Mehdi Rezaie

Department of Physics, Kansas State University

Handling Observational Challenges in the era of Big Data Cosmology

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 and for exploring the impact of observational effects on Baryon Acoustic Oscillations measurements. Finally, I conclude with my ongoing work within the Dark Energy Spectroscopic Instrument (DESI).

یکشنبه 3 بهمن 1400، ساعت 19:00

Sunday 23 January 2022 – 19:00 Tehran Time

اتاق سمینار مجازی –Virtual Seminar Room

https://vc.sharif.edu/ch/cosmology

گزینه ورود به صورت مهمان – Enter as a Guest