Institute of Astronomy

The skeleton: connecting galaxy formation to large scale structures

SpeakerTalk DateTalk Series
Christophe Pichon, Institut d'astrophysique de Paris/ Leverhulme visiting professor (Oxford)18 November 2010Institute of Astronomy Colloquia


I will report on morphological estimators of the filamentary structure
of the Cosmic Web, the so-called skeleton. Based on a global study of
the matter density gradient flow, it allows us to study the connectivity
between a density peak and its surroundings, with direct relevance to
the anisotropic accretion via cold flows on galactic halos. It also
provides a theoretical framework to study their cosmic evolution through
the onset of gravity-induced non-linearities.


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