Results 111 to 120 of about 2,155,828 (298)

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

Reformation of an oblique shock observed by Cluster [PDF]

Journal of Geophysical Research (Space Physics) 114, 11107, 2009, 2010
On 16 March 2005, the Cluster spacecraft crossed a shock almost at the transition between the quasi-perpendicular and quasi-parallel regimes ($\theta_{Bn}=46^{\circ}$) preceded by an upstream low-frequency ($\sim$ 0.02 Hz in the spacecraft frame) wavetrain observed for more than 10 mn. The wave semi-cycle nearest to the shock was found to grow in time,
arxiv   +1 more source

Chorus source properties that produce time shifts and frequency range differences observed on different Cluster spacecraft

, 2007
[1] We present an explanation of frequency range differences and time shifts between corresponding chorus elements of whistler mode chorus which have been recently observed on multiple Cluster spacecraft.
J. Chum, O. Santolík, A. Breneman, C. Kletzing, D. Gurnett, J. Pickett   +5 more
semanticscholar   +1 more source

Laser Terminals on CubeSats: Developments for Telecommunications and Quantum Links

International Journal of Satellite Communications and Networking, EarlyView.
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

Update on the German and Australasian Optical Ground Station Networks

International Journal of Satellite Communications and Networking, EarlyView.
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

Cluster as current sheet surveyor in the magnetotail [PDF]

Annales Geophysicae, 2013
A novel analysis technique is presented to estimate the current sheet thickness unambiguously and directly, without associating time series data with spatial structure.
Y. Narita, R. Nakamura, W. Baumjohann
doaj   +1 more source

Space Economy and Sustainability: A Systematic Review

Sustainable Development, EarlyView.
ABSTRACT The space economy is booming thanks to the increasing investment of government agencies, private companies, and venture capitalists. From the beginning of the New Space era, the array of actors involved in the development of technologies for extra‐terrestrial activities has increased, as well as the downstream applications that foster ...
Marianna Valente, Federico Caviggioli, Lara Agostini   +2 more
wiley   +1 more source

Coronal mass ejections from the same active region cluster: Two different perspectives [PDF]

, 2015
The cluster formed by active regions (ARs) NOAA 11121 and 11123, approximately located on the solar central meridian on 11 November 2010, is of great scientific interest.
Cremades, H., Crescitelli, A. M., Mandrini, C. H., Schmieder, B.   +3 more
core   +3 more sources

PAseos Simulates the Environment for Operating multiple Spacecraft [PDF]

arXiv, 2023
The next generation of spacecraft is anticipated to enable various new applications involving onboard processing, machine learning and decentralised operational scenarios. Even though many of these have been previously proposed and evaluated, the operational constraints of real mission scenarios are often either not considered or only rudimentary. Here,
arxiv  

Defending knowledge abroad

Strategic Management Journal, EarlyView.
Abstract Research Summary This article analyzes how innovation country‐of‐origin impacts the decisions of multinational corporations (MNCs) to defend their patents against infringement in foreign countries. We argue that MNCs have stronger incentives to defend their locally generated innovations (in foreign countries) than their home‐ or third‐country ...
Heather Berry, Róisín Donnelly
wiley   +1 more source