Ruprecht Karls Universität Heidelberg

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 == 11th July 2018: Selected topics in theory and observations of Dark Energy (Tunch) == == 11th July 2018: Selected topics in theory and observations of Dark Energy (Tunch) ==
  
-Akshay Rana-  TBA+Akshay Rana (University of Delhi, India)"Novel ways to constrain Graviton mass and spatial curvature"​ 
 + 
 +In cosmology, it always remains a topic of great interest to constrain cosmological parameters 
 +by using different approaches and observational probes to confirm their consistency. In the same 
 +direction, I will present two novel ways that can be used to limit the mass of the Graviton and the spatial 
 +curvature of the space. My talk will be focused on two different aspects of present precision cosmology,​ 
 + 
 +1) Firstly, I will discuss about the graviton, which is a massless particle in GR while considered to be 
 +massive in some alternative models of GR like; Massive gravity theories. I will present a novel 
 +approach that can be used to put stringent constraints on its mass using galaxy clusters. 
 + 
 +2) Similarly, the estimation of spatial curvature of the Universe is also one of the most fundamental 
 +issue of modern cosmology. I will discuss a model-independent approach to test the curvature of 
 +space by using statistical features of strong gravitational lensing.
  
  

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