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Handling Observational Challenges in the Era of Big Data Cosmology
Speaker
Mehdi Rezaie Kansas State University (Kansas, USA)
Abstract
During four distinct phases, the Sloan Digital Sky Survey (SDSS) collected images and spectra of thousands to millions of astronomical objects and created the largest three-dimensional map of the cosmic web to date. As part of SDSS-IV, the extended Baryon Oscillation Spectroscopic Survey (eBOSS) was the final galaxy redshift survey proposed to measure the expansion history and energy contents of the Universe. In this talk, I will present a careful assessment of observational challenges in the final sample of quasars from eBOSS. Then, I will briefly present accompanying studies using the same dataset for constraining the local-type primordial non-Gaussianity. Finally, I conclude with my ongoing work within the Dark Energy Spectroscopic Instrument (DESI).
Date and Time
October 26 2023 4pm KST (= 7am UTC) Zoom link (active once the seminar starts)