Results 81 to 90 of about 2,155,828 (298)
Frontiers in Astronomy and Space Sciences, 2022 During 2018 November 06, 11:30—18:00 UT, the MMS constellation, the Cluster set of spacecraft, and the Geotail spacecraft were all situated near the dusk flank magnetopause.
Steven M. Petrinec +3 more
doaj +1 more source
Cluster observations of the midaltitude cusp under strong northward interplanetary magnetic field [PDF]
, 2008 We report on a multispacecraft cusp observation lasting more than 100 min. We determine the cusp boundary motion and reveal the effect on the cusp size of the interplanetary magnetic field (IMF) changing from southward to northward.
Bogdanova, Y. V. +5 more
core +1 more source
Analysis of three-spacecraft data using planar reciprocal vectors: methodological framework and spatial gradient estimation [PDF]
Annales Geophysicae, 2009 In the context of ESA's Cluster mission, four-point array techniques are widely used to analyze space plasma phenomena such as shocks and discontinuities, waves and turbulence, and spatial gradients.
J. Vogt, A. Albert, O. Marghitu
doaj +1 more source
On the estimation of the current density in space plasmas: multi versus single-point techniques [PDF]
, 2017 Thanks to multi-spacecraft mission, it has recently been possible to directly estimate the current density in space plasmas, by using magnetic field time series from four satellites flying in a quasi perfect tetrahedron configuration. The technique developed, commonly called 'curlometer' permits a good estimation of the current density when the ...
arxiv +1 more source
, 2013 Equatorial noise (EN) emissions are electromagnetic waves at frequencies between the proton cyclotron frequency and the lower hybrid frequency routinely observed within a few degrees of the geomagnetic equator at radial distances from about 2 to 6 RE ...
F. Němec +4 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong +11 more
wiley +1 more source
Temporal and spatial evolution of discrete auroral arcs as seen by Cluster [PDF]
Annales Geophysicae, 2005 Two event studies are presented in this paper where intense convergent electric fields, with mapped intensities up to 1350 mV/m, are measured in the auroral upward current region by the Cluster spacecraft, at altitudes between 3 and 5 Earth radii ...
S. Figueiredo +9 more
doaj +1 more source
, 1974 A star scanner on a spin stabilized spacecraft is described which includes a reticle with a pair of slits having different separations as a function of the spacecraft vertical plane, to form a V slit.
Gutshall, R. L. +2 more
core +1 more source
Can Planet Nine Be Detected Gravitationally by a Sub-Relativistic Spacecraft? [PDF]
, 2020 Planet 9 was proposed as an explanation for the clustering of orbits for some trans-Neuptunian objects. Recently, the use of a sub-relativistic spacecraft was proposed to indirectly probe Planet 9's gravitational influence. Here we study the effects of the drag and electromagnetic forces exerted on a sub-relativistic spacecraft by the interstellar ...
arxiv +1 more source
, 2012 [1] A sunlit conductive spacecraft, immersed in tenuous plasma, will attain a positive potential relative to the ambient plasma. This potential is primarily governed by solar irradiation, which causes escape of photoelectrons from the surface of the ...
B. Lybekk +7 more
semanticscholar +1 more source