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Dark Energy from the Largest Galaxy Maps

SETI Institute

Tuesday, April 29, 2014 from 12:00 PM to 1:00 PM (PDT)

Mountain View, CA

Dark Energy from the Largest Galaxy Maps

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General Admission Ended Free  

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Event Details

Speaker: David Schlegel, UC Berkeley
http://www.mymultiplesclerosis.co.uk/universe-big/images/david-schlegel.jpg
Dark Energy from the Largest Galaxy Maps


Abstract: Dark energy is a phenomena causing the Universe to expand more
rapidly than can be explained by Einstein's laws of gravity.  Its discovery
merited the 2011 Nobel Prize in Physics.

The effects of dark energy imprint on large galaxy maps. The Baryon
Oscillation Spectroscopic Survey (BOSS) on the Sloan Telescope has
mapped 200 million galaxies in 2-D, and 1.5 million galaxies and quasars
in 3-D.  We measure the scale of the universe to percent-level precision at
redshifts z=2.4, z=0.6 and z=0.3, from the deceleration to acceleration
driven by dark energy.  Recent maps are consistent with the "simplest"
modification of Einstein's laws, the additional of a cosmological constant.

Have questions about Dark Energy from the Largest Galaxy Maps? Contact SETI Institute

When & Where


SETI Institute
189 N Bernardo Ave
Mountain View, CA 94043

Tuesday, April 29, 2014 from 12:00 PM to 1:00 PM (PDT)


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Organizer

SETI Institute

The mission of the SETI Institute is to explore, understand and explain the origin, nature and prevalence of life in the universe.

We believe we are conducting the most profound search in human history — to know our beginnings and our place among the stars.

The SETI Institute is a private, nonprofit organization dedicated to scientific research, education and public outreach.

Every week the SETI Institute hosts a lecture series that is open to the public, provides free PB&J's and gives people a unique opportunity to interact with some of the world's leading space scientists.

For past videos, upcoming events and full event details, go to seti.org/talks.

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