Ionization structure of hot components in symbiotic binaries during active phases
, 2012 During active phases of symbiotic binaries, an optically thick medium in the form of a flared disk develops around their hot stars. During quiescent phases, this structure is not evident.
Carikova, Zuzana, Skopal, Augustin
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A predicted small and round heliosphere [PDF]
, 2018 The shape of the solar wind bubble within the interstellar medium, the so-called heliosphere, has been explored over six decades(1-7). As the Sun moves through the surrounding partially-ionized medium, neutral hydrogen atoms penetrate the heliosphere ...
Drake, James +3 more
core +2 more sources
Generation of the lower-thermospheric vertical wind estimated with the EISCAT KST radar at high latitudes during periods of moderate geomagnetic disturbance [PDF]
Annales Geophysicae, 2008 Lower-thermospheric winds at high latitudes during moderately-disturbed geomagnetic conditions were studied using data obtained with the European Incoherent Scatter (EISCAT) Kiruna-Sodankylä-Tromsø (KST) ultrahigh frequency (UHF) radar system on 9 ...
S. Oyama +9 more
doaj +1 more source
Two-Face(s): ionized and neutral gas winds in the local Universe [PDF]
, 2018 We present a comprehensive study of the Na I $\lambda$5890, 5895 (Na I D) resonant lines in the Sloan Digital Sky Survey (SDSS, DR7) spectroscopic sample to look for neutral gas outflows in the local galaxies.
Brusa, M. +4 more
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Formation of Neutral Disk-Like Zone Around the Active Hot Stars in Symbiotic Binaries
Open Astronomy, 2012 In this contribution we present the ionization structure in the enhanced wind from the hot star in symbiotic binaries during active phases. Rotation of the hot star leads to the compression of the outflowing material towards its equatorial plane.
Cariková Z., Skopal A.
doaj +1 more source
The role of electric field and neutral wind in the generation of polar cap sporadic E [PDF]
Annales Geophysicae, 2008 This paper investigates the roles of electric field and neutral wind in the generation of sporadic-E layers within the polar cap. Two Es layers above Svalbard, observed by the EISCAT Svalbard Radar (ESR), were chosen for investigation.
T. Nygrén, M. Voiculescu, A. T. Aikio
doaj +1 more source
Oscillations in Neutral Winds Observed by GOCE
Geophysical Research Letters, 2020 AbstractThis study explores intra‐annual oscillations (IAOs) in upper thermospheric winds using GOCE cross‐track wind measurements between 70°S and 70°N. Due to the Sun‐synchronous dawn‐dusk orbit of GOCE, the cross‐contamination between seasonality and local time variations in winds is minimal, which makes it a unique space‐based data set to extract ...
Manbharat S. Dhadly +6 more
openaire +2 more sources
Mid-Latitude Neutral Wind Responses to Sub-Auroral Polarization Streams
Annales Geophysicae, 2022 Abstract. We investigate the response of the mid-latitude thermospheric neutral winds to a sub-auroral polarisation stream (SAPS) event. Using red-line (F-region) airglow data from two Fabry-Perot interferometers (FPIs), and F-region ionospheric flow velocities from four Super Dual Auroral Radar Network (SuperDARN) radars, the drivers behind changes ...
Daniel D. Billett +8 more
openaire +4 more sources
Diurnal cycle RANS simulations applied to wind resource assessment [PDF]
, 2019 Microscale computational fluid dynamics (CFD) models can be used for wind resource assessment on complex terrains. These models generally assume neutral atmospheric stratification, an assumption that can lead to inaccurate modeling results and to large ...
Apsley +26 more
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Variations of the 630.0 nm airglow emission with meridional neutral wind and neutral temperature around midnight [PDF]
Annales Geophysicae, 2018 The ISUAL payload onboard the FORMOSAT-2 satellite has often observed airglow bright spots around midnight at equatorial latitudes. Such features had been suggested as the signature of the thermospheric midnight temperature maximum (MTM) effect, which
C.-Y. Chiang +3 more
doaj +1 more source