Tests for coronal electron temperature signatures in suprathermal electron populations at 1 AUThe development of knowledge of how the coronal origin of the solar wind affects its in situ properties is one of the keys to understanding the relationship between the Sun and the heliosphere. In…Allan R. Macneil, Christopher J. Owen, Robert T. Wicks·Nov 8, 2017SaveLearn
Solar wind turbulent cascade from MHD to sub-ion scales: large-size 3D hybrid particle-in-cell simulationsSpectral properties of the turbulent cascade from fluid to kinetic scales in collisionless plasmas are investigated by means of large-size three-dimensional (3D) hybrid (fluid electrons, kinetic…Luca Franci, Simone Landi, Andrea Verdini et al.·Nov 7, 2017SaveLearn
Nature of stochastic ion heating in the solar wind: testing the dependence on plasma beta and turbulence amplitudeThe solar wind undergoes significant heating as it propagates away from the Sun; the exact mechanisms responsible for this heating are not yet fully understood. We present for the first time a…Daniel Vech, Kristopher G. Klein, Justin C. Kasper·Nov 5, 2017SaveLearn
Whistler precursor and intrinsic variability of quasi-perpendicular shocksThe structure of whistler precursor in a quasi-perpendicular shock is studied within two-fluid approach in one-dimensional case. The complete set of equations is reduced to the KdV equation, if no…G. Granit, M. Gedalin·Nov 4, 2017SaveLearn
Different types of ion populations upstream of the 8 October 2013 interplanetary shockWe show for the first time that different types of suprathermal ion distributions may exist upstream of a single interplanetary shock. ACE and the two ARTEMIS satellites observed a shock on 8 October…Primoz Kajdic, Heli Hietala, Xochitl Blanco Cano·Nov 3, 2017SaveLearn
An empirical modification of the force field approach to describe the modulation of galactic cosmic rays close to Earth in a broad range of rigiditiesOn their way through the heliosphere, Galactic Cosmic Rays (GCRs) are modulated by various effects before they can be detected at Earth. This process can be described by the Parker equation, which…Jan Gieseler, Bernd Heber, Konstantin Herbst·Oct 30, 2017SaveLearn
Ionosphere-thermosphere global time response to geomagnetic stormsIn this study, we investigate thermospheric neutral mass density heating associated with 168 CME-driven geomagnetic storms in the period of May 2001 to September 2011. We use neutral density measured…D. M. Oliveira, E. Zesta, P. W. Schuck et al.·Oct 21, 2017SaveLearn
Statistical study of auroral omega bandsThe presence of very few statistical studies on auroral omega bands motivated us to test-use a semi-automatic method for identifying large-scale undulations of the diffuse aurora boundary and to…Noora Partamies, James M. Weygand, Liisa Juusola·Oct 18, 2017SaveLearn
GPS scintillations associated with cusp dynamics and polar cap patchesThis paper investigates the relative scintillation level associated with cusp dynamics (including precipitation, flow shears, etc.) with and without the formation of polar cap patches around the cusp…Yaqi Jin, Jøran I. Moen, Kjellmar Oksavik et al.·Oct 18, 2017SaveLearn
Interstellar Pickup Ion Observations to 38 AUWe provide the first direct observations of interstellar H+ and He+ pickup ions in the solar wind from 22 AU to 38 AU. We use the Vasyliunas and Siscoe model functional form to quantify the pickup…D. J. McComas, E. J. Zirnstein, M. Bzowski et al.·Oct 14, 2017SaveLearn
The first in-situ observation of torsional Alfven waves during the interaction of large-scale magnetic cloudsThe large-scale magnetic cloud such as coronal mass ejections (CMEs) is the fundamental driver of the space weather. The interaction of the multiple CMEs in interplanetary space affects their dynamic…Anil Raghav, Ankita Kule·Oct 13, 2017SaveLearn
Compressible magnetohydrodynamic turbulence in the Earth's magnetosheath: estimation of the energy cascade rate using in situ spacecraft dataThe first estimation of the energy cascade rate |εC| of magnetosheath turbulence is obtained using the CLUSTER and THEMIS spacecraft data and an exact law of compressible isothermal…Lina Hadid, Fouad Sahraoui, Sebastien Galtier et al.·Oct 12, 2017SaveLearn
Localized and intense energy conversion in the diffusion region of asymmetric magnetic reconnectionWe analyze a high-resolution simulation of magnetopause reconnection observed by the Magnetospheric Multiscale (MMS) mission and explain the occurrence of strongly localized dissipation with an…M. Swisdak, J. F. Drake, L. Price et al.·Oct 12, 2017SaveLearn
The detection of ultra-relativistic electrons in low Earth orbitAims. To better understand the radiation environment in low Earth orbit (LEO), the analysis of in-situ observations of a variety of particles, at different atmospheric heights, and in a wide range of…A. C. Katsiyannis, M. Dominique, V. Pierrard et al.·Oct 12, 2017SaveLearn
Parametric Decay Instability and Dissipation of Low-frequency Alfvén Waves in Low-beta Turbulent PlasmasEvolution of the parametric decay instability (PDI) of a circularly polarized Aflvén wave in a turbulent low-beta plasma background is investigated using 3D hybrid simulations. It is shown that the…Xiangrong Fu, Hui Li, Fan Guo et al.·Oct 11, 2017SaveLearn
Using the Coronal Evolution to Successfully Forward Model CMEs' In Situ Magnetic ProfilesPredicting the effects of a coronal mass ejection (CME) impact requires knowing if impact will occur, which part of the CME impacts, and its magnetic properties. We explore the relation between CME…C. Kay, N. Gopalswamy·Oct 10, 2017SaveLearn
Anisotropies of the magnetic field fluctuations at kinetic scales in the solar wind : Cluster observationsWe present the first statistical study of the anisotropy of the magnetic field turbulence in the solar wind between 1 and 200Hz, i.e. from proton to sub-electron scales. We consider 93 10-minute…Catherine Lacombe, Olga Alexandrova, Lorenzo Matteini·Oct 6, 2017SaveLearn
Classification of Solar Wind with Machine LearningWe present a four-category classification algorithm for the solar wind, based on Gaussian Process. The four categories are the ones previously adopted in Xu & Borovsky [2015]: ejecta, coronal hole…Enrico Camporeale, Algo Carè, Joseph E. Borovsky·Oct 6, 2017SaveLearn
Pulsations in the Earth's Lower Ionosphere Synchronized with Solar Flare EmissionSolar flare emission at X-ray and extreme ultraviolet (EUV) energies can cause substantial enhancements in the electron density in the Earth's lower ionosphere. It is now become clear that flares…Laura A. Hayes, Peter T. Gallagher, Joseph McCauley et al.·Oct 4, 2017SaveLearn
Propagation and Interaction Properties of Successive Coronal Mass Ejections in Relation to a Complex Type II Radio BurstWe examine the propagation and interaction properties of three successive coronal mass ejections (CMEs) from 2001 November 21-22, with a focus on their connection with the behaviors of the associated…Ying D. Liu, Xiaowei Zhao, Bei Zhu·Sep 29, 2017SaveLearn
Modulation of Galactic Cosmic Rays in the Inner Heliosphere over Solar CyclesThe 11-year and 22-year modulation of galactic cosmic rays (GCRs) in the inner heliosphere are studied using a numerical model developed by Qin and Shen in 2017. Based on the numerical solutions of…Z. -N. Shen, G. Qin·Sep 23, 2017SaveLearn
Principal component analysis of geomagnetic activity: New information on solar windWe use the principal component analysis (PCA) to study geomagnetic activity at annual resolution using a network of 26 magnetic stations in 1966-2015, and an extended network of 40 stations in…Kalevi Mursula, Lauri Holappa·Sep 19, 2017SaveLearn
Modulation of Solar Wind Energy Flux Input on Global Tropical Cyclone ActivityStudies on Sun-climate connection have been carried out for several decades, and almost all of them focused on the effects of solar total irradiation energy. As the second major terrestrial energy…Hui Li, Chi Wang, Shengping He et al.·Sep 18, 2017SaveLearn
Applying the Spacecraft with a Solar Sail to Form the Climate on a Mars BaseThis article is devoted to research the application of the spacecraft with a solar sail to support the certain climatic conditions in an area of the Mars surface. Authors propose principles of…Miroslav A. Rozhkov, Irina V. Gorbunova, Olga L. Starinova·Sep 18, 2017SaveLearn
The usefulness of Poynting's theorem in magnetic turbulenceWe rewrite Poynting's theorem, already used in a previous publication (Treumann & Baumjohann 2017) to derive relations between the turbulent magnetic and electric power spectral densities, to…R. A. Treumann, W. Baumjohann·Sep 14, 2017SaveLearn