scholarly journals First evidence for chorus at a large geocentric distance as a source of plasmaspheric hiss: Coordinated THEMIS and Van Allen Probes observation

2015 ◽  
Vol 42 (2) ◽  
pp. 241-248 ◽  
Author(s):  
W. Li ◽  
L. Chen ◽  
J. Bortnik ◽  
R. M. Thorne ◽  
V. Angelopoulos ◽  
...  
Keyword(s):  
Geocentric Distance ◽  
Van Allen Probes

scholarly journals Electromagnetic power of lightning superbolts from Earth to space

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
J.-F. Ripoll ◽  
T. Farges ◽  
D. M. Malaspina ◽  
G. S. Cunningham ◽  
E. H. Lay ◽  
...  
Keyword(s):  
Low Frequency ◽  
Optical Emission ◽  
High Energy ◽  
Very Low Frequency ◽  
Electromagnetic Power ◽  
Power Spectral ◽  
High Energy Tail ◽  
Van Allen Probes ◽  
Long Time ◽  
Low Frequency Waves

AbstractLightning superbolts are the most powerful and rare lightning events with intense optical emission, first identified from space. Superbolt events occurred in 2010-2018 could be localized by extracting the high energy tail of the lightning stroke signals measured by the very low frequency ground stations of the World-Wide Lightning Location Network. Here, we report electromagnetic observations of superbolts from space using Van Allen Probes satellite measurements, and ground measurements, and with two events measured both from ground and space. From burst-triggered measurements, we compute electric and magnetic power spectral density for very low frequency waves driven by superbolts, both on Earth and transmitted into space, demonstrating that superbolts transmit 10-1000 times more powerful very low frequency waves into space than typical strokes and revealing that their extreme nature is observed in space. We find several properties of superbolts that notably differ from most lightning flashes; a more symmetric first ground-wave peak due to a longer rise time, larger peak current, weaker decay of electromagnetic power density in space with distance, and a power mostly confined in the very low frequency range. Their signal is absent in space during day times and is received with a long-time delay on the Van Allen Probes. These results have implications for our understanding of lightning and superbolts, for ionosphere-magnetosphere wave transmission, wave propagation in space, and remote sensing of extreme events.

scholarly journals Electric and magnetic radial diffusion coefficients using the Van Allen probes data

2016 ◽  
Vol 121 (10) ◽  
pp. 9586-9607 ◽  
Author(s):  
Ashar F. Ali ◽  
David M. Malaspina ◽  
Scot R. Elkington ◽  
Allison N. Jaynes ◽  
Anthony A. Chan ◽  
...  
Keyword(s):  
Diffusion Coefficients ◽  
Radial Diffusion ◽  
Van Allen Probes

scholarly journals Statistical distribution of EMIC wave spectra: Observations from Van Allen Probes

2016 ◽  
Vol 43 (24) ◽  
pp. 12,348-12,355 ◽  
Author(s):  
X.-J. Zhang ◽  
W. Li ◽  
R. M. Thorne ◽  
V. Angelopoulos ◽  
J. Bortnik ◽  
...  
Keyword(s):  
Statistical Distribution ◽  
Wave Spectra ◽  
Emic Wave ◽  
Van Allen Probes

scholarly journals Global time-dependent chorus maps from low-Earth-orbit electron precipitation and Van Allen Probes data

2014 ◽  
Vol 41 (3) ◽  
pp. 755-761 ◽  
Author(s):  
Yue Chen ◽  
Geoffrey D. Reeves ◽  
Reiner H. W. Friedel ◽  
Gregory S. Cunningham
Keyword(s):  
Low Earth Orbit ◽  
Electron Precipitation ◽  
Time Dependent ◽  
Earth Orbit ◽  
Van Allen Probes ◽  
Global Time

Statistical study of the storm time radiation belt evolution during Van Allen Probes era: CME- versus CIR-driven storms

2017 ◽  
Vol 122 (8) ◽  
pp. 8327-8339 ◽  
Author(s):  
Xiao-Chen Shen ◽  
Mary K. Hudson ◽  
Allison N. Jaynes ◽  
Quanqi Shi ◽  
Anmin Tian ◽  
...  
Keyword(s):  
Radiation Belt ◽  
Statistical Study ◽  
Van Allen Probes

scholarly journals Poloidal Mode Wave-Particle Interactions Inferred From Van Allen Probes and CARISMA Ground-Based Observations

2018 ◽  
Vol 123 (6) ◽  
pp. 4652-4667 ◽  
Author(s):  
C. Wang ◽  
R. Rankin ◽  
Y. Wang ◽  
Q.-G. Zong ◽  
X. Zhou ◽  
...  
Keyword(s):  
Particle Interactions ◽  
Mode Wave ◽  
Van Allen Probes ◽  
Wave Particle Interactions

Elliptical Orbit of Asteroid 1986 QE1

1989 ◽  
Vol 12 ◽  
pp. 21-24
Author(s):  
H. Debehogne ◽  
L.E. Machado ◽  
S. Vaz ◽  
E.R. Netto
Keyword(s):  
Photographic Plate ◽  
Elliptical Orbit ◽  
Orbital Elements ◽  
European Southern Observatory ◽  
Geocentric Distance ◽  
Before And After

We present the orbital elements of asteroid QE1 (pro visional designation) identified in august 26, 1986, on a photographic plate obtained at the GPO telescope of the European Southern Observatory (ESO), La Silla, Chile, as well as the positions (AR and Dec) referred to 1950.0. Residues (0 - C) of the position in AR and Dec of the asteroid are given, both before and after applying variation in the geocentric distance.

Observation of unusual chorus elements by Van Allen Probes

2021 ◽  
Author(s):  
Si Liu ◽  
Zhonglei Gao ◽  
Fuliang Xiao ◽  
Qian He ◽  
Tong Li ◽  
...  
Keyword(s):  
Van Allen Probes

Statistics of Magnetosonic Waves in the Slot Region Observed by Van Allen Probes

2021 ◽  
Author(s):  
Ling Yan ◽  
Xing Cao ◽  
Man Hua ◽  
Binbin Ni ◽  
Yuannong Zhang
Keyword(s):  
Van Allen Probes

Radiation-Induced Single-Event Effects on the Van Allen Probes Spacecraft

2017 ◽  
Vol 64 (11) ◽  
pp. 2782-2793 ◽  
Author(s):  
Richard H. Maurer ◽  
Kristin Fretz ◽  
Matthew P. Angert ◽  
David L. Bort ◽  
John O. Goldsten ◽  
...  
Keyword(s):  
Single Event ◽  
Single Event Effects ◽  
Van Allen Probes ◽  
Radiation Induced
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