ELFT HÍRADÓ

[StatFizSzeminar <statfiz AT glu.elte.hu>]

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             ELTE TTK Fizikai Intézet
          STATISZTIKUS FIZIKAI SZEMINÁRIUM

 
                   2017. december 6.
                    szerda, 11.00 

  
                    Regős Enikő 
   
                     MTA CSFK


     "Cosmic mass distribution from gravitational 
            lensing with Space Telescope: 
         Testing the cosmological paradigm"

We examine the inner mass distribution of galaxy clusters
in deep Hubble Space Telescope imaging taken as part of the
Cluster Lensing And Supernova survey with Hubble (CLASH) 
multi-cycle treasury program, to study the dark matter dis-
tribution in 25 massive clusters. We present a strong-lens-
ing analysis to identify multiply lensed images (arcs) to 
constrain the mass profile, and derive critical curves and
Einstein radii. From the current understanding of structure
formation in Lambda Cold Dark Matter cosmology, the derived
concentration - mass relation of dark matter is relatively 
high, combining weak and strong gravitational lensing.
 
     1117, Budapest, Pázmány P. sétány 1/A, Északi tömb 2.54
                honlap: http://glu.elte.hu/~statfiz

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