Cosmic Noise Absorption During Solar Proton Events in WACCM-D and Riometer ObservationsSolar proton events (SPEs) cause large-scale ionization in the middle atmosphere leading to ozone loss and changes in the energy budget of the middle atmosphere. The accurate implementation of SPEs…Erkka Heino, Pekka T. Verronen, Antti Kero et al.·Jan 21, 2019SaveLearn
Concerning pressure and entropy of shock-accelerated heliosheath electronsWe study the behaviour of shocked wind-electrons leaving wind-driving stars after undergoing the outer wind termination shock. As an example, we describe the evolution of the keV-energetic electron…Hans J. Fahr, Robindro Dutta-Roy·Jan 16, 2019SaveLearn
The Source Regions of WhistlersWe present a new method for identifying the source regions of lightning generated whistlers observed at a fixed location. In addition to the spatial distribution of causative lightning discharges, we…Dávid Koronczay, János Lichtenberger, Mark A. Clilverd et al.·Jan 15, 2019SaveLearn
Penetrating particle ANalyzer (PAN)PAN is a scientific instrument suitable for deep space and interplanetary missions. It can precisely measure and monitor the flux, composition, and direction of highly penetrating particles ($>…X. Wu, G. Ambrosi, P. Azzarello et al.·Jan 14, 2019SaveLearn
Magnetospheric Multiscale Observation of Kinetic Signatures in the Alfv\'en VortexAlfv\'en vortex is a multi-scale nonlinear structure which contributes to intermittency of turbulence. Despite previous explorations mostly on the spatial properties of the Alfv\'en vortex (i.e.,…Tieyan Wang, Olga Alexandrova, Denise Perrone et al.·Jan 12, 2019SaveLearn
On the Origin of Otho-Gardenhose Heliospheric FluxParker spiral theory predicts the heliospheric magnetic field (HMF) will have components of opposite polarity radially toward the Sun and tangentially antiparallel to the solar rotation (i.e. in GSE…Mike Lockwood, Mat Owens, Allan Macneil·Jan 10, 2019SaveLearn
Multi-Revolution Low-Thrust Trajectory Optimization Using Symplectic MethodsOptimization of low-thrust trajectories that involve a larger number of orbit revolutions is considered a challenging problem. This paper describes a high-precision symplectic method and optimization…Zhibo E, Davide Guzzetti·Jan 9, 2019SaveLearn
Implementation and validation of the GEANT4/AtRIS code to model the radiation environment at MarsA new GEANT4 particle transport model -- the Atmospheric Radiation Interaction Simulator (AtRIS, Banjac et al. 2018a. J. Geophys. Res.) -- has been recently developed in order to model the…Jingnan Guo, Saša Banjac, Lennart Roestel et al.·Jan 7, 2019SaveLearn
Observations of Magnetic Reconnection in the Transition Region of Quasi-Parallel ShocksUsing observations of Earth's bow shock by the Magnetospheric Multiscale mission, we show for the first time that active magnetic reconnection is occurring at current sheets embedded within the…I. Gingell, S. J. Schwartz, J. P. Eastwood et al.·Jan 4, 2019SaveLearn
Unified view of nonlinear wave structures associated with whistler-mode chorusA range of nonlinear wave structures, including Langmuir waves, unipolar electric fields and bipolar electric fields, are often observed in association with whistler-mode chorus waves in the…Xin An, Jinxing Li, Jacob Bortnik et al.·Jan 4, 2019SaveLearn
EMIC Wave Distributions Observed by the Van Allen ProbesCharacteristics of electromagnetic ion cyclotron (EMIC) waves detected by the Van Allen probes are statistically analyzed, particularly wave-band, bandwidth, and time duration. The Electric and…Nezir Alic·Jan 3, 2019SaveLearn
Quasi-separatrix Layers Induced by Ballooning Instability in Near-Earth MagnetotailMagnetic reconnection processes in the near-Earth magnetotail can be highly 3-dimensional (3D) in geometry and dynamics, even though the magnetotail configuration itself is nearly two dimensional due…Ping Zhu, Zechen Wang, Jun Chen et al.·Jan 2, 2019SaveLearn
Simulations of radiation damage in spacecraft camera for ESA JUICE missionThe JUpiter ICy moons Explorer (JUICE) is an ESA interplanetary spacecraft being developed to perform detailed investigations of the Jupiter system and three of its icy moons: Europa, Callisto and…Hualin Xiao, Wojtek Hajdas, Stephane Beauvivre et al.·Jan 1, 2019SaveLearn
Evaluation of Kinetic Ballooning Instability in the Near-Earth MagnetotailBallooning instabilities are widely believed to be a possible triggering mechanism for the onset of substorm and current disruption initiation in the near-Earth magnetotail. Yet the stability of the…Abdullah Khan, P. Zhu, A. Ali·Dec 30, 2018SaveLearn
A search for signatures of Europa's atmosphere and plumes in Galileo charged particle dataRemote sensing observations indicate that Europa is surrounded by a tenuous atmosphere. Furthermore, recent observations and historic data from Galileo hint at the occurrence of water vapour…Hans Leo Frans Huybrighs·Dec 28, 2018SaveLearn
Ecology of Near-Earth SpaceThe technical achievements of our civilization are accompanied by certain negative consequences affect the near-Earth space. The problem of clogging of near-Earth space by "space debris" as purely…E. H. Nikoghosyan·Dec 25, 2018SaveLearn
Observational evidence of magnetic reconnection in the terrestrial bow shock transition regionWe report evidence of magnetic reconnection in the transition region of the terrestrial bow shock when the angle between the shock normal and the immediate upstream magnetic field is 65 degrees. An…Shan Wang, Li-Jen Chen, Naoki Bessho et al.·Dec 21, 2018SaveLearn
Dynamics in first-order mean motion resonances: analytical study of a simple model with stochastic behaviourWe examine a 2DOF Hamiltonian system, which arises in study of first-order mean motion resonance in spatial circular restricted three-body problem "star-planet-asteroid", and point out some…Sergey Efimov, Vladislav Sidorenko·Dec 19, 2018SaveLearn
Alpha particle thermodynamics in the inner heliosphere fast solar windPlasma processes occurring in the corona and solar wind can be probed by studying the thermodynamic properties of different ion species. However, most in-situ observations of positive ions in the…D. Stansby, D. Perrone, L. Matteini et al.·Dec 17, 2018SaveLearn
On the 1/f spectrum in the solar wind and its connection with magnetic compressibilityWe discuss properties of Alfv\'enic fluctuations with large amplitude in plasmas characterised by low magnetic field compression. We note that in such systems power laws can not develop with…Lorenzo Matteini, David Stansby, Timothy Horbury et al.·Dec 13, 2018SaveLearn
Forecasting Periods of Strong Southward Magnetic Field Following Interplanetary ShocksLong periods of strong southward magnetic fields are known to be the primary cause of intense geomagnetic storms. The majority of such events are caused by the passage over Earth of a magnetic…T. M. Salman, N. Lugaz, C. J. Farrugia et al.·Dec 13, 2018SaveLearn
On the generation mechanism of electromagnetic cyclotron waves in the solar wind: statistical results from Wind observationsElectromagnetic cyclotron waves (ECWs) near the proton cyclotron frequency are frequently observed in the solar wind, yet their generation mechanism is still an open question. Based on the Wind data…G. Q. Zhao, H. Q. Feng, D. J. Wu et al.·Dec 13, 2018SaveLearn
Quasilinear Consequences of Turbulent Ion Heating by Magnetic Moment BreakingThe fast solar wind emerging from coronal holes is likely heated and accelerated by the dissipation of magnetohydrodynamic turbulence, but the specific kinetic mechanism resulting in the…Philip A. Isenberg, Bernard J. Vasquez, Joseph V. Hollweg·Dec 12, 2018SaveLearn
Observations on a series of merging magnetic flux ropes within an interplanetary coronal mass ejectionCoronal mass ejections (CMEs) are intense solar explosive eruptions. CMEs are highly important players in solar-terrestrial relationships, and they have important consequences for major geomagnetic…Hengqiang Feng, Yan Zhao, Guoqing Zhao et al.·Dec 9, 2018SaveLearn
On slow solar wind with high Alfv\'enicity: from composition and microphysics to spectral propertiesAlfv\'enic fluctuations are very common features in the solar wind and are found especially within the main portion of fast wind streams while the slow wind usually is less Alfv\'enic and more…Raffaella D'Amicis, Lorenzo Matteini, Roberto Bruno·Dec 5, 2018SaveLearn