Christophe Gay

The Skeleton: Connecting Large Scale Structures to Galaxy Formation (2009)

Pichon, Christophe, Gay, Christophe, Pogosyan, Dmitry, Prunet, Simon, Sousbie, Thierry, Colombi, Stephane, ...

We report on two quantitative, morphological estimators of the filamentary structure of the Cosmic Web, the so-called global and local skeletons. The first, based on a global study of the matter...

The invariant joint distribution of a stationary random field and its derivatives: Euler characteristic and critical point counts in 2 and 3D (2009)

Pogosyan, Dmitri, Gay, Christophe, Pichon, Christophe

The full moments expansion of the joint probability distribution of an isotropic random field, its gradient and invariants of the Hessian is presented in 2 and 3D. It allows for explicit expression...