Frame Dependence of the Electric Field Spectrum of Solar Wind TurbulenceWe present the first survey of electric field data using the ARTEMIS spacecraft in the solar wind to study inertial range turbulence. It was found that the average perpendicular spectral index of the…C. H. K. Chen, S. D. Bale, C. Salem et al.·May 12, 2011SaveLearn
Relativistic transformation of phase-space distributionsWe investigate the transformation of the distribution function in the relativistic case, a problem of interest in plasma when particles with high (relativistic) velocities come into play as for…R. A. Treumann, R. Nakamura, W. Baumjohann·May 11, 2011SaveLearn
Turbulent spectra and spectral kinks in the transition range from MHD to kinetic Alfvén turbulenceA weakly dispersive sub-range (WDR) of kinetic Alfvén turbulence is distinguished and investigated for the first time in the context of MHD/kinetic turbulence transition. We found perpendicular…Yuriy Voitenko, Johan De Keyser·May 10, 2011SaveLearn
GPS Ionospheric mapping and tomography: A case of study in a geomagnetic stormThe ionosphere has been normally detected by traditional instruments, such as ionosonde, scatter radars, topside sounders onboard satellites and in situ rocket. However, most instruments are…Shuanggen Jin, Rui Jin·May 10, 2011SaveLearn
Ravens satellite mission concept studyThe concept for Ravens satellite mission was proposed in response to a CSA AO for potential Canadian mission contributions to the International Living With a Star (ILWS) program. Ravens was conceived…Eric F. Donovan·Apr 18, 2011SaveLearn
Kinetic-scale magnetic turbulence and finite Larmor radius effects at MercuryWe use a nonstationary generalization of the higher-order structure function technique to investigate statistical properties of the magnetic field fluctuations recorded by MESSENGER spacecraft during…V. M. Uritsky, J. A. Slavin, G. V. Khazanov et al.·Apr 13, 2011SaveLearn
A model of so-called `Zebra' emissions in type IV radio burstsA simple mechanism for the generation of electromagnetic Zebra pattern emission is proposed. The mechanism is based on the generation of an ion-ring distribution in a magnetic mirror geometry in the…R. A. Treumann, R. Nakamura, W. Baumjohann·Apr 13, 2011SaveLearn
The effects of strong temperature anisotropy on the kinetic structure of collisionless slow shocks and reconnection exhausts. Part II: TheorySimulations of collisionless oblique propagating slow shocks have revealed the existence of a transition associated with a critical temperature anisotropy epsilon=1-mu0(Pparallel-Pperpendicular)/…Yi-Hsin Liu, J. F. Drake, M. Swisdak·Apr 11, 2011SaveLearn
The interaction between the Moon and the solar windWe study the interaction between the Moon and the solar wind using a three-dimensional hybrid plasma solver. The proton fluxes and electromagnetical fields are presented for typical solar wind…M. Holmström, S. Fatemi, Y. Futaana et al.·Apr 7, 2011SaveLearn
A Concept For Elimination Of Small Orbital DebrisA concept for forced reentry of small orbital debris with characteristic dimension ~ 10 cm from the highly populated sun synchronous orbit by injecting micron scale dust grains to artificially…Gurudas Ganguli, Christopher Crabtree, Leonid Rudakov et al.·Apr 7, 2011SaveLearn
Intermittent heating in the solar corona employing a 3D MHD modelWe investigate the spatial and temporal evolution of the heating of the corona of a cool star such as our Sun in a three-dimensional magneto-hydrodynamic (3D MHD) model. We solve the 3D MHD problem…Sven Bingert, Hardi Peter·Mar 30, 2011SaveLearn
Modelling the reflective thermal contribution to the acceleration of the Pioneer spacecraftWe present an improved method to compute the radiative momentum transfer in the Pioneer 10 & 11 spacecraft that takes into account both diffusive and specular reflection. The method allows for more…F. Francisco, O. Bertolami, P. J. S. Gil et al.·Mar 27, 2011SaveLearn
Magnetosphere-Ionosphere Coupling Through E-region Turbulence: Anomalous Conductivities and Frictional HeatingGlobal magnetospheric MHD codes using ionospheric conductances based on laminar models systematically overestimate the cross-polar cap potential during storm time by up to a factor of two. At these…Y. S. Dimant, M. M. Oppenheim·Mar 15, 2011SaveLearn
Magnetosphere-Ionosphere Coupling Through E-region Turbulence 1: Energy BudgetDuring periods of intense geomagnetic activity, strong electric fields and currents penetrate from the magnetosphere into high-latitude ionosphere where they dissipate energy, form electrojets, and…Y. S. Dimant, M. M. Oppenheim·Mar 15, 2011SaveLearn
Improving the spatial resolution by effective subtraction technique at Irkutsk incoherent scatter radar: the theory and experimentWe describe a sounding technique that allows us to improve spatial resolution of Irkutsk Incoherent Scatter Radar without loosing spectral resolution. The technique is based on transmitting of…Oleg I. Berngardt, Dmitry S. Kushnarev·Mar 14, 2011SaveLearn
Orbital Debris-Debris Collision AvoidanceWe focus on preventing collisions between debris and debris, for which there is no current, effective mitigation strategy. We investigate the feasibility of using a medium-powered (5 kW) ground-based…James Mason, Jan Stupl, William Marshall et al.·Mar 9, 2011SaveLearn
Locating the LCROSS Impact CratersThe Lunar CRater Observations and Sensing Satellite (LCROSS) mission impacted a spent Centaur rocket stage into a permanently shadowed region near the lunar south pole. The Sheperding Spacecraft…William Marshall, Mark Shirley, Zachary Moratto et al.·Mar 9, 2011SaveLearn
Collisionless magnetic reconnection: Flux quanta, field lines, `composite electrons' -- Is the quantum-Hall effect involved in its micro-scale physics?Microscopically, collisionless reconnection in thin current sheets is argued to involve `composite electrons' in the ion inertial (Hall current) domain, a tiny fraction of electrons only. These…R. A. Treumann, R. Nakamura, W. Baumjohann·Mar 5, 2011SaveLearn
The effects of strong temperature anisotropy on the kinetic structure of collisionless slow shocks and reconnection exhausts. Part I: PIC simulationsA 2-D Riemann problem is designed to study the development and dynamics of the slow shocks that are thought to form at the boundaries of reconnection exhausts. Simulations are carried out for varying…Yi-Hsin Liu, J. F. Drake, M. Swisdak·Mar 1, 2011SaveLearn
Downward auroral currents from the reconnection Hall-regionWe present a simple (stationary) mechanism capable of generating the auroral downward field-aligned electric field that is needed for accelerating the ionospheric electron component up into the…R. A. Treumann, R. Nakamura, W. Baumjohann·Feb 16, 2011SaveLearn
Magnetosphere-ionosphere coupling at Jupiter-like exoplanets with internal plasma sources: implications for detectability of auroral radio emissionsIn this paper we provide the first consideration of magnetosphere-ionosphere coupling at Jupiter-like exoplanets with internal plasma sources such as volcanic moons. We estimate the radio power…J. D. Nichols·Feb 14, 2011SaveLearn
Ion Beam Shepherd for Contactless Space Debris RemovalA novel concept for contactless active removal of large space debris is proposed exploiting the use of a high-speed targeted ion beam. The ion beam shepherd spacecraft (IBS) is equipped with an…C. Bombardelli, J. Pelaez·Feb 7, 2011SaveLearn
Ion Beam Shepherd for Asteroid DeflectionWe present a novel concept to impart a continuous thrust to an Earth threatening asteroid from a hovering spacecraft without need for physical attachment nor gravitational interaction with the…C. Bombardelli, J. Pelaez·Feb 7, 2011SaveLearn
On the nature of the in-ecliptic interplanetary magnetic field's two-humped distribution at 1AUIt was found out that the distribution's shape of the in-ecliptic (as well as radial) component of the interplanetary magnetic field (IMF) significantly changes with the heliocentric distance,…Olga Khabarova, Vladimir Obridko·Feb 6, 2011SaveLearn
The dissipation of solar wind turbulent fluctuations at electron scalesWe present two-dimensional fully-kinetic Particle-in-Cell simulations of decaying electromagnetic fluctuations. The computational box is such that wavelengths ranging from electron to ion gyroradii…Enrico Camporeale, David Burgess·Jan 31, 2011SaveLearn