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Mark Siewert (Argelander-Institut f. Astronomie Bonn)

IBEX, Voyager and the outer heliosphere
Wann Am 21.05.2014 von 11:00 bis 12:00
Was
  • Special Seminar
  • Kolloquium
Wo SH, Hörsaal
Termin übernehmen vCal / iCal

In the past decade, most of what we knew about the outer heliosphere has been put into doubt. Observations of outer heliospheric plasmas and magnetic fields by the IBEX and the Voyager missions demonstrated many nontrivial properties that until then had been absent from theoretical and numerical modeling. New models are currently being developed, aiming to describe the multicomponent solar wind termination shock, plasma flows in the inner and outer heliosheath, and also the heliopause.

I give an overview of the current state of the modeling progress, and present multiple aspects of the problem where current progress is still lacking. These aspects include the geometry and the boundary conditions of the inner heliosheath, i.e. the solar wind termination shock and the so-called heliocliff, which might consist of a nonideal heliopause.