Speaker
Bartolomeo Bottazzi Baldi
(Università degli Studi di Padova)
Description
Our peculiar velocity imprints a dipolar signal on the large-scale clustering of galaxies. This effect leaves a distinctive oscillatory pattern on the power spectrum multipoles of galaxy clustering, which we refer to as FOTO effect (Finger Of The Observer). By performing a boosting technique on a galaxy catalog, we are able to use exploit this signature to constrain the magnitude and direction of our peculiar velocity from measurements of the large-scale power spectrum multipoles. Using mock galaxy catalogues created via the LIGER method, we measure the constraining power of the boosted SKAO1 and SKAO2 FOTO signals on our peculiar velocity. In particular, we showcase the improvement gained by using deeper and thicker redshift bins.
| Topics | Cosmology |
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Authors
Bartolomeo Bottazzi Baldi
(Università degli Studi di Padova)
Dr
Daniele Bertacca
(Dipartimento di Fisica e Astronomia "Galileo Galilei" Universita' degli Studi di Padova)
Dr
Mohamed Yousry Elkhashab
