Threat Characterization: Trajectory DynamicsGiven a primary interest in "mitigation of the potential hazard" of near-Earth objects impacting the Earth, the subject of characterization takes on an aspect not normally present when…Russell Schweickart, Clark Chapman, Dan Durda et al.·Aug 15, 2006SaveLearn
Infrared Absorption Investigations Confirm the Extraterrestrial Origin of Carbonado-DiamondsThe first complete infrared FTIR absorption spectra for carbonado-diamond confirm the interstellar origin for the most enigmatic diamonds known as carbonado. All previous attempts failed to measure…Jozsef Garai, Stephen E. Haggerty, Sandeep Rekhi et al.·Aug 2, 2006SaveLearn
Persistence of small-scale anisotropy of magnetic turbulence as observed in the solar windThe anisotropy of magnetophydrodynamic turbulence is investigated by using solar wind data from the Helios 2 spacecraft. We investigate the behaviour of the complete high-order moment tensors of…Luca Sorriso-Valvo, Vincenzo Carbone, Roberto Bruno et al.·Jul 13, 2006SaveLearn
Plasma Depletion and Mirror Waves Ahead of Interplanetary Coronal Mass EjectionsWe find that the sheath regions between fast interplanetary coronal mass ejections (ICMEs) and their preceding shocks are often characterized by plasma depletion and mirror wave structures, analogous…Y. Liu, J. D. Richardson, J. W. Belcher et al.·Jul 4, 2006SaveLearn
Notes on the Dipole Coordinate SystemA strong magnetic field can make it advantageous to work in a coordinate system aligned with dipolar field lines. This monograph collect the formulas for some of the most frequently used expressions…M. Swisdak·Jun 5, 2006SaveLearn
Constraints on the Global Structure of Magnetic Clouds: Transverse Size and CurvatureWe present direct evidence that magnetic clouds (MCs) have highly flattened and curved cross section resulting from their interaction with the ambient solar wind. Lower limits on the transverse size…Y. Liu, J. D. Richardson, J. W. Belcher et al.·May 31, 2006SaveLearn
On-off Intermittence as a Possible Mechanism of Geomagnetic Impulse GenerationUsing the many-year observations at several high-latitude observatories in the Northern and Southern Hemispheres, the regularities in distribution of magnetic impulse events (MIEs) amplitudes are…B. I. Klain, N. A. Kurazhkovskaya, O. D. Zotov·May 23, 2006SaveLearn
Ion-aerosol interactions in the lower atmosphere of VenusAll planetary atmospheres are electrified to some extent by cosmic ray ionisation, and Venus is no exception. There is increasing awareness that ion-aerosol interactions could modulate terrestial…K. L. Aplin·May 9, 2006SaveLearn
Resolved Hubble Space spectroscopy of ultracool binary systemsUsing the low-resolution mode of the Space Telescope Imaging Spectrograph (STIS) aboard the Hubble Space Telescope (HST), we have obtained spatially resolved spectra of 20 ultracool dwarfs. 18…E. L. Martin, W. Brandner, H. Bouy et al.·May 4, 2006SaveLearn
Asymmetries in Mars' Exosphere: Implications for X-ray and ENA ImagingObservations and simulations show that Mars' atmosphere has large seasonal variations. Total atmospheric density can have an order of magnitude latitudinal variation at exobase heights. By…Mats Holmström·Apr 5, 2006SaveLearn
Comment on "A statistical comparison of solar wind sources of moderate and intense geomagnetic storms at solar minimum and maximum" by Zhang, J.-C., M. W. Liemohn, J. U. Kozyra, M. F. Thomsen, H. A. Elliott, and J. M. Weygand, JGR, 2006Conditions in the solar wind resulting in magnetic storms on the Earth are a subject of long and intensive investigations. Recently Zhang et al. (2006), published a paper, where they used superposed…Yu. I. Yermolaev, M. Yu. Yermolaev, I. G. Lodkina·Mar 29, 2006SaveLearn
Venus-Solar Wind Interaction: Asymmetries and the Escape of O+ IonsWe study the interaction between Venus and the solar wind using a global three-dimensional self-consistent quasi-neutral hybrid (QNH) model. The model treats ions (H+, O+) as particles and electrons…E. Kallio, R. Jarvinen, P. Janhunen·Mar 28, 2006SaveLearn
Possible correlation between cosmic ray variation and atmosphere parameters (present status and future activities at BEO Moussala and Alomar observatory)In this revue are presented several present activities and experiments at Alomar observatory and BEO Moussala and the possibility to investigate the influence of cosmic ray on climate parameters and…Alexander Mishev·Mar 8, 2006SaveLearn
Solar Wind Electric Fields in the Ion Cyclotron Frequency RangeMeasurements of fluctuations of electric fields in the frequency range from a fraction of one Hz to 12.5 Hz are presented, and corrected for the Lorentz transformation of magnetic fluctuations to…P. J. Kellogg, S. D. Bale, F. S. Mozer et al.·Feb 26, 2006SaveLearn
Geomagnetic storm dependence on the solar flare classContent. Solar flares are often used as precursors of geomagnetic storms. In particular, Howard and Tappin (2005) recently published in A&A a dependence between X-ray class of solar flares and Ap and…Yu. I. Yermolaev, M. Yu. Yermolaev·Jan 25, 2006SaveLearn
Simulation Study of a Positive Ionospheric Storm Phase Observed at Millstone HillSimulation results from the NRL ionospheric model SAMI2 indicate that the changes in the F-region over Millstone Hill during the geomagnetic storm beginning on 3 April 2004 are primarily due to the…M. Swisdak, J. D. Huba, G. Joyce et al.·Dec 14, 2005SaveLearn
Orbital Data Confirms Dynamic Fractal Firework Universe Having 3D-spiral CodeThe understanding of the universe is confused by the unknown nature of about 95% of its matter, required to confine the motions of space objects in cosmic structures. The idea of this paper is that…E. P. Savov·Dec 8, 2005SaveLearn
Analyze of multistage transfer orbit to reach the GEO orbit in a rotational symmetric gravitational fieldPlacing satellites in geostationary obital (GEO) is propellant exigeant. It requires large propellant consumption that will take a large part of the total mass. Hence the interest is reduce the mass…S. Ng·Nov 13, 2005SaveLearn
Multiscale behavior and fractional kinetics from the data of solar wind - magnetosphere couplingMultiscale phenomena are ubiquitous in nature as well in laboratories. A broad range of interacting space and time scales determines the dynamics of many systems which are inherently multiscale. In…G. M. Zaslavsky, P. N. Guzdar, M. Edelman et al.·Nov 11, 2005SaveLearn
Secular cycle of the north-south solar asymmetryThe North-South asymmetry of solar activity has been recognized for different solar phenomena. Following Waldmeier, it is now assumed that solar activity dominates in the Northern solar hemisphere…K. Georgieva, B. Kirov·Sep 23, 2005SaveLearn
Synthesis of scaling exponents: a fractional Levy modelMandelbrot introduced the concept of fractals to describe the non-Euclidean shape of many aspects of the natural world. In the time series context he proposed the use of fractional Brownian motion…N. W. Watkins, D. Credgington, B. Hnat et al.·Sep 7, 2005SaveLearn
Use of coated silicon field emitters as neutralisers for fundamental physics missions in spaceSpacecraft neutralisers are required as part of the ion propulsion system for accurate station keeping in fundamental physics missions. This paper describes the use of thin layers of insulating…K. L. Aplin, B. J. Kent, C. M. Collingwood et al.·Sep 5, 2005SaveLearn
Triangle for the entropic index q of non-extensive statistical mechanics observed by Voyager 1 in the distant heliosphereTsallis identified a set of numbers, the q-triplet, (qstat, qsen, qrel), for a system described by nonextensive statistical mechanics. The deviation of the q's from unity is a measure of the…L. F. Burlaga, A. F. -Vinas·Jul 29, 2005SaveLearn
Hypothetical Gravity Control and Possible Influence on Space PropulsionIn nearly all concepts invoked or proposed to change or shield gravity it is intuitively assumed that manipulation of gravity automatically leads to a breakthrough for propulsion. In this study it is…M. Tajmar, O. Bertolami·Jul 13, 2005SaveLearn
The Pattern of Solar Wind-Magnetosphere Interaction and Its UniversalityThe multi-scale expansions and contractions of the Earth's magnetosphere explain fundamental issues of magnetic storm-substorm relationship. This magnetospheric behavior is in agreement with a…Eugene Savov·Jun 14, 2005SaveLearn