Evidence for Near-Equatorial Deposition by Energetic Electrons in the Ionospheric F-layerNear-equatorial great enhancements of the quasi-trapped >30 keV electrons at low-altitudes are studied during strong geomagnetic storms. We have found that the transient phenomenon often began at the…A. V. Suvorova, A. V. Dmitriev, L. -C. Tsai·Jan 11, 2013SaveLearn
TEC enhancement due to energetic electrons above Taiwan and the West PacificThe energetic electrons of the inner radiation belt during a geomagnetic disturbance can penetrate in the forbidden range of drift shells located at the heights of the topside equatorial ionosphere…A. V. Suvorova, L. -C. Tsai, A. V. Dmitriev·Jan 11, 2013SaveLearn
Handling vacuum regions in a hybrid plasma solverIn a hybrid plasma solver (particle ions, fluid mass-less electrons) regions of vacuum, or very low charge density, can cause problems since the evaluation of the electric field involves division by…M. Holmstrom·Jan 2, 2013SaveLearn
Modeling the Lunar plasma wakeBodies that lack a significant atmosphere and internal magnetic fields, such as the Moon and asteroids, can to a first approximation be considered passive absorbers of the solar wind. The solar wind…M. Holmstrom, B. Eliasson·Jan 2, 2013SaveLearn
The Dispersion Relations and Instability Thresholds of Oblique Plasma Modes in the Presence of an Ion BeamAn ion beam can destabilize Alfvén/ion-cyclotron waves and magnetosonic/whistler waves if the beam speed is sufficiently large. Numerical solutions of the hot-plasma dispersion relation have…Daniel Verscharen, Benjamin D. G. Chandran·Dec 20, 2012SaveLearn
Reality of Manned Flying ReactorNew concept for reducing dose radiation exposure, which helps to decrease the duration and cost of deep space human missions is introduced. This concept can be efficiently realized, using modern…Dmitry Zhuridov·Dec 19, 2012SaveLearn
Unexpected enhancement in secondary cosmic ray flux during the total lunar eclipse of December 10, 2011Temporal variation of secondary cosmic rays (SCR) flux was measured during the total lunar eclipse on December 10, 2011 and the subsequent full moon on January 8, 2012. The measurements were done at…Anil Raghav, Ankush Bhaskar, Virendra Yadav et al.·Dec 18, 2012SaveLearn
Proton temperature anisotropy and magnetic reconnection in the solar wind: effects of kinetic instabilities on current sheet stabilityWe investigate the role of kinetic instabilities driven by a proton anisotropy on the onset of magnetic reconnection by means of 2-D hybrid simulations. The collisionless tearing of a current sheet…Lorenzo Matteini, Simone Landi, Marco Velli et al.·Dec 10, 2012SaveLearn
Occurrence rate of extreme magnetic stormsStatistical analysis of occurrence rate of magnetic storms induced by different types of interplanetary drivers is made on the basis of OMNI data for period 1976-2000. Using our catalog of large…Yu. I. Yermolaev, I. G. Lodkina, N. S. Nikolaeva et al.·Nov 19, 2012SaveLearn
A New Approach to Impulsive Rendezvous near Circular OrbitA new approach is presented for the problem of optimal impulsive rendezvous of a spacecraft in an inertial frame near a circular orbit in a Newtonian gravitational field. The total characteristic…Thomas Carter, Mayer Humi·Nov 13, 2012SaveLearn
Common dependence on earthquake magnitudes for the trapped particles bursts approaching the earthquakeTrapped particles bursts have long been observed to be frequently occurred several hours before earthquakes, especially for strong earthquakes, from several space experiments during past decades.…Ping Wang, Huanyu Wang, Hong Lu et al.·Nov 8, 2012SaveLearn
Objects orbiting the Earth in deep resonanceThe increasing number of objects orbiting the Earth justifies the great attention and interest in the observation, spacecraft protection and collision avoidance. These studies involve different…J. C. Sampaio, E. Wnuk, R. Vilhena de Moraes et al.·Oct 28, 2012SaveLearn
Analysis on diurnal global geomagnetic variability under quiet-time conditionsThis paper describes a methodology (or treatment) to establish a representative signal of the global magnetic diurnal variation based on a spatial distribution in both longitude and latitude of a set…Virginia Klausner, Margarete Oliveira Domingues, Odim Mendes et al.·Oct 5, 2012SaveLearn
The Implications of Discontinuities for Testing Theories of Turbulence in the Solar WindIn-situ observations of magnetic field fluctuations in the solar wind show a broad continuum in the power spectral density (PSD) with a power-law range of scaling often identified as an inertial…A. J. Turner, S. C. Chapman, G. Gogoberidze·Oct 5, 2012SaveLearn
Kinetic Scale Density Fluctuations in the Solar WindWe motivate the importance of studying kinetic scale turbulence for understanding the macroscopic properties of the heliosphere, such as the heating of the solar wind. We then discuss the technique…C. H. K. Chen, G. G. Howes, J. W. Bonnell et al.·Sep 29, 2012SaveLearn
Evidence of small-scale field aligned current sheets from the low and middle altitude cusp continuing in the ionosphereWe investigate kilometer-scale field-aligned currents that were detected both in the magnetospheric cusp at a few Earth radii altitude and in the ionosphere by satellites that were, according to the…Tatjana Zivkovic, Stephan Buchert, Hermann Opgenoorth et al.·Sep 28, 2012SaveLearn
Alignment and scaling of large-scale fluctuations in the solar windWe investigate the dependence of solar wind fluctuations measured by the Wind spacecraft on scale and on the degree of alignment between oppositely directed Elsasser fields. This alignment controls…Robert T. Wicks, Alfred Mallet, Timothy S. Horbury et al.·Sep 24, 2012SaveLearn
The Deflection of the Two Interacting Coronal Mass Ejections of 2010 May 23-24 as Revealed by Combined In situ Measurements and Heliospheric ImagingIn 2010 May 23-24, SDO observed the launch of two successive coronal mass ejections (CMEs), which were subsequently tracked by the SECCHI suite onboard STEREO. Using the COR2 coronagraphs and the…N. Lugaz, C. J. Farrugia, J. A. Davies et al.·Sep 11, 2012SaveLearn
Active Radiation Shield for Space Exploration Missions (ARSSEM)One of the major issues to be solved is the protection from the effects of ionizing radiation. Exploration mission, lasting two to three years in space, represents a very significant step from the…R. Battiston, W. J. Burger, V. Calvelli et al.·Sep 10, 2012SaveLearn
Mesopause Temperature Retrieval from SATI Measured Spectra with a Linear Background Component. Results from the Numerical SimulationThe Spectral Airglow Temperature Imager is a ground-based spectral instrument for spatial registration of airglow emissions. The basic aim of the instrument development is the investigation of…Atanas Marinov Atanassov·Sep 8, 2012SaveLearn
Climatology of Mid-latitude Ionospheric Disturbances from the Very Large Array Low-frequency Sky SurveyThe results of a climatological study of ionospheric disturbances derived from observations of cosmic sources from the Very Large Array (VLA) Low-frequency Sky Survey (VLSS) are presented. We have…J. F. Helmboldt, W. M. Lane, W. D. Cotton·Sep 5, 2012SaveLearn
Advancing In Situ Modeling of ICMEs: New Techniques for New ObservationsIt is generally known that multi-spacecraft observations of interplanetary coronal mass ejections (ICMEs) more clearly reveal their three-dimensional structure than do observations made by a single…Tamitha Mulligan, Alysha A. Reinard, Benjamin J. Lynch·Aug 25, 2012SaveLearn
Downward transport of electromagnetic radiation by electron holes?An attractive mechanism for radiation transport by electron holes from the magnetospheric auroral cavity source region down to the ionosphere and possibly even down to the atmosphere is examined.…R. A. Treumann, W. Baumjhohann, J. LaBelle et al.·Aug 15, 2012SaveLearn
Composition Structure of Interplanetary Coronal Mass Ejections From Multispacecraft Observations, Modeling, and Comparison with Numerical SimulationsWe present an analysis of the ionic composition of iron for two interplanetary coronal mass ejections observed in May 21-23 2007 by the ACE and STEREO spacecraft in the context of the magnetic…Alysha Reinard, Benjamin Lynch, Tamitha Mulligan·Aug 8, 2012SaveLearn
The Acceleration of Electrons at Perpendicular Shocks and its Implication for Solar Energetic Particle eventsWe present a study of the acceleration of electrons at a perpendicular shock that propagates through a turbulent magnetic field. The energization process of electrons is investigated by utilizing a…Fan Guo, Joe Giacalone·Jul 27, 2012SaveLearn