Dark Energy & the Cosmic Expansion

TUE, DEC 14, 2021 (38:38)

Arjun Dey is a core member of the Dark Energy Spectroscropic Instrument (DESI) survey project, the largest cosmic cartography project ever undertaken. DESI will provide the most precise measurements to date of the expansion history of the universe and the role of dark energy. In this program, Dr. Dey discusses the enigma of dark energy and the accelerating expansion of the universe, the scope of the DESI project, and the broad impact it will have on astrophysics and cosmology.

+ BIO: Arjun Dey

Arjun Dey, Ph.D., Astronomer NSF National Optical-Infrared Astronomy Research Laboratory (NOIRLab) J.S. Guggenheim Fellow, 2021; member, Dark Energy Spectroscopic Instrument (DESI) project. Arjun Dey’s research focuses on how galaxies form and evolve, and what they can tell us about the mysterious, invisible contents of the universe: dark matter and dark energy. One of his early projects uncovered the first galaxy observed at a redshift greater than 5 (i.e., with a light travel time of more than 12.5 billion years). He is a core member of the Dark Energy Spectroscropic Instrument (DESI) survey project, the largest cosmic cartography project ever undertaken.

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