Results 101 to 110 of about 2,155,828 (298)

In situ evidence for the structure of the magnetic null in a 3D reconnection event in the Earth's magnetotail [PDF]

, 2006
Magnetic reconnection is one of the most important processes in astrophysical, space and laboratory plasmas. Identifying the structure around the point at which the magnetic field lines break and subsequently reform, known as the magnetic null point, is ...
A Balogh, A. Balogh, A. Korth, ATY Lui, B Filippov, BUO Sonnerup, C Garth, C. J. Xiao, C. P. Escoubet, CE Parnell, CJ Xiao, CP Escoubet, DI Pontin, DS Cai, EN Parker, ER Priest, ER Priest, FS Mozer, G Aulanier, G Chanteur, H Reme, H Zhao, H. Reme, H. Zhao, HE Petschek, HU Frey, J Birn, J Buchner, J Wang, J. X. Wang, JM Greene, JM Greene, JM Greene, JW Dungey, JW Dungey, JW Dungey, K Galsgaard, K Schindler, K. H. Glassmeier, KK Khurana, L Fletcher, M Øieroset, M. G. Kivelson, Q. G. Zong, RG Giovanelli, S Hu, S. Y. Fu, SWH Cowley, TD Phan, VI Arnold, WX Ding, X. G. Wang, XG Wang, XG Wang, XG Wang, XH Deng, Y-T Lau, Y-T Lau, Z. W. Ma, Z. X. Liu, Z. Y. Pu   +60 more
core   +2 more sources

Two‐dimensional correlation functions for density and magnetic field fluctuations in magnetosheath turbulence measured by the Cluster spacecraft

, 2011
[1] Knowledge of multidimensional correlation functions is crucial for understanding the anisotropy of turbulence. The two-dimensional (2-D) spatial correlation functions (SCFs) obtained in previous studies of space plasma turbulence were restricted to ...
Jianan He, E. Marsch, C. Tu, Q. Zong, S. Yao, H. Tian   +5 more
semanticscholar   +1 more source

An exploration of market mechanisms to the wicked problem of space debris 太空垃圾棘手问题的市场机制探究 Una exploración de los mecanismos del mercado para resolver el complejo problema de los desechos espaciales

Risk, Hazards &Crisis in Public Policy, EarlyView.
Abstract Near‐earth orbits are becoming congested because of a rapid growth in the number of satellites and space debris, which presents a real threat to the sustainable use of space and the safety of the Earth. Despite space scientists and public policymakers having been actively seeking solutions for decades, solving the problem has been put off ...
Anna Ya Ni, Maureen Mayala, Faith Victoria Ni   +2 more
wiley   +1 more source

Application Status and Prospect of Digital Twin for On-Orbit Spacecraft

IEEE Access, 2021
With cloud computing, big data, artificial intelligence and other new information technologies going into space, the era of space intelligence is coming. The spacecraft is facing more frequent and multi-task tests in an unprecedented complex environment,
Wenqiang Yang, Yu Zheng, Shaoyang Li
doaj   +1 more source

Micro-Scanning Laser Range Finders and Position-Attitude Determination for Formation Flight [PDF]

, 1999
There are several space missions which require a cluster of micro spacecraft with small area of several kilometer. We propose an asteroid mission by means of several micro spacecraft in formation flight.
Goto, Hiroshi, Hashimoto, Tatsuaki, Kasamura, Kenji, Saito, Hirobumi   +3 more
core   +1 more source

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

Locations of Auroral Kilometric Radiation Bursts Inferred From Multi-Spacecraft Wideband Cluster VLBI Observations i: Description of Technique and Initial Results

, 2003
The Cluster Wideband Data instrument has been used to determine the locations of auroral kilometric radiation (AKR) using very long baseline interferometry.
Alexander, Alexander, Alexander, Barton, Burns, Ergun, Feldstein, Frank, Gaelzer, Gaelzer, Gallagher, Gallagher, Gurnett, Gurnett, Huff, Kaiser, Kaiser, Kurth, Louarn, R. L. Mutel, Schreiber, Wu   +21 more
core   +1 more source

Statistically determined dispersion relations of magnetic field fluctuations in the terrestrial foreshock [PDF]

, 2016
We obtain dispersion relations of magnetic field fluctuations for two crossings of the terrestrial foreshock by Cluster spacecraft. These crossings cover plasma conditions which differ significantly in their plasma $\beta$ but not in the properties of the encountered ion population, both showing shell-like distribution function.
arxiv   +1 more source

A magnetic null geometry reconstructed from Cluster spacecraft observations: A MAGNETIC NULL GEOMETRY

, 2008
[1] This paper reports for the first time the identification of a magnetic structure around a magnetic null in a magnetic reconnection region in the magnetotail.
Jianan He, Chuanyi Tu, Hui Tian, C. J. Xiao, X. Wang, Zuyin Pu, Zhiwei Ma, M. Dunlop, Hujia Zhao, Guangqing Zhou, J. Wang, S. Fu, Z. X. Liu, Q. Zong, K. Glassmeier, H. Rème, I. Dandouras, C. Escoubet   +17 more
semanticscholar   +1 more source

Assessment of Practical Satellite Quantum Key Distribution Architectures for Current and Near‐Future Missions

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Quantum key distribution (QKD) allows the generation of cryptographic keys beyond the computational hardness paradigm and is befitting for secure data transmission requiring long‐term security. The communication distance of fiber‐based QKD, however, is limited to a few hundred kilometers due to the exponential scaling of signal attenuation ...
Davide Orsucci, Philipp Kleinpaß, Jaspar Meister, Innocenzo De Marco, Stefanie Häusler, Thomas Strang, Nino Walenta, Florian Moll   +7 more
wiley   +1 more source