Space Science Reviews

, Volume 87, Issue 1, pp 133–136

On the Stability of Siphon Flows Confined in Coronal Loops

  • Rita Betta
  • Salvatore Orlando
  • Giovanni Peres
  • Salvatore Serio
Article

DOI: 10.1023/A:1005182503751

Cite this article as:
Betta, R., Orlando, S., Peres, G. et al. Space Science Reviews (1999) 87: 133. doi:10.1023/A:1005182503751

Abstract

We use a time-dependent hydrodynamic model to study the dynamics of siphon flows triggered by differences of pressure or heat deposition asymmetries between the two footpoints of a coronal loop. We show that steady pressure driven flows in a uniformly heated loop are unstable, whereas those driven by asymmetries in the heating function may be stable. We also show that, in these cases, relatively cool loops might be filled far above their static pressure scale height.

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • Rita Betta
    • 1
  • Salvatore Orlando
    • 2
  • Giovanni Peres
    • 3
  • Salvatore Serio
    • 1
    • 3
  1. 1.Osservatorio AstronomicoPalermoItaly
  2. 2.ESA Solar System Division, Space Science Dept.ESTEC (SO)NoordwijkThe Netherlands
  3. 3.Dipartimento di Scienze Fisiche e Astronomiche, Sezione di AstronomiaUniversità di PalermoPalermoItaly

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