Results 81 to 90 of about 30,979 (263)

Data-driven Uncertainty Quantification of the Wave Telescope Technique: General Equations and Demonstration Using HelioSwarm

The Astrophysical Journal Supplement Series, 2023
The upcoming NASA mission HelioSwarm will use nine spacecraft to make the first simultaneous multipoint measurements of space plasmas spanning multiple scales.
T. Broeren, K. G. Klein
doaj   +1 more source

Predicting Performance of Hall Effect Ion Source Using Machine Learning

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This study introduces HallNN, a machine learning tool for predicting Hall effect ion source performance using a neural network ensemble trained on data generated from numerical simulations. HallNN provides faster and more accurate predictions than numerical methods and traditional scaling laws, making it valuable for designing and optimizing Hall ...
Jaehong Park, Guentae Doh, Dongho Lee, Youngho Kim, Changmin Shin, Su‐Jin Shin, Young‐Chul Ghim, Sanghoo Park, Wonho Choe   +8 more
wiley   +1 more source

Multi-Spacecraft Measurement of Turbulence within a Magnetic Reconnection Jet [PDF]

, 2015
The relationship between magnetic reconnection and plasma turbulence is investigated using multipoint in-situ measurements from the Cluster spacecraft within a high-speed reconnection jet in the terrestrial magnetotail.
Chapman, S. C., Hnat, B., Khotyaintsev, Yu. V., Kiyani, K. H., Matthaeus, W. H., Osman, K. T.   +5 more
core   +2 more sources

Observations of the cusp region under northward IMF [PDF]

Annales Geophysicae, 2001
We present a comparative study of the cusp region using the EISCAT Svalbard Radars (ESR) and the Cluster spacecraft. We focus in this paper on 2 February 2001, over the time period from 07:30 UT to 12:00 UT when the oblique ESR antenna pointing ...
F. Pitout, F. Pitout, J.-M. Bosqued, D. Alcaydé, W. F. Denig, H. Rème   +5 more
doaj   +1 more source

Electrically Conductive Polyimide/Graphene Nanocomposites for Advanced Space Applications

Macromolecular Symposia, EarlyView.
ABSTRACT Aromatic polyimides (PI) with high resistance to radiation combined with functional graphene‐based fillers are promising materials for a wide range of space applications, such as those involving sensors, antibacterial coatings, and external spacecraft or satellite components.
Francesca Blondelli, Martina Campanella, Elisa Toto, Susanna Laurenzi, Maria Gabriella Santonicola   +4 more
wiley   +1 more source

Analysis of plasmaspheric plumes: CLUSTER and IMAGE observations [PDF]

Annales Geophysicae, 2006
Plasmaspheric plumes have been routinely observed by CLUSTER and IMAGE. The CLUSTER mission provides high time resolution four-point measurements of the plasmasphere near perigee.
F. Darrouzet, J. De Keyser, P. M. E. Décréau, D. L. Gallagher, V. Pierrard, J. F. Lemaire, J. F. Lemaire, B. R. Sandel, I. Dandouras, H. Matsui, M. Dunlop, J. Cabrera, A. Masson, P. Canu, J. G. Trotignon, J. L. Rauch, M. André   +16 more
doaj   +1 more source

The Effect of Tip Design on Technological Performance During the Exploration of Earth, Lunar, and Martian Soil Environments

Journal of Field Robotics, EarlyView.
ABSTRACT This paper investigates the penetration performance of soil‐burrowing probes with different tip designs during shallow‐depth penetration in various media, including terrestrial soils (Hostun sand) and well‐characterized planetary soil simulants (LHS‐1 Lunar regolith simulant and MGS‐1 Martian regolith simulant).
Serena Rosa Maria Pirrone, Emanuela Del Dottore, Gunter Just, Barbara Mazzolai, Luc Sibille   +4 more
wiley   +1 more source

Whistler mode waves upstream of Saturn [PDF]

, 2016
Whistler-mode waves are generated within and can propagate upstream of collisionless shocks. They are known to play a role in electron thermodynamics/acceleration and, under certain conditions, are markedly observed as wave trains preceding the shock ...
Dougherty, Michele K, Gurnett, Donald A, Halekas, Jasper S, Kurth, William S, Sulaiman, Ali H, Yates, Japheth N   +5 more
core   +3 more sources

Origin of the turbulent spectra in the high-altitude cusp: Cluster spacecraft observations [PDF]

Annales Geophysicae, 2006
Abstract. High-resolution magnetic field data from Cluster Flux Gate Magnetometer (FGM) and the Spatio-Temporal Analysis of Field Fluctuations (STAFF) instruments are used to study turbulent magnetic field fluctuations during the high-altitude cusp crossing on 17 March 2001.
Nykyri, K., Grison, B., Cargill, P.J., Lavraud, B., Lucek, E., Dandouras, Iannis, Balogh, A., Cornilleau-Wehrlin, Nicole, Rème, Henri   +8 more
openaire   +6 more sources

Launch support: Managing complementor bottlenecks in the disruptive innovation of small satellites

Strategic Management Journal, EarlyView.
Abstract Research Summary Through both qualitative and quantitative analyses of large‐rocket providers' support for small‐satellite manufacturers before the emergence of small rockets, we examine how disruptors to an incumbent ecosystem gain support from complementors of the incumbent technology.
Yue Song, Yue Maggie Zhou, Xiaoping Zhao
wiley   +1 more source