JPL Home NASA Home Caltech Home
Follow this link to skip to the main content
NASA Logo - Jet Propulsion Laboratory
JPL Home Earth Solar System Stars & Galaxies Technology
Science Visitor and Colloquium Program
Information for Visiting Speakers
Astrophysics Colloquium

Probing Cosmic Acceleration With Galaxy Clustering
Presented by Yun Wang
Infrared Processing and Analysis Center, California Institute of Technology

Thursday, March 5, 2015
4:00 P.M. in 169-336

Our Universe has been observed to be undergoing accelerated expansion today. The unknown reason for this cosmic acceleration is referred to as "dark energy". At present, we do not know whether it is a new energy component of the Universe with negative pressure, or a modification of Einstein's theory of gravity (i.e., general relativity). I will discuss the use of galaxy clustering to measure the cosmic expansion history and the growth history of large scale structure, which enable us to probe the nature of cosmic acceleration.

JPL Contact: Leonidas Moustakas (3-5095)

SVCP Astrophysics

Privacy / Copyrights
  NASA Home Page
Site Manager:

CL 08-3220