Results 51 to 60 of about 9,625 (210)

GALEX Observations of Diffuse UV Radiation at High Spatial Resolution from the Sandage Nebulosity

, 2008
Using the GALEX ultraviolet imagers we have observed a region of nebulosity first identified as starlight scattered by interstellar dust by Sandage (1976). Apart from airglow and zodiacal emission, we have found a diffuse UV background of between 500 and
Abhay Karnataki, Boffi, Jayant Murthy, Luciana Bianchi, Martin, Morrissey, Murthy, Murthy, Murthy, N. V. Sujatha, Richard Conn Henry, Ryu, Sujatha, Sujatha   +13 more
core   +1 more source

Enhancing Low‐Latitude Ionospheric Irregularity Prediction With Generalized Linear Models

Space Weather, Volume 24, Issue 3, March 2026.
Abstract The ionosphere poses challenges for accurate forecasting due to its complexity and variability. Irregularities in the lower ionosphere are influenced by local time, season, geographic location, solar activity and space weather, complicating precise predictions.
Alysson Brhian, Marco A. Ridenti, Francisco Azpilicueta, Mauricio Gende, Marisa Roberto   +4 more
wiley   +1 more source

Strong Polar Ionospheric Electron Density Depletion Under Prolonged Northward IMF Bz Condition

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract Previous studies have primarily focused on high‐latitude ionospheric‐thermospheric (I‐T) variabilities under southward interplanetary magnetic field (IMF) conditions, while rare studies have investigated the I‐T responses to due northward Bz (NBz), especially in the presence of strong IMF By conditions.
Tianyu Cao, Yifan Lu, Jing Liu, Shuhan Li   +3 more
wiley   +1 more source

Spatial sampling of the thermospheric vertical wind field at auroral latitudes [PDF]

, 2011
Results are presented from two nights of bistatic Doppler measurements of neutral thermospheric winds using Fabry!Perot spectrometers at Mawson and Davis stations in Antarctica.
Anderson, Aruliah, Aruliah, Aruliah, Biondi, Burnside, C. Anderson, Chun, Conde, Conde, Conde, Conde, Conde, Conde, Cooper, Greet, Greet, Guo, Hunsucker, Innis, Innis, Innis, Ishii, Ishii, Ishii, Jones, Kosch, M. Conde, M. J. Kosch, P. Dyson, Picone, Price, Rees, Rishbeth, Sipler, Smith, Smith, Smith, Smith, Spencer, Spencer, T. Davies, Wardill, Østgaard   +43 more
core   +1 more source

Study of the Mid‐Latitude Airglow Responses to Geomagnetic Storms Based on Long‐Term Observations in Japan With the TIMED Satellite and Ionosondes

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Variations in nighttime airglow at mid‐latitudes during geomagnetic disturbances reflect the propagation of atmospheric and plasma disturbances from polar heating as well as local chemical processes. However, their detailed mechanisms remain unclear.
Y. Hotta, K. Shiokawa, Y. Otsuka, M. Nishioka, J. Yue   +4 more
wiley   +1 more source

First Coincident Radar and Optical Observations of a Meteor Radio Afterglow

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract It has been hypothesized that Meteor Radio Afterglows (MRAs) occur due to resonant transition radiation (RTR) where suprathermal electrons emit as they pass through electron density inhomogeneities in a turbulent plasma. Meteor trails are thought to produce suprathermal electrons through anion oxidation, which can be identified through meteor ...
K. S. Obenberger, J. L. Chau, J. Vierinen, D. Vida, L. E. Cordonnier, Z. Balint, M. Clahsen, E. Dao, J. Dowell, J. M. Holmes, R. F. Kelly, D. Kastinen, N. Pfeffer, K. Robinson, G. B. Taylor, J. M. Urco   +15 more
wiley   +1 more source

Daily Variability in the Terrestrial UV Airglow

Atmosphere, 2020
New capability for observing conditions in the upper atmosphere comes with the implementation of global ultraviolet (UV) imaging from geosynchronous orbit. Observed by the NASA GOLD mission, the emissions of atomic oxygen (OI) and molecular nitrogen (N2)
Thomas J. Immel, Richard W. Eastes, William E. McClintock, Steven B. Mende, Harald U. Frey, Colin Triplett, Scott L. England   +6 more
doaj   +1 more source

Application of tomographic inversion in studying airglow in the mesopause region [PDF]

Annales Geophysicae, 1998
It is pointed out that observations of periodic nightglow structures give excellent information on atmospheric gravity waves in the mesosphere and lower thermosphere.
T. Nygrén, M. J. Taylor, M. S. Lehtinen, M. Markkanen   +3 more
doaj   +1 more source

The night-sky at the Calar Alto Observatory [PDF]

, 2007
We present a characterization of the main properties of the night-sky at the Calar Alto observatory for the time period between 2004 and 2007. We use optical spectrophotometric data, photometric calibrated images taken in moonless observing periods ...
Burki G., D. Pérez‐Ramírez, Holmes R. W., Ingham M. F., J. Aceituno, J. Alves, Lane M., Leinert C., Pedani M., Rufener F., S. F. Sánchez, Smith F. G., Treanor P. J., Tug H., U. Thiele, Walker A., Walker A., Walker M. F.   +17 more
core   +3 more sources

Thermospheric Energy and Heating Due To Upward Propagating and in Situ Generated Tides During Solar Cycle 24

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract We investigate vertical and horizontal energy transport and associated heating in the thermosphere due to both upward propagating and in situ generated migrating and nonmigrating diurnal and semidiurnal tides over the solar cycle 24 (2009–2019).
Mukta Neogi, Jens Oberheide, Xian Lu
wiley   +1 more source