Results 41 to 50 of about 376,247 (350)

Starburst Driven Galactic Superbubbles Radiating to 10 K [PDF]

open access: yes, 2016
Our three-dimensional hydro-dynamical simulations of starbursts examine the formation of superbubbles over a range of driving luminosities and mass loadings that determine superbubble growth and wind velocity.
Cecil, Gerald   +2 more
core   +3 more sources

Supersonic neutral winds and neutral streams in the thermosphere‐ionosphere‐plasmasphere system [PDF]

open access: yesRadio Science, 2009
Model studies were conducted to determine the conditions that might give rise to supersonic neutral winds in the high‐latitude thermosphere and that can produce neutral streams in the polar wind and plasmasphere. For the supersonic neutral wind study, we used a time‐dependent, three‐dimensional, global thermosphere‐ionosphere model.
L. C. Gardner, R. W. Schunk
openaire   +1 more source

A preliminary comparison of Na lidar and meteor radar zonal winds during geomagnetic quiet and disturbed conditions

open access: yes, 2018
We investigate the possibility that sufficiently large electric fields and/or ionization during geomagnetic disturbed conditions may invalidate the assumptions applied in the retrieval of neutral horizontal winds from meteor and/or lidar measurements. As
Kumar, G. Kishore   +2 more
core   +1 more source

3D model of hydrogen atmospheric escape from HD209458b and HD189733b: radiative blow-out and stellar wind interactions [PDF]

open access: yes, 2013
Transit observations in Ly-alpha of HD209458b and HD189733b revealed signatures of neutral hydrogen escaping the planets. We present a 3D particle model of the dynamics of the escaping atoms, and calculate theoretical Ly-alpha absorption line profiles ...
Bourrier, Vincent   +1 more
core   +1 more source

Sensitivity studies of the E region neutral response to the postmidnight diffuse aurora [PDF]

open access: yesAnnales Geophysicae, 2006
Measurements of the neutral thermosphere within the postmidnight substorm recovery phase diffuse aurora show very large horizontal winds, and strong vertical structure.
H. F. Parish, L. R. Lyons
doaj   +1 more source

Influence of Atmospheric Stability on Wind Turbine Energy Production: A Case Study of the Coastal Region of Yucatan

open access: yesEnergies, 2023
Wind energy production mainly depends on atmospheric conditions. The atmospheric stability can be described through different parameters, such as wind shear, turbulence intensity, bulk Richardson number, and the Monin–Obukhov length.
Christy Pérez   +4 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Neutral Solar Wind Generated by Lunar Exospheric Dust at the Terminator

open access: yes, 2007
We calculate the flux of neutral solar wind observed on the lunar surface at the terminator due to solar wind protons penetrating exospheric dust grains with (1) radii greater than 0.1 microns and (2) radii greater than 0.01 microns.
Abramowitz   +53 more
core   +1 more source

Multi‐Instrument Observations of Ion‐Neutral Coupling in the Dayside Cusp

open access: yesGeophysical Research Letters, 2020
Using data from the Scanning Doppler Imager, the Super Dual Auroral Radar Network, the EISCAT Svalbard Radar, and an auroral all‐sky imager, we examine an instance of F region neutral winds which have been influenced by the presence of poleward moving ...
D. D. Billett   +7 more
doaj   +1 more source

Numerical modeling of solar wind influences on the dynamics of the high-latitude upper atmosphere [PDF]

open access: yesAdvances in Radio Science, 2012
Neutral thermospheric wind patterns at high latitudes obtained from cross-track acceleration measurements of the CHAMP satellite above both polar regions are used to deduce statistical neutral wind vorticity distributions and were analyzed in their ...
M. Förster   +3 more
doaj   +1 more source

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