Optimal constraints on Primordial non-Gaussianity with the eBOSS DR16 quasars in Fourier space

2023/09/27 by M. S. Cagliari, Cagliari, Marina S., Emanuele Castorina +5 · 6 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena

paper · pdf · doi:10.48550/arxiv.2309.15814

openalex publication_date 2023/09/27 · openalex created_date 2023/09/30 · openalex updated_date 2026/07/28

Abstract

We present constraints on the amplitude of local Primordial Non-Gaussianities (PNG), f_{\rm NL}, using the quasar sample in the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey Data Release 16. We analyze the power spectrum monopole, testing for the presence of scale dependent galaxy bias induced by local PNG. Our analysis makes use of optimal redshift weights that maximize the response of the quasar sample to the possible presence of non zero PNG. We find -4

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