Sergei Shandarin (Univ Kansas)

Tessellation Approaches to Analysis of Cosmic Web.
When Oct 19, 2012 from 10:30 AM to 12:00 PM
What
  • Colloquium
Where SH, Lecture hall
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The Cosmic Web discovered at the end of 20th century remains not fully understood even in cosmological N-body simulations where the full dynamical information is easily available. The majority of cosmologists probably would  agree that the web is made of four  distinct geometrical types of structure, ie.  relatively compact clusters, filaments, walls/pancakes, and nearly empty voids. However, they hardly agree on the fractions of mass and volume occupied by these structures. Although it seems paradoxical recent progress in studies of the structure of the Cosmic Web in six-dimensional phase space may help to better understand its geometry and topology in three-dimensional configuration space. I will discuss the novel method based on the tessellation of the phase space sheet of Dark Matter, new results and the future prospects.