Now showing items 1-6 of 6

  • 3D MHD flux emergence experiments: idealised models and coronal interactions: 

    Hood, Alan W.; Archontis, Vasilis; MacTaggart, David (Springer Verlag, 2012)
    This paper reviews some of the many 3D numerical experiments of the emergence of magnetic fields from the solar interior and the subsequent interaction with the pre-existing coronal magnetic field. The models described ...
  • Can magnetic breakout be achieved from multiple flux emergence? 

    MacTaggart, David; Hood, Alan W. (EDP Sciences, 2009-07)
    Aims. We study the breakout model using multiple flux emergence to produce the magnetic configuration and the trigger. We do not impose any artificial motions on the boundaries. Once the original flux tube configuration ...
  • Multiple eruptions from magnetic flux emergence 

    MacTaggart, David; Hood, Alan W. (EDP Sciences, 2009-12)
    Aims. In this paper we study the effects of a toroidal magnetic flux tube emerging into a magnetized corona, with an emphasis on large-scale eruptions. The orientation of the fields is such that the two flux systems are ...
  • On signatures of twisted magnetic flux tube emergence 

    Vargas Domínguez, Santiago; MacTaggart, David; Green, Lucie; van Driel-Gesztelyi, Lidia; Hood, Alan W. (Springer Verlag, 2012)
    Recent studies of NOAA active region 10953, by Okamoto et al. (Astrophys. J. Lett. 673, 215, 2008; Astrophys. J. 697, 913, 2009), have interpreted photospheric observations of changing widths of the polarities and reversal ...
  • On the emergence of toroidal flux tubes: general dynamics and comparisons with the cylinder model 

    MacTaggart, David; Hood, Alan W. (EDP Sciences, 2009-11)
    Aims. In this paper we study the dynamics of toroidal flux tubes emerging from the solar interior, through the photosphere and into the corona. Many previous theoretical studies of flux emergence use a twisted cylindrical ...
  • Simulating the "sliding doors" effect through magnetic flux emergence 

    MacTaggart, David; Hood, Alan W. (American Astronomical Society/Institute of Physics, 2010-06)
    Recent Hinode photospheric vector magnetogram observations have shown that the opposite polarities of a long arcade structuremove apart and then come together. In addition to this “sliding doors” effect, orientations of ...