Professor Neelima Sehgal
Department of Physics and Astronomy
7:30 pm Room 001 ESS Building
Friday, April 5, 2013

Dark Energy and the Accelerating Universe

The evidence for Dark Energy is overwhelming. Already in the mid 1970s, astronomical data hinted at the possibility of an additional energy component in the Universe. This Dark Energy would accelerate the expansion rate of our Universe and counteract the pull of gravity. By the late 1990s, the evidence for Dark Energy became compelling when astronomers directly measured this accelerated expansion. Since then, the evidence for this energy component has been continually growing from measurements employing many independent techniques.

In this talk, I will review the evidence for Dark Energy and discuss how its existence raises even deeper questions about our Universe. I will then discuss the forefront of current research on Dark Energy and the giant telescopes astronomers are using to further understand its nature.

Prof. Neelima Sehgal has been an Assistant Professor in the Physics and Astronomy Department at Stony Brook University since 2012. Her research interests include understanding dark energy, dark matter, neutrino properties, and the early Universe.