Solar wind turbulence at 0.72 AU and solar minimumWe investigate Venus Express (VEX) observations of magnetic field fluctuations performed systematically in the solar wind at 0.72 Astronomical Units (AU), between 2007 and 2009, during the deep…Eliza Teodorescu, Marius Echim, Costel Munteanu et al.·May 20, 2015SaveLearn
The telegraph approximation for focused cosmic-ray transport in the presence of boundariesDiffusive cosmic-ray transport in nonuniform large-scale magnetic fields in the presence of boundaries is considered. Reflecting and absorbing boundary conditions are derived for a modified telegraph…Yuri E. Litvinenko, Frederic Effenberger, Reinhard Schlickeiser·May 19, 2015SaveLearn
Generation of Alfvénic Waves and Turbulence in Reconnection JetsThe magnetohydrodynamic linear stability with the localized bulk flow oriented parallel to the neutral sheet is investigated, by including the Hall effect and the guide magnetic field. We observe…Masahiro Hoshino·May 18, 2015SaveLearn
Crash test for the Copenhagen problem with oblatenessThe case of the planar circular restricted three-body problem where one of the two primaries is an oblate spheroid is investigated. We conduct a thorough numerical analysis on the phase space mixing…Euaggelos E. Zotos·May 15, 2015SaveLearn
The electron distribution function downstream of the solar-wind termination shock: Where are the hot electrons?In the majority of the literature on plasma shock waves, electrons play the role of "ghost particles," since their contribution to mass and momentum flows is negligible, and they have been…Hans J. Fahr, John D. Richardson, Daniel Verscharen·May 11, 2015SaveLearn
A General Quadrature Solution for Relativistic, Non-relativistic, and Weakly-Relativistic Rocket EquationsWe show the traditional rocket problem, where the ejecta velocity is assumed constant, can be reduced to an integral quadrature of which the completely non-relativistic equation of Tsiolkovsky, as…Adam L. Bruce·Apr 27, 2015SaveLearn
Real-time imaging of density ducts between the plasmasphere and ionosphereIonization of the Earth's atmosphere by sunlight forms a complex, multi-layered plasma environment within the Earth's magnetosphere, the innermost layers being the ionosphere and…Shyeh Tjing Loi, Tara Murphy, Iver H. Cairns et al.·Apr 24, 2015SaveLearn
Comparative Analysis of Dayside Reconnection Models in Global Magnetosphere SimulationsWe test and compare a number of existing models predicting the location of magnetic reconnection at Earth's dayside magnetopause for various solar wind conditions. We employ robust image…C. M. Komar, R. L. Fermo, P. A. Cassak·Apr 23, 2015SaveLearn
Forward Modeling of Reduced Power Spectra From Three-Dimensional k-SpaceWe present results from a numerical forward model to evaluate one-dimensional reduced power spectral densities (PSD) from arbitrary energy distributions in k-space. In this model, we can…Michael von Papen, Joachim Saur·Apr 20, 2015SaveLearn
Nonlinear sub-cyclotron resonance as a formation mechanism for gaps in banded chorusAn interesting characteristic of magnetospheric chorus is the presence of a frequency gap at ω 0.5Ωe, where Ωe is the electron cyclotron angular frequency. Recent chorus observations…Xiangrong Fu, Zehua Guo, Chuanfei Dong et al.·Apr 20, 2015SaveLearn
Orientation of x-lines in asymmetric magnetic reconnection - mass ratio dependencyUsing fully kinetic simulations, we study the x-line orientation of magnetic reconnection in an asymmetric configuration. A spatially localized perturbation is employed to induce a single x-line,…Yi-Hsin Liu, Michael Hesse, Masha Kuznetsova·Apr 13, 2015SaveLearn
Reduction of Ion Heating During Magnetic Reconnection by Large-Scale Effective PotentialsThe physical processes that control the partition of released magnetic energy between electrons and ions during reconnection is explored through particle-in-cell simulations and analytical…C. C. Haggerty, M. A. Shay, J. F. Drake et al.·Apr 8, 2015SaveLearn
Monte Carlo model for electron degradation in methaneWe present a Monte Carlo model for degradation of 1-10,000 eV electrons in an atmosphere of methane. The electron impact cross sections for CH4 are compiled and analytical representations of these…Anil Bhardwaj, Vrinda Mukundan·Apr 8, 2015SaveLearn
Ensemble Forecasting of Major Solar Flares -- First ResultsWe present the results from the first ensemble prediction model for major solar flares (M and X classes). The primary aim of this investigation is to explore the construction of an ensemble for an…J. A. Guerra, A. Pulkkinen, V. M. Uritsky·Apr 6, 2015SaveLearn
Determining the Range of an Artificial Satellite Using its Observed Trigonometric ParallaxObserving artificial satellites is a relatively new and unique branch of astronomy that is very interesting and dynamic. One specific aspect of observing these objects is that although they appear…Michael A. Earl·Apr 4, 2015SaveLearn
5-minute Solar Oscillations and Ion Cyclotron Waves in the Solar WindIn the present paper we study impact of the photospheric 5-minute oscillations on the ion cyclotron waves in the solar wind. We proceed from the assumption that the ion cyclotron waves in solar wind…Anatol Guglielmi, Alexander Potapov, Boris Dovbnya·Apr 1, 2015SaveLearn
Dynamics of large-scale solar-wind streams obtained by the double superposed epoch analysisUsing the OMNI data for period 1976-2000 we investigate the temporal profiles of 20 plasma and field parameters in the disturbed large-scale types of solar wind (SW): CIR, ICME (both MC and Ejecta)…Yu. I. Yermolaev, I. G. Lodkina, N. S. Nikolaeva et al.·Mar 28, 2015SaveLearn
United Nations Basic Space Science Initiative (UNBSSI) 1991-2012 and BeyondThis paper contains an overview and summary on the achievements of the United Nations basic space science initiative in terms of donated and provided planetariums, astronomical telescopes, and space…A. M. Mathai, H. J. Haubold, W. R. Balogh·Mar 23, 2015SaveLearn
Variations of dose rate observed by MSL/RAD in transit to MarsAims: To predict the cruise radiation environment related to future human missions to Mars, the correlation between solar modulation potential and the dose rate measured by the Radiation Assessment…Jingnan Guo, Cary Zeitlin, Robert F. Wimmer-Schweingruber et al.·Mar 23, 2015SaveLearn
Understanding space weather to shield society: A global road map for 2015-2025 commissioned by COSPAR and ILWSThere is a growing appreciation that the environmental conditions that we call space weather impact the technological infrastructure that powers the coupled economies around the world. With that…Carolus J. Schrijver, Kirsti Kauristie, Alan D. Aylward et al.·Mar 20, 2015SaveLearn
The Cosmic Ray Helium and Carbon Nuclei Spectra Measured by Voyager 1 at Low Energies and Earth Based Measurements of these Nuclei up to 200 GeV nuc Concordance at High Energies with a Leaky Box Propagation ModelA comparison of the Helium and Carbon interstellar spectra measured at Voyager in the local interstellar medium leads to a different interpretation than a comparison of the Hydrogen to Helium…W. R. Webber, P. R. Higbie·Mar 19, 2015SaveLearn
Shocks inside CMEs: A Survey of Properties from 1997 to 2006We report on 49 fast-mode forward shocks propagating inside coronal mass ejections (CMEs) as measured by Wind and ACE at 1 AU from 1997 to 2006. Compared to typical CME-driven shocks, these shocks…N. Lugaz, C. J. Farrugia, C. W. Smith et al.·Mar 13, 2015SaveLearn
Assessing the performance of thermospheric modelling with data assimilation throughout solar cycles 23 and 24Data assimilation procedures have been developed for thermospheric models using satellite density measurements as part of the EU Framework Package 7 ATMOP Project. Two models were studied; one a…Sophie A. Murray, Edmund M. Henley, David R. Jackson et al.·Mar 11, 2015SaveLearn
A link between solar events and congenital malformations: Is ionizing radiation enough to explain it?Cosmic rays are known to cause biological effects directly and through ionizing radiation produced by their secondaries. These effects have been detected in airline crews and other specific cases…A. C. Overholt, A. L. Melott, D. Atri·Mar 6, 2015SaveLearn
Resonance broadening due to particle scattering and mode-coupling in the quasi-linear relaxation of electron beamsOf particular interest for radio and hard X-ray diagnostics of accelerated electrons during solar flares is the understanding of the basic non-linear mechanisms regulating the relaxation of electron…Nicolas H. Bian, Eduard P. Kontar, Heather Ratcliffe·Mar 5, 2015SaveLearn