Altas Energías

# Proposal of local bias estimation for forward modeling Reconstruction in the BAO Peak analysis

## by Dr. Sebastien Fromenteau (Instituto de Ciencias Físicas, UNAM)

Wednesday, 2 March 2022 from to (Mexico/General)
at ICN-UNAM ( Seminario virtual vía Zoom )
Para detalles de conexión contactar a alexis@nucleares.unam.mx
 Description Cosmology infers the Universe's properties from astrophysical tracers statistics. However, theory allows us to model the compressed statistics (particularly the 2-pt correlation function and Power Spectrum) of the Cold Dark Matter while we observe ‘normal matter’ tracers like the galaxies. Due to the complexity of astrophysical processes, galaxies (and other objects) are biased and incomplete tracers of the Cold Dark Matter field. I will introduce the usual way this bias is treated before attempting to propose an alternative using a more astrophysical approach, allowing us to take into account a local information. Finally, I will give an example of a concrete application with the forward modeling of galaxy reconstruction in the Baryonic Acoustic Oscillations Peak measurement. Liga Zoom: https://cuaieed-unam.zoom.us/j/82622280628?pwd=c1R1UWpjbDdtM0RwYTNkK09kdmthdz09 Material: Support Email: alexis@nucleares.unam.mx