[GTP] GTP HAO seminar--Cancellation

[Silvia Gentile]

Dear All,

The GTP HAO seminar by Dhrubaditya Mitra on June 1 has been canceled.

Thank you

Silvia Gentile
NCAR IMAGe
1850 Table Mesa Drive
Boulder, CO 803035
www2.image.ucar.edu/IMAGe




Silvia Gentile wrote:
> Joint GTP - HAO Special Seminar
> Breakdown of Parity in Hydromagnetic Instabilities
> NORDITA, Sweden
>
>
> Evidence for a parity-breaking nature of the magnetic buoyancy 
> instability in a stably stratified gas is reported. Such instabilities 
> are expected to play important role in possible emergence of magnetic 
> fluxtubes giving rise to observed magnetic behaviour of the sun.
> In the absence of rotation, no helicity is produced, but the 
> non-helical state is found to be unstable to small helical 
> perturbations during the development of the instability. The 
> parity-breaking nature of an instability in magnetohydrodynamics 
> appears to be the first of its kind and is similar to chiral symmetry 
> breaking in biochemistry.
> Such parity breaking nature may be universal in certain class of 
> hydromagnetic instabilities.
> Possible Ginzburg-Landau theory of such instabilities will also be 
> discussed.
>
> Ref :
> [1] Spontaneous chiral parity breaking by hydromagnetic buoyancy 
> (http://arxiv.org/abs/1011.1251v1)
> Piyali Chatterjee, Dhrubaditya Mitra, Axel Brandenburg, Matthias 
> Rheinhardt
> [2] Alpha effect due to buoyancy instability of a magnetic layer 
> (http://arxiv.org/abs/1011.1218v1)
> Piyali Chatterjee, Dhrubaditya Mitra, Matthias Rheinhardt, Axel 
> Brandenburg
>
>
> Wednesday, June 1, 2011
> Center Green Laboratory 1, North Auditorium
> Lecture at 3:30 pm
>
> Silvia Gentile
> NCAR IMAGe
>
>