SEMINAR REMINDER - SEMINARIO ECCEZIONALE - Today, Wedn. 24 January at 12:00 noon - Villa Bazzoni

[Gabriella Schiulaz]

I remind you of today's seminar at noon:

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                SEMINARIO ECCEZIONALE 
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Speaker: Pietro Greco (SISSA) 

Title: Prove tecniche di trasmissione. La comunicazione 
nell'era post-accademica della scienza 


Date: Wednesday, January 24th, 2007 
Time: 12:00 noon 
Venue: Villa Bazzoni (via Bazzoni, 2)
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Here is next scheduled seminar:

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OATS-DAUT SEMINAR 
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Speaker: Antonaldo Diaferio (Univ. di Torino) 

Title: Mass and Light in the Outskirts of Galaxy Clusters 

Date: Wednesday, January 31st, 2007 
Time: 12:00 noon 
Venue: Villa Bazzoni 

Abstract: 
Dark matter dominates the dynamics of cosmic structures. Quantifying the relative distribution of dark and luminous matter is a major challenge of modern cosmology. I will present the caustic technique, a method which uses the position and redshift of galaxies alone to measure the mass in the outer regions of clusters; here traditional methods, based on the assumption of dynamical equilibrium, do not hold. When applied to the CAIRNS survey and 72 more clusters extracted from the Sloan Digital Sky Survey (the CIRS survey), the caustic technique provides the largest sample of clusters whose mass profiles have been measured out to three times the virial radius. The universe matter density and the normalization of the power spectrum provided by the mass function of these clusters agree with the WMAP3 estimates. When combined with photometric and spectroscopic information, these cluster mass profiles can also provide relevant constraints on the models of galaxy formation in the transition region between the high-density cluster cores and the low-density field environment. 


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scheduled OAT seminars are also available on the page:
http://adlibitum.oats.inaf.it/seminari/


Gabriella Schiulaz
segreteria OAT
Phone: 040-3199241
schiulaz at oats.inaf.it
segreteria at oats.inaf.it