Results 31 to 40 of about 30,333 (190)

Prompt energization of relativistic and highly relativistic electrons during a substorm interval: Van Allen Probes observations [PDF]

, 2014
On 17 March 2013, a large magnetic storm significantly depleted the multi-MeV radiation belt. We present multi-instrument observations from the Van Allen Probes spacecraft Radiation Belt Storm Probe A and Radiation Belt Storm Probe B at ~6 Re in the ...
Baker, Baker, Baker, Baker, Blake, C. A. Kletzing, D. N. Baker, Foster, Foster, Foster, Foster, Foster, G. D. Reeves, H. E. Spence, J. C. Foster, J. R. Wygant, Kletzing, Liu, Mauk, P. J. Erickson, Reeves, Roederer, S. A. Thaller, S. G. Claudepierre, Shprits, Shprits, Spence, Tsyganenko, W. Kurth, Wygant, Y. Y. Shprits   +30 more
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Intense duskside lower band chorus waves observed by Van Allen Probes: Generation and potential acceleration effect on radiation belt electrons [PDF]

, 2014
Local acceleration driven by whistler mode chorus waves largely accounts for the enhancement of radiation belt relativistic electron fluxes, whose favored region is usually considered to be the plasmatrough with magnetic local time approximately from ...
Baker, D. N., Blake, J. B., Funsten, H. O., He, Zhaoguo, Hospodarsky, G. B., Kletzing, C A., Kurth, W. S., Liu, Rui, Reeves, Geoffrey, Shen, Chao, Shen, Chenglong, Spence, Harlan E., Su, Zhenpeng, Wang, C. B., Wang, Shui, Wang, Yuming, Wygant, J. R., Xiao, Fuliang, Zhang, Min, Zheng, Huinan, Zhu, Hui   +20 more
core   +2 more sources

An event of extreme relativistic and ultra-relativistic electron enhancements following the arrival of consecutive corotating interaction regions: Coordinated observations by Van Allen Probes, Arase, THEMIS and Galileo satellites

Frontiers in Astronomy and Space Sciences, 2022
During July to October of 2019, a sequence of isolated Corotating Interaction Regions (CIRs) impacted the magnetosphere, for four consecutive solar rotations, without any interposed Interplanetary Coronal Mass Ejections.
Afroditi Nasi, Christos Katsavrias, Ioannis A. Daglis, Ioannis A. Daglis, Ingmar Sandberg, Sigiava Aminalragia-Giamini, Sigiava Aminalragia-Giamini, Wen Li, Yoshizumi Miyoshi, Hugh Evans, Takefumi Mitani, Ayako Matsuoka, Iku Shinohara, Takeshi Takashima, Tomoaki Hori, Georgios Balasis   +15 more
doaj   +1 more source

Event-specific chorus wave and electron seed population models in DREAM3D using the Van Allen Probes [PDF]

, 2014
The DREAM3D diffusion model is applied to Van Allen Probes observations of the fast dropout and strong enhancement of MeV electrons during the October 2012 double-dip storm. We show that in order to explain the very different behavior in the two dips,
Agapitov, Albert, Brautigam, Brautigam, Chen, Chen, D. N. Baker, Elkington, G. D. Reeves, G. S. Cunningham, Ganushkina, Glauert, H. Spence, Horne, Horne, Hudson, Hudson, J. B. Blake, Kletzing, Kress, Li, Li, Li, Meredith, Meredith, Morley, Reeves, Reeves, Reeves, Roederer, Runov, S. K. Morley, Schulz, Selesnick, Selesnick, Shprits, Thorne, Tsyganenko, Tu, Tu, Tu, Turner, Weichao Tu, Y. Chen   +43 more
core   +2 more sources

The 600 keV electron injections in the Earth’s outer radiation belt: A statistical study

Earth and Planetary Physics, 2022
Relativistic electron injections are one of the mechanisms of relativistic (≥0.5 MeV) electron enhancements in the Earth’s outer radiation belt. In this study, we present a statistical observation of 600 keV electron injections in the outer radiation ...
ChaoLing Tang, Xu Wang, BinBin Ni, ZhengPeng Su, JiChun Zhang   +4 more
doaj   +1 more source

Near-Earth injection of MeV electrons associated with intense dipolarization electric fields: Van Allen Probes observations. [PDF]

, 2015
Substorms generally inject tens to hundreds of keV electrons, but intense substorm electric fields have been shown to inject MeV electrons as well. An intriguing question is whether such MeVelectron injections can populate the outer radiation belt.
Angelopoulos, Vassilis, Baker, Daniel N, Blake, J Bernard, Breneman, Aaron, Cattell, Cynthia A, Chen, Lunjin, Claudepierre, Seth, Dai, Lei, Duan, Suping, Fennell, Joseph, Fruehauff, Dennis, Funsten, Herbert O, He, Zhaohai, Kletzing, Craig, Li, Xinlin, Malaspina, David, Reeves, Geoffrey D, Spence, Harlan E, Su, Zhenpeng, Tang, Xiangwei, Tao, Xin, Thaller, Scott, Turner, Drew L, Wang, Chi, Wygant, John R   +24 more
core   +2 more sources

The Phase Space Density Evolution of Radiation Belt Electrons under the Action of Solar Wind Dynamic Pressure

Magnetochemistry, 2023
Earth’s radiation belt and ring current are donut-shaped regions of energetic and relativistic particles, trapped by the geomagnetic field. The strengthened solar wind dynamic pressure (Pdyn) can alter the structure of the geomagnetic field, which can ...
Peng Hu, Haimeng Li, Zhihai Ouyang, Rongxin Tang, Liangjin Song, An Yuan, Bopu Feng, Yangyang Wang, Wenqian Zou   +8 more
doaj   +1 more source

Can strong substorm-associated MeV electron injections be an important cause of large radiation belt enhancements?

Frontiers in Astronomy and Space Sciences, 2023
It has become well-established that strong outer radiation belt enhancements are due to wave-driven electron energization by whistler-mode chorus waves.
Hee-Jeong Kim, S. J. Noh, S. J. Noh, D. Y. Lee, L. Lyons, J. Bortnik, T. Nagai, W. Choe, M. Hua   +8 more
doaj   +1 more source

Empirically Estimated Electron Lifetimes in the Earth's Radiation Belts: Van Allen Probe Observations [PDF]

Geophysical Research Letters, 2020
AbstractWe use measurements from NASA's Van Allen Probes to calculate the decay time constants for electrons over a wide range of energies (30 keV to 4 MeV) and values ( = 1.3–6.0) in the Earth's radiation belts. Using an automated routine to identify flux decay events, we construct a large database of lifetimes for near‐equatorially mirroring ...
Claudepierre, SG, Ma, Q, Bortnik, J, O'Brien, TP, Fennell, JF, Blake, JB   +5 more
openaire   +5 more sources

Quantifying the radiation belt seed population in the 17 March 2013 electron acceleration event [PDF]

, 2014
We present phase space density (PSD) observations using data from the Magnetic Electron Ion Spectrometer instrument on the Van Allen Probes for the 17 March 2013 electron acceleration event.
Baker, D. N., Blake, J. B., Boyd, A. J., Claudepierre, S., Fennell, Joseph F., Reeves, Geoffrey, Spence, Harlan E., Turner, D. L.   +7 more
core   +2 more sources