Results 81 to 90 of about 30,333 (190)

Comparative Analysis of Sub GTO, GTO and Super GTO in Orbit Raising for All Electric Satellites

open access: yesSakarya University Journal of Computer and Information Sciences, 2018
Electric propulsion system has been used on many geostationary communication satellites for station keeping maneuver because of having high specific impulse values.
İbrahim Öz
doaj  

Estimates of primary and secondary particle doses behind aluminum and polyethylene slabs due to incident solar-flare and Van Allen belt protons [PDF]

open access: yes
Primary and secondary particle radiation doses shielded from solar flare and Van Allen belt protons by aluminum and polyethylene ...
Scott, W. W.
core   +1 more source

Rapid Acceleration Bursts in the Van Allen Radiation Belt

open access: yesJournal of Geophysical Research: Space Physics
AbstractThe fast Van Allen radiation belt electron dynamics during geomagnetic storms have not yet been fully explained, in part due to limitations of standard satellite missions in both orbit and the number of spacecraft. Here we overcome these limitations using measurements from the Global Positioning System (GPS) constellation during an acceleration
L. Olifer   +7 more
openaire   +1 more source

The van allen radiation belt [PDF]

open access: yes
Van Allen radiation belt and energetic protons and electrons trapped in geomagnetic ...
Farley, T. A.
core   +1 more source

A summary of the BARREL campaigns: Technique for studying electron precipitation. [PDF]

open access: yes, 2015
BARREL observed electron precipitation over wide range of energy and timescalesPrecipitating electron distribution is determined using spectroscopy for 19 January 2013 eventBARREL timing data has accuracy within sampling interval of 0.05 ...
Anderson, BR   +8 more
core   +2 more sources

Quantitative assessment of Earth’s radiation belt modeling [PDF]

open access: yes, 2017
The “Quantitative Assessment of Radiation Belt Modeling” focus group was in place at Geospace Environment Modeling from 2014 to 2018. The overarching goals of this focus group were to bring together the current state‐of‐the‐art models for the ...
Albert, J. M.   +3 more
core   +1 more source

A Probabilistic Model for Global EMIC Wave Activity Using Van Allen Probes Observations

open access: yesEarth and Space Science
Electromagnetic ion cyclotron (EMIC) waves play a key role in radiation belt dynamics through resonant interactions. However, their low occurrence probability, high variability, and spatial intermittency pose challenges for accurate modeling.
Sung Jun Noh   +3 more
doaj   +1 more source

Research advances in the data assimilative modeling of the Earth's radiation belt electrons

open access: yes地球与行星物理论评
The Earth's radiation belts are regions where high-energy charged particles congregate in near-Earth space. Given that high-energy particles in the radiation belts pose a severe threat to the safety of spacecraft in orbit and astronauts, it is of vital ...
Xing Cao   +4 more
doaj   +1 more source

James van Allen and his namesake NASA mission [PDF]

open access: yes, 2013
In many ways, James A. Van Allen defined and “invented” modern space research. His example showed the way for government-university partners to pursue basic research that also served important national and international goals.
Baker, D. N.   +7 more
core   +2 more sources

Dynamics of Megaelectron Volt Electrons Observed in the Inner Belt by PROBA-V/EPT

open access: yes, 2019
Using the observations of the EPT (Energetic Particle Telescope) onboard the satellite PROBA-V we study the dynamics of inner and outer belt electrons from 500 keV to 8 MeV during quiet periods and geomagnetic storms.
Botek, Edith   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy