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Numerical simulation of jetstreams

I: The three-dimensional case

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Abstract

The dynamics of jetstreams have been studied by following the evolution of a simulation particle population. The self-gravitational field of the stream has been neglected, the individual small bodies interacting through hard, partially inelastic collisions only, no fragmentation or accreaction taking place. The chosen collision model — the beta-model — is given by Equation (4). The collisions will quickly establish a Rayleigh distribution of both eccentricities and inclinations, the average amplitude of the oscillations associated with eccentricity being up by approximately a factor √2. The velocity distribution inside the stream is highly non-Maxwellian. If the collisions are sufficiently inelastic, the stream is focused, the individual orbits becoming more and more circular (for azimuthally symmetric streams) and ecliptic. In the opposite case the collisions destroy the stream configuration rapidly. The beta collisional model is unable to produce any radial focusing.

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References

  • Alder, B. J. and Wainwright, T. E.: 1959,J. Chem. Phys. 31, 459.

    Google Scholar 

  • Alder, B. J. and Wainwright, T. E.: 1960,J. Chem. Phys. 33, 1439.

    Google Scholar 

  • Alfvén, H.: 1969,Astrophys. Space Sci. 4, 84.

    Google Scholar 

  • Alfvén, H.: 1972, in Chebotarevet al. (eds.), ‘The Motion, Evolution of Orbits, and Origin of Comets’,IAU Symp. 45, 485.

    Google Scholar 

  • Alfvén, H. and Arrhenius, G.: 1970a,Astrophys. Space Sci. 8, 338.

    Google Scholar 

  • Alfvén, H. and Arrhenius, G.: 1970b,Astrophys. Space Sci. 9, 3.

    Google Scholar 

  • Arnold, J. R.: 1969,Astron. J. 74, 1235.

    Google Scholar 

  • Baxter, D. and Thompson, W. B.: 1971, ‘Jetstream Formation through Inelastic Collisions’,IAU Coll., No. 12,Physical Studies of Minor Planets, Tucson, March 8–10, 1971.

  • Cramér, H.: 1956,Sannolikhetskalkylen, Almquist and Wiksells, Stockholm.

    Google Scholar 

  • Danielsson, L.: 1969,Astrophys. Space Sci. 5, 53.

    Google Scholar 

  • Gehrels, T.: 1972, in Elvius (ed.), ‘From Plasma to Planet’,Nobel Symp. 21, 169.

    Google Scholar 

  • Lindblad, B. A.: 1970,Smithsonian Contrib. Astrophys.

  • Trulsen, J.: 1971,Astrophys. Space Sci. 12, 329.

    Google Scholar 

  • Trulsen, J.: 1972, in Chebotarevet al. (eds.), ‘The Motion, Evolution of Orbits, and Origin of Comets’,IAU Symp. 45, 487.

    Google Scholar 

  • Trulsen, J.: 1972,Astrophys. Space Sci., in press.

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  1. University of Tromsø, Tromsø, Norway

    Jan Trulsen

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  1. Jan Trulsen
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Trulsen, J. Numerical simulation of jetstreams. Astrophys Space Sci 17, 241–262 (1972). https://doi.org/10.1007/BF00642555

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  • DOI: https://doi.org/10.1007/BF00642555

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