Results 181 to 190 of about 4,774 (237)

Revealing Flare Energetics and Dynamics with SDO EVE Solar Extreme Ultraviolet Spectral Irradiance Observations. [PDF]

Sol Phys
Woods TN, Chamberlin PC, Jones A, Mason JP, Qian L, Warren HP, Woodraska D, Borelli R, Eparvier FG, Gonzalez G.   +9 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Blobs and irregularities in the auroral ionosphere

Journal of Atmospheric and Terrestrial Physics, 1996
Abstract The EISCAT BLOB experiment has been designed to study structuring of the plasma in the auroral ionosphere on scales of tens of kilometres transverse to the magnetic field. Results are presented from the initial observations that show three different types of field-aligned irregularities occurring within a time interval of about two hours ...
S.E. Pryse, L. Kersley, I.K. Walker
openaire   +1 more source

Physicochemical model of the auroral ionosphere

Cosmic Research, 2017
A physicochemical model of excited polar ionosphere has been presented. The model makes it possible to calculate vertical profiles of concentrations of the following excited and ionized constituents: O2 +, N2 +, O+(4S), O+(2D), O+(2P), O(1D), O(1S), N(4S), N(2D), N(2P), NO, NO+, N+, N2 ...
Zh. V. Dashkevich, V. E. Ivanov, T. I. Sergienko, B. V. Kozelov   +3 more
openaire   +1 more source

Monitoring of the auroral ionosphere

2012
The ionized atmosphere of the Earth is composed of a series of overlapping layers. In each layer, there is an altitude of maximum density, above and below which the ionization density tends to drop off. The altitude of the peak density in D region is normally around 90 km, but this may decrease considerably to ~ 80 km when the solar X-ray flux is ...
Oleg Troshichev, Alexander Janzhura
openaire   +1 more source

Auroral ionosphere models

Journal of Atmospheric and Terrestrial Physics, 1972
The electron density height profile in an auroral arc is calculated for equilibrium conditions from the electron continuity equation. The ionization production rate and the loss by dissociative recombination in the continuity equation is taken from observations of Bryant et al. (1970) while the ion-atom recombination loss rate was calculated from quinn
openaire   +1 more source

The motions of peaks in ionospheric auroral absorption and auroral infrasonic waves

Journal of Atmospheric and Terrestrial Physics, 1974
Abstract The average direction of motion of ‘peaks’ in ionospheric auroral absorption events changes with local time in a manner similar to that of the direction of propagation of auroral infrasonic bow waves (AIW) as observed in the auroral zone.
Charles E. Wilson, John K. Hargreaves
openaire   +1 more source

Disturbances in the lower auroral ionosphere

Journal of Atmospheric and Terrestrial Physics, 1959
Abstract The solar particles that enter the atmosphere and produce the luminous aurora are known to include protons, which also ionize the atmosphere. As suggested by Bates , their ionizing action may extend below the level of their own penetration, by the Lyman α-photons they emit. These can penetrate to about 75 km, and ionize nitric oxide. Recent
openaire   +1 more source

EISCAT studies of the auroral ionosphere conductances

Advances in Space Research, 1989
Abstract Electron density profiles measured by the EISCAT incoherent scatter radar are used to derive the Hall- and Pedersen conductances and the characteristic energy of the incoming particles during events of strong particle precipitation. A relationship is sought between the Hall- to Pedersen conductance ratio, R, and the root mean square energy ...
A. Brekke, C. Hall, T.L. Hansen
openaire   +1 more source

Thermospheric and ionospheric dynamics in the auroral region

Advances in Space Research, 2003
Abstract Behavior of the thermosphere and the ionosphere in the auroral region, especially near an auroral arc, is quite complicated. There have been a number of reports on vertical neutral winds in the auroral region, suggesting that heat sources associated with local auroral activities could cause extremely large upwelling and downwelling of the ...
H. Shinagawa, S. Oyama, S. Nozawa, S.C. Buchert, R. Fujii, M. Ishii   +5 more
openaire   +1 more source