Local models of warped astrophysical discs

Series: 
Astronomy Unit Seminars
Speaker: 
Dr Sijme-Jan Paardekooper (QMUL)
Host: 
David Tsiklauri
Date: 
November 22nd, 2013 at 14:30
Room: 
Queens EB2
Abstract: 

Numerical simulations of accretion discs have greatly benefited from the 'shearing box' formalism, where, instead of the whole disc, only a local (shear-) periodic patch of the disc is considered. This approach has recently been extended to include the presence of a warp in the disc, which allows for a local study of of warped astrophysical discs. Using this approach, it is found that warped discs are in fact hydrodynamically unstable. I will present numerical simulations of this instability and discuss its importance for astrophysical discs.

Linkshttp://www.damtp.cam.ac.uk/people/s.paardekooper/