Correlations at large scales and the onset of turbulence in the fast solar windWe show that the scaling of structure functions of magnetic and velocity fields in a mostly highly Alfvénic fast solar wind stream depends strongly on the joint distribution of the dimensionless…Robert T. Wicks, D. Aaron Roberts, Alfred Mallet et al.·Dec 16, 2013SaveLearn
Dependence of the cross polar cap potential saturation on the type of solar wind streamsWe compare of the cross polar cap potential (CPCP) saturation during magnetic storms induced by various types of the solar wind drivers. By using the model of Siscoe-Hill…N. S. Nikolaeva, Yu. I. Yermolaev, I. G. Lodkina·Dec 3, 2013SaveLearn
Three-dimensional evolution of flux rope CMEs and its relation to the local orientation of the heliospheric current sheetFlux ropes (FRs) ejected from the Sun may change their geometrical orientation during their evolution which directly affects their geoeffectiveness. Therefore, it is crucial to understand how solar…Alexey Isavnin, Angelos Vourlidas, Emilia K. J. Kilpua·Dec 2, 2013SaveLearn
Anisotropic Intermittency of Magnetohydrodynamic TurbulenceA higher-order multiscale analysis of spatial anisotropy in inertial range magnetohydrodynamic turbulence is presented using measurements from the STEREO spacecraft in fast ambient solar wind. We…K. T. Osman, K. H. Kiyani, S. C. Chapman et al.·Nov 23, 2013SaveLearn
Collisional Thermalization of Hydrogen and Helium in Solar Wind PlasmaIn situ observations of the solar wind frequently show the temperature of α-particles (fully ionized helium), Tα, to significantly differ from that of protons (ionized hydrogen), Tp. Many…Bennett A. Maruca, Stuart D. Bale, Luca Sorriso-Valvo et al.·Nov 21, 2013SaveLearn
Hypermodular Self-Assembling Space Solar Power -- Design Option for Mid-Term GEO Utility-Scale Power PlantsThis paper presents a design for scaleable space solar power systems based on free-flying reflectors and module self-assembly. Lower system cost of utility-scale space solar power is achieved by…Martin Leitgab·Nov 18, 2013SaveLearn
Hypermodular Distributed Solar Power Satellites -- Exploring a Technology Option for Near-Term LEO Demonstration and GLPO Full-Scale PlantsThis paper presents a new and innovative design for scaleable space solar power systems based on satellite self-assembly and microwave spatial power combination. Lower system cost of utility-scale…Martin Leitgab·Nov 18, 2013SaveLearn
Modulation of the Solar Wind Velocity by MercuryTo study the variations in the solar wind velocity during inferior conjunctions of Mercury and Earth, we analyzed 54 events in the period 1995 to 2012 by the superimposed epoch method. We have found…Igor F. Nikulin·Nov 14, 2013SaveLearn
Nonlinear evolution of the magnetized Kelvin-Helmholtz instability: from fluid to kinetic modelingThe nonlinear evolution of collisionless plasmas is typically a multi-scale process where the energy is injected at large, fluid scales and dissipated at small, kinetic scales. Accurately modelling…P. Henri, S. S. Cerri, F. Califano et al.·Oct 29, 2013SaveLearn
Magnetic Reconnection under Anisotropic MHD ApproximationWe study the formation of slow-mode shocks in collisionless magnetic reconnection by using one- and two-dimensional collisionless MHD codes based on the double adiabatic approximation and the Landau…K. Hirabayashi, M. Hoshino·Oct 28, 2013SaveLearn
Effect of gravitational stratification on the propagation of a CMEOur aim is to study the role of gravitational stratification on the propagation of CMEs. In particular, we assess how it influences the speed and shape of CMEs and under what conditions the flux rope…Paolo Pagano, Duncan H. Mackay, Stefaan Poedts·Oct 25, 2013SaveLearn
Fast magnetosonic modes of cylindrical magnetotailFMS modes are studied in the model of the magnetotail as a cylinder with plasma sheet. The presence of the plasma sheet leads to a significant modification of the modes existing in the magnetotail in…I. S. Dmitrienko·Oct 11, 2013SaveLearn
First Magdas Equipment In EcuadorThe Magnetic Data Acquisition System (MAGDAS) was installed in the protected Jerusalem Park in Malchingui-Ecuador in October of 2012, under the joint collaboration between Kyushu University of Japan…Ericson López, George Maeda, Klever Vicente et al.·Oct 3, 2013SaveLearn
Effective recombination coefficient and solar zenith angle effects on low-latitude D-region ionosphere evaluated from VLF signal amplitude and its time delay during X-ray solar flaresExcess solar X-ray radiation during solar flares causes an enhancement of ionization in the ionospheric D-region and hence affects sub-ionospherically propagating VLF signal amplitude and phase. In…Tamal Basak, Sandip Kumar Chakrabarti·Sep 21, 2013SaveLearn
Spacecraft charging: incoming and outgoing electronsThis paper presents an overview of the roles played by incoming and outgoing electrons in spacecraft surface and stresses the importance of surface conditions for spacecraft charging. The balance…Shu T. Lai·Sep 18, 2013SaveLearn
Mode-locked Lasers Applied to Deflecting a Near Earth Object on Collision Course with EarthWe consider synchronized trains of sub-picosecond pulses generated by mode-locked lasers applied to deflection of near Earth objects (NEO) on collision course with Earth. Our method is designed to…Richard Fork, Spencer Cole, Luke Burgess et al.·Sep 12, 2013SaveLearn
A New Electric Field in Asymmetric Magnetic ReconnectionWe present a theory and numerical evidence for the existence of a previously unexplored in-plane electric field in collisionless asymmetric magnetic reconnection. This electric field, dubbed the…Kittipat Malakit, Michael A. Shay, Paul A. Cassak et al.·Sep 12, 2013SaveLearn
The Interaction of Two Coronal Mass Ejections: Influence of Relative OrientationWe report on a numerical investigation of two coronal mass ejections (CMEs) which interact as they propagate in the inner heliosphere. We focus on the effect of the orientation of the CMEs relative…N. Lugaz, C. J. Farrugia, W. B. Manchester et al.·Sep 9, 2013SaveLearn
Earthshine observations at high spectral resolution: Exploring and detecting metal lines in the Earth's upper atmosphereObservations of the Earth as a planet using the earthshine technique (i.e. looking at the light reflected from the darkside of the Moon), have been used for climate and astrobiology studies. They…B. González-Merino, E. Pallé, F. Motalebi et al.·Sep 2, 2013SaveLearn
Calculations of the Propagated LIS Electron Spectrum Which Describe the Cosmic Ray Electron Spectrum below ~100 MeV Measured Beyond 122 AU at Voyager 1 and its Relationship to the PAMELA Electron Spectrum above 200 MeVThe new Voyager measurements of cosmic ray electrons between 6-60 MeV beyond 122 AU are very sensitive indicators of cosmic ray propagation and acceleration in the galaxy at a very low modulation…W. R. Webber, P. R. Higbie·Aug 29, 2013SaveLearn
Monte Carlo Simulations of Nonlinear Particle Acceleration in Parallel Trans-relativistic ShocksWe present results from a Monte Carlo simulation of a parallel collisionless shock undergoing particle acceleration. Our simulation, which contains parameterized scattering and a particular thermal…Donald C. Ellison, Donald C. Warren, Andrei M. Bykov·Aug 23, 2013SaveLearn
A Comparison of the Galactic Cosmic Ray H, He and C/O Nuclei Spectra Measured Between ~5 and 500 MeV/nuc Beyond 122 AU at Voyager 1 with the Predictions of a Diffusion Model for Propagation in the GalaxyAfter the disappearance of lower energy heliospheric particles at Voyager 1 starting on August 25th, 2012, spectra of H, He and C/O nuclei were revealed that resembled those to be expected for…W. R. Webber, P. R. Higbie, F. B. McDonald·Aug 20, 2013SaveLearn
Proton Kinetic Effects and Turbulent Energy Cascade Rate in the Solar WindThe first observed connection between kinetic instabilities driven by proton temperature anisotropy and estimated energy cascade rates in the turbulent solar wind is reported using measurements from…Kareem T. Osman, William H. Matthaeus, Khurom H. Kiyani et al.·Aug 11, 2013SaveLearn
The Unfolding of the Spectra of Low Energy Galactic Cosmic Ray H and He Nuclei as the Voyager 1 Spacecraft Exits the Region of Heliospheric ModulationThis paper describes the unfolding of the solar modulated galactic cosmic ray H and He nuclei spectra beyond ~105 AU in the heliosheath. Between 2008.0 and 2012.3 when Voyager 1 went from about 105…W. R. Webber, P. R. Higbie, F. B. McDonald·Aug 8, 2013SaveLearn
Ionospheric observations of Underground Nuclear Explosions (UNE) using GPS and the Very Large ArrayObservations from GPS receivers and the Very Large Array (VLA) radio telescope recorded traveling ionospheric disturbances (TID) from underground nuclear explosions (UNEs), detonated in September…Jihye Park, Joseph Helmboldt, Dorota A. Grejner-Brzezinska et al.·Aug 3, 2013SaveLearn