Results 11 to 20 of about 11,697 (264)
Three-dimensional earthward fast flow in the near-Earth plasma sheet in a sheared field: comparisons between simulations and observations [PDF]
Annales Geophysicae, 2009 Three-dimensional configuration of earthward fast flow in the near-Earth plasma sheet is studied using three-dimensional magnetohydrodynamics (MHD) simulations on the basis of the spontaneous fast reconnection model.
K. Kondoh, M. Ugai
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The structure and dynamics of a large-scale plasmoid generated by fast reconnection in the geomagnetic tail [PDF]
Annales Geophysicae, 2011 As a sequence of Ugai (2010b), the present paper studies in detail the structure and dynamics of large-scale (principal) plasmoid, generated by the fast reconnection evolution in a sheared current sheet with no initial northward field component. The
M. Ugai
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Conditions for substorm onset by the fast reconnection mechanism [PDF]
Annales Geophysicae, 2008 The fast reconnection mechanism, involving slow shocks and Alfvénic fast plasma jets, is most responsible for the explosive conversion of magnetic energy associated with geomagnetic substorms and solar flares.
M. Ugai
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Magnetic field structure of large-scale plasmoid generated by the fast reconnection mechanism in a sheared current sheet [PDF]
Annales Geophysicae, 2010 On the basis of the spontaneous fast reconnection model, three-dimensional magnetic field profiles associated with a large-scale plasmoid propagating along the antiparallel magnetic fields are studied in the general sheared current sheet system.
M. Ugai
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Evolution of the cosmic web [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 The cosmic web is the largest scale manifestation of the anisotropic gravitational collapse of matter. It represents the transitional stage between linear and non-linear structures and contains easily accessible information about the early phases of structure formation processes.
Cautun, Marius +3 more
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Virtual satellite observations of plasmoids generated by fast reconnection in the geomagnetic tail [PDF]
Annales Geophysicae, 2011 The present paper studies fundamental features of plasmoid propagation by virtual satellite observations in the simulation box. The plasmoid domain is divided into the plasmoid reconnection region P, where magnetized plasmas with reconnected field ...
M. Ugai
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The Cosmic Evolution of Quasars [PDF]
Highlights of Astronomy, 2005 AbstractThe form of the quasar luminosity function and its redshift dependence to z~1 has long been established; powerful evolution is required so that by z=1 there is an increase of order 102 – 103 in the space density of the most luminous sources. However it is more difficult to deduce the form of the LF at high redshifts.
Jackson, C +4 more
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Energy Budgets of Evolving Nations and Their Growing Cities
Energies, 2022 A new way is proposed to thermodynamically gauge the evolving complexity of nation-states and their growing cities. Energy rate density is a useful metric to track the evolution of energy budgets, which help facilitate how well or badly human society ...
Eric J. Chaisson
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HTS Teologiese Studies/Theological Studies, 2021 Science, technology, commerce and consumerism have set humankind on a trajectory towards a catastrophe of inestimable proportions. To respond appropriately to this danger, theology must replace obsolete contextualisations of its message with currently ...
Klaus B. Nürnberger
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Evolution of cosmic strings [PDF]
Physical Review D, 1986 The evolution of a system of cosmic strings is studied using an extended version of an analytic formalism introduced by Kibble. It is shown that, in a radiation-dominated universe, the fate of the string system depends sensitively on the fate of the closed loops that are produced by the interactions of very long strings.
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