Unraveling outstanding questions in cosmology by mapping the universe in 3D

by Satya Gontcho A Gontcho (LBNL)

Monday 11 Mar 2024, 11:00 → 12:00 America/Los_Angeles

51/3-305 - Kavli 3rd Floor (SLAC)

 

The field of cosmology has benefited tremendously from large scale imaging and spectroscopic facilities and the synergies between them. Such facilities are, and over the next decade will continue to be, crucial in probing important questions in cosmology. By providing the largest maps of the observable universe to date these facilities enable us to study the accelerated expansion of the universe during late times (everything in the past 12.2 billion years), its initial conditions and their effects on a period of cosmic inflation that happened immediately following the Big Bang, and the perceived conflicts between observations probing the early universe (13.7 billion years ago) and the late universe. In this talk, I will first discuss the current status of our efforts to constrain the expansion history of the universe at redshifts z>2 (i.e., over 10.4 billion years ago) with the Dark Energy Spectroscopic Instrument. Then, I will highlight some exciting opportunities to investigate the nature of inflation with upcoming spectroscopic surveys by harnessing the wealth of data provided by their imaging counterparts.

 

Slides     Zoom recording.  (the seminar begins at 00:05:20 )

 

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