Results 11 to 20 of about 30,333 (190)

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

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 ...
W. Li, M.K. Hudson
openaire   +1 more source

EVIDENCE OF THE EARTH’S INNER RADIATION BELTS DURING THE LOW SOLAR AND GEOMAGNETIC ACTIVITY OBTAINED WITH THE STEP-F INSTRUMENT [PDF]

Radio Physics and Radio Astronomy, 2021
Purpose: The subject of research is the spatio-temporal charged particles in the Earth’s magnetosphere outside the South Atlantic magnetic Anomaly during the 11-year cycle of solar activity minimum.
O. V. Dudnik, O. V. Yakovlev
doaj   +1 more source

A data assimilation-based forecast model of outer radiation belt electron fluxes

Earth and Planetary Physics, 2023
Because radiation belt electrons can pose a potential threat to the safety of satellites orbiting in space, it is of great importance to develop a reliable model that can predict the highly dynamic variations in outer radiation belt electron fluxes.
Yuan Lei, Xing Cao, BinBin Ni, Song Fu, TaoRong Luo, XiaoYu Wang   +5 more
doaj   +1 more source

Van Allen Radiation Belts: An Important Challenge for Astrobiology Missions [PDF]

فناوری در مهندسی هوافضا, 2020
Manned space missions account for a large proportion of future space travel missions.Van Allen radiation belts are major challenges of space missions with an astrobiology approach.
Iman Shafieenejad, Sharareh Ghasemi, nadia noori   +2 more
doaj  

New Perspective on Phase Space Density Analysis for Outer Radiation Belt Enhancements: The Influence of MeV Electron Injections

Geophysical Research Letters, 2023
Observation of growing phase space density (PSD) peak in the outer electron radiation belt has been considered evidence for local wave‐driven acceleration as a primary cause of radiation belt enhancement.
H.‐J. Kim, K.‐C. Kim, S.‐J. Noh, L. Lyons, D.‐Y. Lee, W. Choe   +5 more
doaj   +1 more source

Modeling inward diffusion and slow decay of energetic electrons in the Earth\u27s outer radiation belt [PDF]

, 2015
A new 3-D diffusion code is used to investigate the inward intrusion and slow decay of energetic radiation belt electrons (\u3e0.5 MeV) observed by the Van Allen Probes during a 10 day quiet period on March 2013.
Angelopoulos, V., Baker, D. N., Blake, J. B., Claudepierre, S., Fennell, J. F., Henderson, M. G., Hospodarsky, G. B., Kletzing, C A., Kurth, W. S., Li, W., Ma, Q., Ni, B., Reeves, Geoffrey, Spence, Harlan E., Thorne, R. M.   +14 more
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Observations of Radiation Belt Losses Due to Cyclotron Wave-Particle Interactions [PDF]

, 2020
Electron loss to the atmosphere plays a critical role in driving dynamics of the Earths Van Allen radiation belts and slot region. This is a review of atmospheric loss of radiation belt electrons caused by plasma wave scattering via Doppler-shifted ...
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Outer radiation belt and inner magnetospheric response to sheath regions of coronal mass ejections: a statistical analysis [PDF]

Annales Geophysicae, 2020
The energetic electron content in the Van Allen radiation belts surrounding the Earth can vary dramatically at several timescales, and these strong electron fluxes present a hazard for spacecraft traversing the belts.
M. M. H. Kalliokoski, E. K. J. Kilpua, A. Osmane, D. L. Turner, A. N. Jaynes, L. Turc, H. George, M. Palmroth, M. Palmroth   +8 more
doaj   +1 more source

On the cause and extent of outer radiation belt losses during the 30 September 2012 dropout event [PDF]

, 2014
On 30 September 2012, a flux dropout occurred throughout Earth\u27s outer electron radiation belt during the main phase of a strong geomagnetic storm.
Angelopoulos, V., Baker, D. N., Blake, J. B., Boyd, A. J., Claudepierre, S., Henderson, M. G., Huang, Chia-Lin L., Li, W., Morley, S. K., Reeves, Geoffrey, Rodriguez, J. V., Spence, Harlan E., Turner, D. L.   +12 more
core   +3 more sources