Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21640608v&link_type=abstract
American Astronomical Society, AAS Meeting #216, #406.08; Bulletin of the American Astronomical Society, Vol. 41, p.881
Astronomy and Astrophysics
Astronomy
Scientific paper
Magnetic clouds are commonly interpreted as manifestations of large interplanetary magnetic flux ropes. The flux ropes have a loop like shape, i.e., they are curved, and they are approximated by a toroidal shape in the present work. Magnetic clouds near Earth have impacts on geomagnetic activity, the strongest influence on the magnetosphere is usually caused by very fast, super-sonic clouds. To find a bow shock surface and magnetic field structure in the area between the bow shock and the cloud's boundary is a difficult task. Our approach to the problem is to set a priori a bow shock surface, which is determined by a number of parameters to be found when interpreting a given event. Then magnetic field is constructed from the following constrains: the normal component is continuous across the bow shock and absent on the boundary. Additionally, there is also a co-planarity condition to be fulfilled on the boundary. We shall show example calculations and interpretations.
Romashets Eugene
Vandas Marek
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