Results 131 to 140 of about 30,979 (263)

Relevance of Murchison Widefield Array Interplanetary Scintillation Observations to Heliospheric Transient Catalogs

Space Weather, Volume 23, Issue 12, December 2025.
Abstract We have conducted a comprehensive comparison of interplanetary scintillation (IPS) observations taken by the Murchison Widefield Array (MWA) with several heliospheric transient event catalogs, over a time period of 7 months during solar minimum.
A. Waszewski, J. S. Morgan, M. C. M. Cheung, R. Ekers, E. Samara, S. Majumdar, R. Chhetri, N. D. R. Bhat, M. Johnston‐Hollitt   +8 more
wiley   +1 more source

Quantifying the Impact of Solar Irradiance Uncertainty on Thermosphere‐Ionosphere Variability Using Ensemble Forecasts

Space Weather, Volume 23, Issue 12, December 2025.
Abstract This study investigates the sensitivity of the thermosphere and ionosphere to variations in solar spectral irradiance. Using data from the SDO and SORCE missions collected between 2010 and 2018, we quantified the variability and uncertainty of solar spectral irradiance across wavelengths from 0.1 to 190 nm and developed a data‐driven method to
C.‐T. Hsu, N. M. Pedatella
wiley   +1 more source

Oxygen and hydrogen ion abundance in the near-Earth magnetosphere: Statistical results on the response to the geomagnetic and solar wind activity conditions

, 2012
The composition of ions plays a crucial role for the fundamental plasma properties in the terrestrial magnetosphere. We investigate the oxygen-to-hydrogen ratio in the near-Earth magnetosphere from -10 RE274 keV O+ ion intensities, relative to the ...
Daly, Patrick W., Dandouras, Iannis, Fränz, Markus, Grigorenko, Elena E., Haaland, Stein E., Kistler, Lynn, Kronberg, Elena A.   +6 more
core   +1 more source

Global Validation of the Data‐Assimilative VERB‐3D Code for the Radiation Belts

Space Weather, Volume 23, Issue 12, December 2025.
Abstract Electrons within Earth's radiation belts exhibit large variability in space and time during geomagnetic storms, which could potentially damage satellites and harm astronauts in space. Physics‐based models describe the evolution of energetic electrons in the radiation belts, but they may suffer from uncertainties and errors, particularly in the
Marina García Peñaranda, Yuri Y. Shprits, Alexander Y. Drozdov, Angélica M. Castillo Tibocha, Bernhard Haas, Mátyás Szabó‐Roberts, Dedong Wang, Sebastián Cervantes, Yoshizumi Miyoshi, Nana Higashio, Takefumi Mitani, Takeshi Takashima, Iku Shinohara   +12 more
wiley   +1 more source

Preliminary space mission design under uncertainty [PDF]

, 2008
This paper proposes a way to model uncertainties and to introduce them explicitly in the design process of a preliminary space mission. Traditionally, a system margin approach is used in order to take them into account.
Croisard, N., Kemble, S., Radice, G., Vasile, M.   +3 more
core  

Correction to “Electron density estimations derived from spacecraft potential measurements on Cluster in tenuous plasma regions” [PDF]

, 2008
A. Pedersen, B. Lybekk, M. André, A. I. Eriksson, A. Masson, F. S. Mozer, Peter Lindqvist, P. M. E. Décréau, I. Dandouras, J. A. Sauvaud, A. N. Fazakerley, M. G. G. T. Taylor, G. Paschmann, K. Svenes, K. Torkar, E. C. Whipple   +15 more
openalex   +1 more source

Premature Reentry of the Binar CubeSats Due To Underestimation of Solar and Geomagnetic Activities and Its Implication for Importance of Medium‐ and Long‐Term Space Weather Forecasts

Space Weather, Volume 23, Issue 12, December 2025.
Abstract The rapid development of low‐Earth orbit (LEO) satellites brings increased attention to spacecraft collisions, space debris, orbital decay, and satellite reentry. Neutral density and associated drag force on the satellite orbits elevate space risks, significantly determined by space weather disturbances, particularly geomagnetic storms.
Xin Wang, Ronglan Wang, Kunpeng Wang, Zhitao Yang, Tingling Ren, Jifeng Cao, Ming Li, Siqing Liu, Bingxian Luo, Chi Wang   +9 more
wiley   +1 more source

Global Occurrence of Kelvin‐Helmholtz Vortices at Mars

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract We analyzed six Kelvin‐Helmholtz (K‐H) vortex events from Mars Atmosphere and Volatile EvolutioN (MAVEN) measurements. We found that fully developed vortices can occur at Mars' equatorial flanks and in the southern hemisphere, while they were previously observed only in the northern hemisphere.
Ze‐Wen Koh, Gangkai Poh, Christopher M. Fowler, Kathleen Gwen Hanley, Xuanye Ma, Jacob R. Gruesbeck, Dona Chathuni P. Kuruppuaratchi, Weijie Sun, Gina A. DiBraccio, Jared Randolph Espley   +9 more
wiley   +1 more source

Wave Heating of Magnetotail Current Sheet Electrons at Mars

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract The Martian magnetotail current sheet serves as a critical pathway for ionospheric ion escape. Contrary to the conventional view that external magnetic pressure is balanced mainly by internal ion thermal pressure, we present novel observations from the Mars Atmosphere and Volatile Evolution spacecraft of an electron‐dominated pressure balance ...
Liang Yu, Zhenpeng Su, Sanwei Cheng, Zhiyong Wu, Zewen Chen, Zhaojin Rong, Yuming Wang   +6 more
wiley   +1 more source

Activities of the Space Advanced Research Team at the University of Glasgow [PDF]

, 2008
A wide range of technologies and methodologies for space systems engineering are currently being developed at the University of Glasgow. Much of the work is centred on mission analysis and trajectory optimisation, complemented by research activities in ...
Radice, G., Vasile, M.
core