INTER-UNIVERSITY  CENTRE  FOR  ASTRONOMY  AND  ASTROPHYSICS
(An Autonomous Institution of the University Grants Commission)

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  SEMINAR

 

DR. MARCELLO MUSSO

MPA Garching, Germany
 
Excursion sets, peaks and other creatures: Improved analytical models of LSS
 
 

The speaker will present recent developments in the analytical methods to predict abundance, clustering and bias of Dark Matter halos. In the standard analytical approach, halos are identified either with sufficiently high peaks of the matter density field, or with the largest spheres enclosing a sufficiently high density. He will revise the physical assumptions leading to this standard picture, and show how a careful statistical implementation of the model of collapse (even in the simple spherically symmetric case) leads to a surprisingly rich structure. This allows to make simple - yet remarkably accurate - analytical predictions for halo statistics, a necessary ingredient on the road to precision cosmology.

 
IUCAA Lecture Hall, Bhaskara 3
May 3, 2017, 16:00 hrs.