Friday, April 5, 2013

1304.1412 (Nicolas Dorville et al.)

Rotational/ Compressional nature of the Magnetopause: application of the BV technique on a magnetopause case study    [PDF]

Nicolas Dorville, Gérard Belmont, Laurence Rezeau, Roland Grappin, Alessandro Retinò
The magnetopause boundary implies two kinds of variations: a density/ temperature gradient and a magnetic field rotation. These two kinds are always observed in a close vicinity of each other, if not inseparably mixed. We present a case study from the Cluster data where the two are clearly separated and investigate the natures of both layers. We evidence that the first one is a slow shock while the second is a rotational discontinuity. The interaction between these two kinds of discontinuities is then studied with the help of 1,5-D magnetohydrodynamics simulations. The comparison with the data is quite positive and leads to think that most of the generic properties of the magnetopause may be interpreted in this sense.
View original:

No comments:

Post a Comment