources

Combined model of topside ionosphere and plasmasphere derived from radio-occultation and Van Allen Probes data [PDF]

Scientific Reports, 2022
In the last years, electron density profile functions characterized by a linear dependence on the scale height showed good results when approximating the topside ionosphere. The performance above 800 km, however, is not yet well investigated.
Fabricio S. Prol, Artem G. Smirnov, M. Mainul Hoque, Yuri Y. Shprits   +3 more
doaj   +5 more sources

Science of the Van Allen Probes Science Operations Centers. [PDF]

Space Sci Rev, 2022
AbstractThe Van Allen Probes mission operations materialized through a distributed model in which operational responsibility was divided between the Mission Operations Center (MOC) and separate instrument specific SOCs. The sole MOC handled all aspects of telemetering and receiving tasks as well as certain scientifically relevant ancillary tasks.
Manweiler JW, Breneman A, Niehof J, Larsen B, Romeo G, Stephens G, Halford A, Kletzing C, Brown LE, Spence H, Reeves G, Friedel R, Smith S, Skoug R, Blake B, Baker D, Kanekal S, Hoxie V, Jaynes A, Wygant J, Bonnell J, Crawford D, Gkioulidou M, Lanzerotti LJ, Mitchell DG, Gerrard A, Ukhorskiy A, Sotirelis T, Barnes RJ, Millan R, Harris B.   +30 more
europepmc   +4 more sources

Van Allen Probes Observations of Symmetric Stormtime Compressional ULF Waves. [PDF]

J Geophys Res Space Phys, 2022
AbstractPrevious spacecraft studies showed that stormtime poloidal ultralow‐frequency (ULF) waves in the ring current region have an antisymmetric (second harmonic) mode structure about the magnetic equator. This paper reports Van Allen Probes observations of symmetric ULF waves in the postnoon sector during a moderate geomagnetic storm.
Takahashi K, Crabtree C, Ukhorskiy AY, Boyd A, Denton RE, Turner D, Gkioulidou M, Vellante M, Spence HE.   +8 more
europepmc   +4 more sources

Spacecraft surface charging within geosynchronous orbit observed by the Van Allen Probes. [PDF]

Space Weather, 2016
AbstractUsing the Helium Oxygen Proton Electron (HOPE) and Electric Field and Waves (EFW) instruments from the Van Allen Probes, we explored the relationship between electron energy fluxes in the eV and keV ranges and spacecraft surface charging. We present statistical results on spacecraft charging within geosynchronous orbit by L and MLT.
Sarno-Smith LK, Larsen BA, Skoug RM, Liemohn MW, Breneman A, Wygant JR, Thomsen MF.   +6 more
europepmc   +6 more sources

Occurrence Rates of Electromagnetic Ion Cyclotron (EMIC) Waves With Rising Tones in the Van Allen Probes Data Set. [PDF]

J Geophys Res Space Phys, 2023
In Fourier time‐frequency power spectrograms of satellite magnetic field data, electromagnetic ion cyclotron (EMIC) waves may feature discrete, rising tone structures that rapidly increase in frequency.
Sigsbee K, Kletzing CA, Faden J, Smith CW.   +3 more
europepmc   +2 more sources

A Statistical Survey of Radiation Belt Dropouts Observed by Van Allen Probes [PDF]

Geophysical Research Letters, 2018
A statistical analysis on the radiation belt dropouts is performed based on 4 years of electron phase space density data from the Van Allen Probes.
Zheng Xiang, Weichao Tu, Binbin Ni, M. G. Henderson, Xing Cao   +4 more
doaj   +4 more sources

Earth's Van Allen Radiation Belts: From Discovery to the Van Allen Probes Era [PDF]

Journal of Geophysical Research: Space Physics, 2019
AbstractDiscovery of the Earth's Van Allen radiation belts by instruments flown on Explorer 1 in 1958 was the first major discovery of the Space Age. The observation of distinct inner and outer zones of trapped megaelectron volt (MeV) particles, primarily protons at low altitude and electrons at high altitude, led to early models for source and loss ...
Mary K. Hudson, Mary K. Hudson, Wen Li
openaire   +3 more sources

A Test of Energetic Particle Precipitation Models Using Simultaneous Incoherent Scatter Radar and Van Allen Probes Observations. [PDF]

J Geophys Res Space Phys, 2022
Quantification of energetic electron precipitation caused by wave‐particle interactions is fundamentally important to understand the cycle of particle energization and loss of the radiation belts. One important way to determine how well the wave‐particle
Sanchez ER, Ma Q, Xu W, Marshall RA, Bortnik J, Reyes P, Varney R, Kaeppler S.   +7 more
europepmc   +2 more sources

A comparison of energetic particle energization observations at MMS and injections at Van Allen Probes

Frontiers in Astronomy and Space Sciences, 2023
In this study, we examine particle energization and injections that show energetic electron enhancements at both MMS in the magnetotail and Van Allen Probes in the inner magnetosphere.
S. N. F. Chepuri, A. N. Jaynes, D. L. Turner, C. Gabrielse, D. N. Baker, B. H. Mauk, I. J. Cohen, T. Leonard, J. B. Blake, J. F. Fennell   +9 more
doaj   +2 more sources