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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 261 (1976), S. 394-395 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It is well known that the interplanetary magnetic field divides into two or four clearly-defined sectors3, the field in each sector having a constant average sense, towards or away from the Sun. If the fine-scale structure of the photospheric field is ignored, the average field shows large unipolar ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Earth and Planetary Sciences 4 (1976), S. 159-185 
    ISSN: 0084-6597
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 365 (1993), S. 19-20 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - The observed flat rotation curves of spiral galaxies constitute one of the most important facts suggesting the existence of large amounts of so-called dark matter in the Universe. However, if the galactic gas could be held in equilibrium by forces other than gravity alone, then an impor-tant ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 378 (1995), S. 592-595 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A lightning discharge occurs when the ambient electric field grows strong enough (the 'breakdown field') that a significant fraction of electrons acquire enough energy in a mean free path (Ae) to ionize a molecule in the atmosphere. This leads to a self-perpetuating electron cascade when energy ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 276 (1978), S. 481-481 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Solar System is generally thought to have formed from the collapse of gaseous interstellar matter which, because of the system's angular momentum, settled into a disk shaped nebula. Several models to describe the evolution of such a nebula have been computed6-10. While these models are not ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 265 (1977), S. 664-664 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] LEVY REPLIES-The suggestion put forward by Schatten and Wilcox1, that the solar-magnetic-cycle wave in the diurnal variation of energetic cosmic rays results from alternating connection and disconnection of the interplanetary and galactic magnetic fields, is an interesting one that deserves ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 264 (1976), S. 423-424 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Several processes contribute to the charging of grains in space. The ejection of photoelectrons and the accretion of ions tends to charge the grains positively, while the accretion of electrons produces a negative charge. Since the cross section for the accretion of charged particles depends on the ...
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Solar physics 135 (1991), S. 261-274 
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Magnetic buoyancy is thought to play an important role in the dynamical behavior of the Sun's magnetic field in the convection zone. Magnetic buoyancy is commonly thought to cause inescapable rapid loss of toroidal flux from much of the convection zone, thereby suppressing effective operation of a solar dynamo. This paper re-examines the detailed character of magnetic buoyancy, especially as it is influenced by the magnetic field's effect on heat transport and temperature gradients in the convection zone. It is suggested that suppression of convective heat transport across strong magnetic flux tubes can alter the temperature within the tubes and can subdue, or even reverse, the effect of magnetic buoyancy.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Earth, moon and planets 67 (1994), S. 143-160 
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Planetary magnetic fields are thought to be generated by magnetohydrodynamic dynamos acting in the convecting, electrically conducting fluid cores of these cosmic bodies. Similar processes are believed to produce a wide variety of other cosmic magnetic fields, including the fields of the Sun and stars. At present, we understand the basic physical processes involved in dynamo magnetic field generation. However, a detailed understanding still eludes us both because of continuing uncertainty about planetary interior structures, properties, and fluid motions, and because of our still primitive capacity for dealing with the complex, nonlinear dynamical processes involved in the fully elaborated dynamo process.
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  • 10
    Publication Date: 1991-10-01
    Print ISSN: 0038-0938
    Electronic ISSN: 1573-093X
    Topics: Physics
    Published by Springer
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