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  • 1
    Monograph available for loan
    Monograph available for loan
    Cosmic electrodynamics (1958)
    Cambridge : Cambridge Univ. Pr.
    Details Availability
    Call number: 3131
    Type of Medium: Monograph available for loan
    Pages: IX, 183 S.
    Series Statement: Cambridge monographs on mechanics and applied mathematics
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    A Theoretical Model for Arches in the Solar Corona (1953)
    [s.l.] : Nature Publishing Group
    Nature 171 (1953), S. 618-618 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The simple model has been studied in which (i) the temperature and composition of the atmosphere are uniform ; (ii) the gravitational field is uniform, the z-axis pointing upwards ; and (iii) the magnetic field is two-dimensional, that is, Hy = 0 ; dPIx/dy = dHzfdy = 0 ; the current density j then ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/171618a0
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  • 3
    Electronic Resource
    Electronic Resource
    Derivation of the Dispersion Equation for Alfvén's Magneto-Hydrodynamic Waves from Bailey's Electromagneto-Ionic Theory (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 1029-1030 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Bailey2 has given a general theory of plane waves in an ionized gas, including the effect of static electric and magnetic fields, which is valid so long as the amplitude is sufficiently small. Consequently, some of his solutions should correspond to Alfv ns waves. This is verified here. Since the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1671029a0
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  • 4
    Electronic Resource
    Electronic Resource
    Origin of Cosmic Rays (1948)
    [s.l.] : Nature Publishing Group
    Nature 162 (1948), S. 888-888 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is important to decide whether or not the main sources of the cosmic ray particles are external to our galaxy. An external source seems, at first sight, to be established by the observed isotropy of the cosmic rays incident on the earth. But it has been claimed by a number of authors that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/162888a0
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  • 5
    Electronic Resource
    Electronic Resource
    Magnetospheric physics (1978)
    [s.l.] : Nature Publishing Group
    Nature 276 (1978), S. 740-740 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE title of this book emphasises the use of geomagnetic data from instruments at ground level for sensing dynamic phenomena occurring far out in the magnetosphere. The value of such observations is also stressed in the preface, and the preface explains that the pursuit of this theme has evolved ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/276740b0
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  • 6
    Electronic Resource
    Electronic Resource
    Theories of Magnetic Storms and Auroræ (1952)
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 795-795 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This approach leads to a criticism of that aspect of the theories mentioned which concerns the acceleration of the auroral particles; the acceleration of these particles gives rise to a 'back effect' which has not been taken into account by Alfv n or Martyn. In both theories the auroral particles ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/170795a0
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  • 7
    Electronic Resource
    Electronic Resource
    Neglected Plasma Instability involving Bounce Resonance (1968)
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 56-57 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The waves generated are described by the linearized hydromagnetic equations. In meridian planes they are standing waves, but their phase varies rapidly with longitude. It is convenient to represent this phase dependence by eim, where j is longitude, and Dungey2 showed that, when m, the wave ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/219056a0
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  • 8
    Electronic Resource
    Electronic Resource
    Ultra low frequency waves in the magnetosphere (1970)
    Springer
    Space science reviews 10 (1970), S. 672-688 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The behaviour of continuous pulsations pc 2–5 observed on the ground has been known for some time. They seldom occur at night, their amplitudes generally increase towards the auroral zones and the sense of rotation of their polarisation often agrees with surface waves on the magnetopause. Recently ULF sonagrams for middle latitudes have shown systematic behaviour and dominant periods. Theoretical study of normal modes for symmetrical models is also well established. If the wave depends on longitude φ like e imφ , modes with large m are quasi-transverse and these are likely to be excited and will be emphasised. The Kelvin-Helmholtz instability has recently been studied in a general formulation. For given fields and plasma properties on both sides of the boundary, a plot of critical wind speed against the direction of the wave fronts shows a cusp, meaning that for most directions of the wind the onset of instability will correspond to the cusp and the nature of the waves can be predicted from this. Almost circularly polarised waves are predicted confirming an earlier heuristic suggestion. Magnetic data from Explorer 33 shows rather irregular disturbance near the magnetopause, but an integration designed to show the sense of rotation of the polarisation shows clear agreement. The disturbance outside the magnetopause also shows the predicted polarisation, indicating that a substantial part of it must be due to surface waves, whereas previously it was believed to be the turbulence of the magnetosheath. Bounce resonance has also been invoked to excite ULF waves, particularly those observed at the geostationary orbit, which may also correspond to pg at the ground. They are remarkably regular and quite strictly transverse, suggesting large m. Energetic particles may then see a higher frequency as a result of their drift. A simple picture of the exchange of energy is obtained using a frame rotating with the wave and it is seen that the wave can be driven by a spatial gradient in the energetic particles. The most important mechanism is due to the tilting of the field lines and the growth rate can be large. The reflection by the ionosphere requires further study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00171551
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  • 9
    Electronic Resource
    Electronic Resource
    Effects of electromagnetic perturbations on particles trapped in the radiation belts (1965)
    Springer
    Space science reviews 4 (1965), S. 199-222 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00173882
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  • 10
    Electronic Resource
    Electronic Resource
    Neutral sheets (1975)
    Springer
    Space science reviews 17 (1975), S. 173-180 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract With the growth of recognition of the importance of neutral sheets, the complexity of the subject has become apparent. Although the crucial problem concerns the vicinity of a neutral line, where the normal componentB z may be neglected, only a small fraction of satellite crossings can be expected in such a small region. The breakdown of the problem will be discussed and possible trajectories described for particles entering from either the lobes or the magnetosheath. In each region a self-consistent problem must be solved for the electrostatic field and it is noted that this can drive field aligned currents to the ionosphere. High frequency instabilities will also be discussed and seem capable of causing the explosive onset of substorms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00718571
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