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Cosmology from galaxy phase-space information and a bit of halo-galaxy connection

Natali de Santi (Flatiron Institute and University of Sao Paulo)
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Online (only)
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In this talk, I will give an overview of how to do field-level likelihood-free inference with galaxy catalogs.
More specifically, only using phase-space information, I will show how to convert galaxy catalogs into graphs.
I will explain how to use graph neural networks, associated with moment neural networks, to constrain Omega matter.

Maurício Richartz visit

Prof. Maurício Richartz, from ABC Federal University, State of São Paulo, Brazil, visited Gr@v in March-April 2023, to discuss analogue models of gravity and other topics. Thank you for your visit Maurício and see you soon!