Results 1 to 10 of about 22,029 (223)

On the contribution of thermal excitation to the total 630.0 nm emissions in the northern cusp ionosphere [PDF]

open access: yes, 2017
Direct impact excitation by precipitating electrons is believed to be the main source of 630.0 nm emissions in the cusp ionosphere. However, this paper investigates a different source, 630.0 emissions caused by thermally excited atomic oxygen O$(^{1}$D ...
Johnsen, Magnar G.   +3 more
core   +3 more sources

Imaging ionospheric inhomogeneities using spaceborne synthetic aperture radar [PDF]

open access: yes, 2011
We present a technique and results of 2-D imaging of Faraday rotation and total electron content using spaceborne L band polarimetric synthetic aperture radar (PolSAR).
Chapman, B.   +4 more
core   +2 more sources

Transpolar voltage and polar cap flux during the substorm cycle and steady convection events [PDF]

open access: yes, 2009
Transpolar voltages observed during traversals of the polar cap by the Defense Meteorological Satellite Program (DMSP) F-13 spacecraft during 2001 are analyzed using the expanding-contracting polar cap model of ionospheric convection.
Ahn   +78 more
core   +1 more source

Dynamic Drivers of TIFe Diurnal Cycle in Antarctica [PDF]

open access: yesEPJ Web of Conferences, 2020
The discovery of the thermosphere-ionosphere Fe (TIFe) layers has opened a door to exploring the least understood thermosphere and ionosphere region between 100 and 200 km with ground-based lidar instruments. The characteristics of the polar TIFe layers,
Yu Zhibin   +3 more
doaj   +1 more source

Stellar wind-magnetosphere interaction at exoplanets: computations of auroral radio powers

open access: yes, 2016
We present calculations of the auroral radio powers expected from exoplanets with magnetospheres driven by an Earth-like magnetospheric interaction with the solar wind.
Milan, S. E., Nichols, J. D.
core   +1 more source

The Key Role of Cold Ionospheric Ions As a Source of Hot Magnetospheric Plasma and As a Driver of the Dynamics of Substorms and Storms

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The solar wind has been seen as the major source of hot magnetospheric plasma since the early 1960’s. More recent theoretical and observational studies have shown that the cold (few eV) polar wind and warmer polar cusp plasma that flow continuously ...
C. R. Chappell   +5 more
doaj   +1 more source

Stare radar views polar ionosphere

open access: yesEos, Transactions American Geophysical Union, 1978
The ionosphere serves as a closure path for electrical currents flowing from one part of the magnetosphere to another. How this happens is shown in detail by recent work of R. A. Greenwald at the Max Planck Institute, using the Scandinavian twin auroral radar experiment (Stare).
openaire   +1 more source

Solar Influences on Geomagnetic and Related Phenomena [PDF]

open access: yes, 1961
Solar influences on geomagnetic and related ...
Vestine, E. H.
core   +2 more sources

Magnetic Shear Damped Polar Convective Fluid Instabilities

open access: yes, 2017
The influence of the magnetic field shear is studied on the $E\times B$ (and/or Gravitational) and the Current Convective Instabilities (CCI) occuring in the High latitude F-layer ionosphere.
Atul, Jyoti K   +6 more
core   +1 more source

Upper atmospheres and ionospheres of planets and satellites

open access: yes, 2017
The upper atmospheres of the planets and their satellites are more directly exposed to sunlight and solar wind particles than the surface or the deeper atmospheric layers.
A Bhardwaj   +109 more
core   +1 more source

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