Results 241 to 250 of about 36,673 (286)

Van Allen Probes Observations of Multi‐MeV Electron Drift‐Periodic Flux Oscillations in Earth's Outer Radiation Belt During the March 2017 Event

Journal of Geophysical Research: Space Physics, 2021
Radiation belt electrons undergo frequent acceleration, transport, and loss processes under various physical mechanisms. One of the most prevalent mechanisms is radial diffusion, caused by the resonant interactions between energetic electrons and ULF ...
Hong Zhao, T. Sarris, Xinlin Li, Max Weiner, Isabela G. Huckabee, D. Baker, A. Jaynes, S. Kanekal, S. Elkington, M. Barani, W. Tu, Wenlong Liu, Dianjun Zhang, M. Hartinger   +13 more
semanticscholar   +1 more source

Van Allen Radiation Belt Electron Dynamics During Geomagnetic Storms

2022
Space radiation is often identified as one of the most prominent dangers of space exploration. It mostly originates at the Sun and streams into the space between planets, creating hazardous radiation conditions at every point of the solar system which is not shielded by an atmosphere.
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Radio frequency synchrotron radiation from the Van Allen belts

Journal of Geophysical Research, 1967
Consider the case of Figure 1 in which an observer in space observes the earth at radio frequencies. In particular, consider the radio brightness distribution in one dimension; i.e. let the observer look at the earth such that he looks in the equatorial plane of the centered dipole model for the geomagnetic field.
J. F. Vesecky, A. M. Peterson
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The Evolution of Earth's Outer Radiation Belt Over Geomagnetic Storm Phase in Van Allen Probe Era

Journal of Geophysical Research: Space Physics
Earth's outer radiation belts are highly dynamic during geomagnetic storms. Using electron flux data from 226 keV to 2.6 MeV measured by the Van Allen Probes, we statistically analyzed the peak flux position Lpeak $\left({L}_{\mathit{peak}}\right)$ and ...
Xu Wang, L. Dai, Ren Yong, Senlin Xiong, Chi Wang   +4 more
semanticscholar   +1 more source

The Upper Boundary of the Van Allen Radiation Belts.

Nature, 1959
THREE measurements have now been made of the intensity and extent of the Earth's upper radiation belt and of the primary cosmic-ray intensity beyond. These were made by: (1) the American space probe, Pioneer III (December 6–7, 1958, ref. 1), (2) the Russian cosmic rocket, Mechta (January 2–4, 1959, ref. 2), and (3) the American space probe, Pioneer IV (
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Relationship of the Van Allen radiation belts to solar wind drivers

Journal of Atmospheric and Solar-Terrestrial Physics, 2008
Abstract Discovery of the Van Allen radiation belts by instrumentation flown on Explorer 1 in 1958 was the first major discovery of the Space Age. A view of the belts as distinct inner and outer zones of energetic particles with different sources was modified by observations made during the Cycle 22 maximum in solar activity in 1989–1991, the first ...
Mary K. Hudson, Brian T. Kress, Hans-R. Mueller, Jordan A. Zastrow, J. Bernard Blake   +4 more
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Magnetosonic Harmonic Falling and Rising Frequency Emissions Potentially Generated by Nonlinear Wave‐Wave Interactions in the Van Allen Radiation Belts

Geophysical Research Letters, 2018
Magnetosonic waves play a potentially important role in the complex evolution of the radiation belt electrons. These waves typically appear as discrete emission lines along the proton gyrofrequency harmonics, consistent with the prediction of the local ...
N. Liu, Z. Su, Huinan Zheng, Yuming Wang, Shui Wang   +4 more
semanticscholar   +1 more source

Ring currents in the region of the Van Allen radiation belts

Journal of Geophysical Research, 1961
By measurements of the earth's magnetic field in the region of the Van Allen radiation belts clear differences between the calculated dipole field and the observed values were found. During the flight of the cosmic rocket Mechta (2/1/1959) an anomaly of the magnetic field at a geocentric distance of about 21,000 km was discovered [Dolginow and Puschkow,
R. Fiebig, H. Voelcker
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The Savage Radiation of the Van Allen Belts Is Homegrown

Science, 2013
The solution to a decades-old space mystery may help save satellites from deadly radiation.
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Conjugate studies of whistler-mode waves in the Van Allen radiation belts

2011 XXXth URSI General Assembly and Scientific Symposium, 2011
Whistler-mode waves, especially chorus, can influence energetic electrons in the Van Allen radiation belts. These electromagnetic waves propagate over long distances in the magnetosphere. It has been previously shown that chorus can propagate from its equatorial source down to the subauroral ionosphere.
O. Santolik, J. S. Pickett, M. Parrot, D. A. Gurnett, N. Cornilleau-Wehrlin   +4 more
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