Results 161 to 170 of about 2,184,733 (309)

Cluster four spacecraft measurements of small traveling compression regions in the near‐tail [PDF]

, 2003
J. A. Slavin, C. J. Owen, M. W. Dunlop, E. Borälv, M. B. Moldwin, D. G. Sibeck, E. I. Tanskanen, M. L. Goldstein, A. N. Fazakerley, A. Balogh, E. Lucek, Ingo Richter, H. Rème, J. M. Bosqued   +13 more
openalex   +1 more source

Nonlinear Proton Dynamics in the Formation of Rising‐Tone EMIC Wave Subpackets

Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract Electromagnetic ion cyclotron (EMIC) waves are commonly observed in the Earth's magnetosphere and play a significant role in regulating relativistic electron fluxes. The waveform of EMIC waves comprises amplitude‐modulated wave packets, known as “subpackets.” Despite their prevalence, the underlying physics and associated particle dynamics for
Huayue Chen, Xueyi Wang, Yu Lin, Hong Zhao, Chih‐Ping Wang, Xinmin Li, Shujie Gu, Yoshiharu Omura, Lunjin Chen, Xiaolei Li, Yi‐Kai Hsieh   +10 more
wiley   +1 more source

Analysis of Field-Aligned Currents in the High-Altitude Nightside Auroral Region: Cluster Observation

Journal of Astronomy and Space Sciences, 2019
In this paper we present analysis of current density when the Cluster spacecraft pass the nightside auroral region at about 4-5 RE from the center of Earth. The analysis is made when the inter-spacecraft separation is within 200 km, which allows all four
Youra Shin, Ensang Lee, Jae-Jin Lee
doaj   +1 more source

Microbiologically influenced corrosion in aluminium alloys and premier techniques for comprehensive identification and characterization across diverse metal types

Journal of Chemical Technology &Biotechnology, Volume 100, Issue 6, Page 1143-1158, June 2025.
Abstract Microbiologically influenced corrosion (MIC) is acknowledged as a significant type of corrosion due to its extensive impact on metal/alloy surfaces. As MIC accounts for 20% of all corrosion instances, it is a critical factor causing service failure of engineering materials such as steel and aluminium alloy.
Brinda, M S Divyashree, Suma A Rao, Padmalatha Rao, Lavanya Mulky   +4 more
wiley   +1 more source

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

International Journal of Satellite Communications and Networking, Volume 43, Issue 3, Page 164-192, May/June 2025.
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

Numerical Algorithm for Detecting Ion Diffusion Regions in the Geomagnetic Tail with Applications to MMS Tail Season May 1 -- September 30, 2017

, 2019
We present a numerical algorithm aimed at identifying ion diffusion regions (IDRs) in the geomagnetic tail, and test its applicability. We use 5 criteria applied in three stages.
Farrugia, C. J., Rogers, A. J., Torbert, R. B.   +2 more
core   +1 more source

Laser Terminals on CubeSats: Developments for Telecommunications and Quantum Links

International Journal of Satellite Communications and Networking, Volume 43, Issue 3, Page 133-146, May/June 2025.
ABSTRACT Satellite‐based laser communication is an emerging technology that is finding its way from research to industry. Compared to radio frequency (RF) systems, it has a more efficient size, weight, and power budget and, furthermore, is license free.
Christian Roubal, Till Dolejsky, Benjamin Rödiger, Fabian Rein, Jorge Rosano Nonay, René Rüddenklau, Christos Papadopoulos, Christopher Schmidt, Florian Moll   +8 more
wiley   +1 more source

A new X-ray outburst in the globular cluster NGC 6440: SAX J1748.9-2021 [PDF]

arXiv, 1999
For the second time in 27 years a bright transient X-ray source has been detected coincident with the globular cluster NGC 6440. It was found to be active in August, 1998, with the Wide Field Camera and the narrow field instruments on the BeppoSAX spacecraft, and with the All-Sky Monitor and the Proportional Counter Array on the RossiXTE spacecraft ...
arxiv  

Pattern transition in spacecraft formation flying via the artificial potential field method and bifurcation theory [PDF]

, 2008
In recent years many new and exciting space concepts have developed around spacecraft formation flying. This form of distributed system has the advantages of being extremely flexible and robust.
Bennet, Derek J., McInnes, C.R.
core  

Update on the German and Australasian Optical Ground Station Networks

International Journal of Satellite Communications and Networking, Volume 43, Issue 3, Page 147-163, May/June 2025.
ABSTRACT Networks of ground stations designed to transmit and receive at visible and infra‐red wavelengths through the atmosphere offer an opportunity to provide on‐demand, high‐bandwidth, secure communications with spacecraft in Earth orbit and beyond. This work describes the operation and activities of current free space optical communications (FSOC)
Nicholas J. Rattenbury, Joseph Ashby, Francis Bennet, Marcus Birch, John E. Cater, Kate Ferguson, Dirk Giggenbach, Ken Grant, Andreas Knopp, Marcus T. Knopp, Ed Kruzins, Andrew Lambert, Kerry Mudge, Catherine Qualtrough, Samuele Raffa, Jonas Rittershofer, Mikhael T. Sayat, Sascha Schediwy, Robert T. Schwarz, Matthew Sellars, Oliver Thearle, Tony Travouillon, Kevin Walker, Shane Walsh, Stephen Weddell   +24 more
wiley   +1 more source