From Wormholes to the Warp Drive: Using theoretical physics to place ultimate bounds on technologyThe serious study of such science fiction staples as wormholes, time travel, and the warp drive, as a means of understanding and constraining possible realistic solutions within General Relativity is…William A. Hiscock·Nov 27, 2002SaveLearn
Intermittency, scaling and the Fokker-Planck approach to fluctuations of the solar wind bulk plasma parameters as seen by the WIND spacecraftThe solar wind provides a natural laboratory for observations of MHD turbulence over extended temporal scales. Here, we apply a model independent method of differencing and rescaling to identify…Bogdan Hnat, Sandra C. Chapman, George Rowlands·Nov 18, 2002SaveLearn
Scaling of solar wind epsilon and the AU, AL and AE indicesWe apply the finite size scaling technique to quantify the statistical properties of fluctuations in AU, AL and AE indices and in the epsilon parameter that represents energy input from the solar…B. Hnat, S. C. Chapman, G. Rowlands et al.·Aug 6, 2002SaveLearn
Auroral field-aligned currents by incoherent scatter plasma line observations in the E regionThe aim of the Swedish-Japanese EISCAT campaign in February 1999 was to measure the ionospheric parameters inside and outside the auroral arcs. The ion line radar experiment was optimised to probe…Ingemar Haggstrom, Mikael Hedin, Takehiko Aso et al.·Jun 7, 2002SaveLearn
Updating the Near-Earth Neutral Line ModelIn the past thirty years the Near-Earth Neutral Line model for substorms has been proven to be correct in its basic assumption, i.e., that a new neutral line is created near the Earth during substorm…W. Baumjohann, R. Nakamura·Nov 19, 2001SaveLearn
Laboratory Modelling of the Earth Radiation BeltMethod of the laboratory modeling of the Earth radiation belt is presented. Method can be used for the estimation of consequences of global energetic and communication projects realizations.Alexander Luchinskiy, Yakov S. Shifrin·Nov 13, 2001SaveLearn
3-D extent of the main ionospheric trough--a case studyThe EISCAT radar system has been used for the first time in a four-beam meridional mode. The FAST satellite and ALIS imaging system is used in conjunction to support the radar data, which was used to…M. Hedin, I. Häggström, A. Pellinen-Wannberg et al.·Nov 12, 2001SaveLearn
Gravitational Radiation and its Application to Space Travel, principles and required scientific developmentsGravitational radiation is an elusive form of radiation predicted by general relativity, it is the subject of intense theoretical and experimental research at the limit of the sensitivity of today's…Giorgio Fontana·Oct 15, 2001SaveLearn
Preferential Acceleration of Coherent Magnetic Structures and Bursty Bulk Flows in Earth's MagnetotailObservations indicate that the magnetotail convection is turbulent and bi-modal, consisting of fast bursty bulk flows (BBF) and a nearly stagnant background. We demonstrate that this observed…Tom Chang, Cheng-chin Wu, Vassilis Angelopoulos·Jun 28, 2001SaveLearn
Alfven Wave Generation by means of High Orbital Injection of Barium Cloud in MagnetosphereAn analysis of the Alfven wave generation associated with the barium vapor release at altitudes ~ 5.2 Earth's radii (ER) in the magnetosphere is presented. Such injections were executed in G-8…V. N. Oraevsky, Yu. Ya. Ruzhin, V. I. Badin et al.·Jan 5, 2001SaveLearn
Anomalous Resistance in Critical Ionization Velocity PhenomenaTo describe the generation of the electric field by a discontinuity of the Hall current, an equation of the third order is obtained using the electric charge conservation and Ohm laws. The solutions…V. I. Badin·Jan 3, 2001SaveLearn
Determination of meteor showers on other planets using comet ephemeridesMeteor showers on the Earth occur at well known times, and are associated with the decay of comets or other minor bodies whose orbital paths pass close to the Earth's trajectory. On the surface,…Shane L. Larson·Dec 4, 2000SaveLearn
Particle Propagation Upstream of CIR ShocksThe first high solar latitude pass of the Ulysses spacecraft revealed the presence of MeV particle increases up to latitudes above 60 degrees, well outside the CIR belt but associated in time with…M. Savopulos, J. J. Quenby, M. K. Joshi et al.·Nov 28, 2000SaveLearn
Average observed properties of the Earth's quasi-perpendicular and quasi-parallel bow shockWe present a statistical analysis of 132 dayside (LT 0700-1700) bow shock crossings of the AMPTE/IRM spacecraft. We perform a superposed epoch analysis of plasma and magnetic field parameters as well…A. Czaykowska, T. M. Bauer, R. A. Treumann et al.·Sep 13, 2000SaveLearn
Mirror modes: Nonmaxwellian distributionsWe perform direct analysis of mirror mode instabilities from the general dielectric tensor for several model distributions, in the longwavelength limit. The growth rate at the instability threshold…M. Gedalin, Yu. E. Lyubarsky, M. Balikhin et al.·Sep 13, 2000SaveLearn
Rotatable-Torsion-Balance Equivalence Principleexperiment for the Spin-Polarized Hofe3We use a rotatable torsion balance to perform an equivalence principle test on a magnetically shielded spin-polarized body of HoFe3. With a rotation period of one hour, the period of possible…Li-Shing Hou, Wei-Tou Ni·Sep 4, 2000SaveLearn
Test of Cosmic Spatial Isotropy for Polarized Electrons Using a Rotatable Torsion BalanceTo test the cosmic spatial isotropy, we use a rotatable torsion balance carrying a transversely spin-polarized ferrimagnetic Dy6Fe23 mass. With a rotation period of one hour, the period of…Li-Shing Hou, Wei-Tou Ni, Yu-Chu M. Li·Sep 4, 2000SaveLearn
Enhanced Phase Space Diffusion due to Chaos in Relativistic Electron- Whistler Mode Wave Particle Interactions in Planetary MagnetospheresThe chaotic interaction between electrons and whistler mode waves has been shown to provide a mechanism for enhanced diffusion in phase space. Pitch angle diffusion is relevant for the scattering of…W J Wykes, S. C. Chapman, G. Rowlands·Jun 27, 2000SaveLearn
Enhanced Pitch Angle Diffusion due to Electron-Whistler Interactions during Disturbed TimesDuring periods of increased magnetospheric activity, whistler wave emissions have been observed with increased wave amplitudes. We consider a pitch angle diffusion mechanism that is shown to scale…W Wykes, S C Chapman, G Rowlands·Jun 27, 2000SaveLearn
What Dimensions Do the Time and Space Have: Integer or Fractional?A theory of time and space with fractional dimensions (FD) of time and space (dα, α=t, r) defined on multifractal sets is proposed. The FD is determined (using principle of minimum the…Leonid Ya. Kobelev·Jan 17, 2000SaveLearn
Modeling of Liquid Water on CM Meteorite Parent Bodies and Implications for Amino Acid RacemizationWe have constructed an asteroid model with the intent of tracking the radial and temporal dependence of temperature and composition throughout a 100-km diameter CM-type parent body, with emphasis on…Barbara A. Cohen, Robert F. Coker·Nov 15, 1999SaveLearn
UN/ESA Workshops on Basic Space Science: An Update on Their AchievementsDuring the second half of the twentieth century, expensive observatories are being erected at La Silla (Chile), Mauna Kea (Hawai), Las Palmas (Canary Island), and Calar Alto (Spain), to name a view.…H. J. Haubold·Oct 27, 1999SaveLearn
Identifying nonlinear wave interactions in plasmas using two-point measurements: a case study of Short Large Amplitude Magnetic Structures (SLAMS)A framework is described for estimating Linear growth rates and spectral energy transfers in turbulent wave-fields using two-point measurements. This approach, which is based on Volterra series, is…T. Dudok de Wit, V. V. Krasnosel'skikh, M. Dunlop et al.·Jun 30, 1999SaveLearn
Ionospheric HF pump wave triggering of local auroral activationExperimental results from Tromso HF pumping experiments in the nightside auroral E region are reported. We found intriguing evidence that a modification of the ionosphere-magnetosphere coupling, due…N. F. Blagoveshchenskaya, V. A. Kornienko, T. D. Borisova et al.·Jun 29, 1999SaveLearn
Solar wind acceleration by the dissipation of Alfven wavesAxford and McKenzie [1992] suggested that the energy released in impulsive reconnection events generates high frequency Alfvén waves. The kinetic equation for spectral energy density of waves is…A. A. Galeev A. M. Sadovski·Feb 8, 1999SaveLearn