Public Lecture—The Dark Universe Through Einstein's Lens
Δημοσιεύθηκε στις 29 Ιουλ 2013
Lecture Date: Tuesday, July 23rd.
Debbie Bard, a staff scientist at SLAC and a member of the Kavli
Institute for Particle Astrophysics and Cosmology, delivered the July 23
SLAC Public Lecture, "The Dark Universe Through Einstein's Lens."
Bard's
talk explains the phenomenon known as gravitational lensing and how
astrophysicists use it to explore the 95 percent of the universe that
remains unseen: dark matter and dark energy.
One of the most
surprising predictions made by Einstein's theory of relativity is that
light doesn't travel through the universe in a straight line. The
gravitational field of massive objects will deflect the path of light
traveling past, giving some very dramatic effects. We see multiple
images of quasars, galaxies smeared into arcs and circles and magnified
images of the most distant objects in the universe. This explains how
gravitational lensing was first observed and discusses how scientists
use this phenomenon to study everything from exoplanets to dark matter
to the structure of the universe and the mysterious dark energy.
Bard
began her career at SLAC as a particle physicist and has since
graduated to studying galaxy clusters -- moving from exploring the most
minuscule bits of matter in the universe to the largest structures
known. Currently she's developing new ways to mine data from the future
Large Synoptic Survey Telescope (LSST) for information. Discovering how
to push gravitational lensing to its limits is one promising focus of
her research. Lecturer: Debbie Bard, SLAC/Kavli
Debbie Bard, a staff scientist at SLAC and a member of the Kavli
Institute for Particle Astrophysics and Cosmology, delivered the July 23
SLAC Public Lecture, "The Dark Universe Through Einstein's Lens."
Bard's
talk explains the phenomenon known as gravitational lensing and how
astrophysicists use it to explore the 95 percent of the universe that
remains unseen: dark matter and dark energy.
One of the most
surprising predictions made by Einstein's theory of relativity is that
light doesn't travel through the universe in a straight line. The
gravitational field of massive objects will deflect the path of light
traveling past, giving some very dramatic effects. We see multiple
images of quasars, galaxies smeared into arcs and circles and magnified
images of the most distant objects in the universe. This explains how
gravitational lensing was first observed and discusses how scientists
use this phenomenon to study everything from exoplanets to dark matter
to the structure of the universe and the mysterious dark energy.
Bard
began her career at SLAC as a particle physicist and has since
graduated to studying galaxy clusters -- moving from exploring the most
minuscule bits of matter in the universe to the largest structures
known. Currently she's developing new ways to mine data from the future
Large Synoptic Survey Telescope (LSST) for information. Discovering how
to push gravitational lensing to its limits is one promising focus of
her research. Lecturer: Debbie Bard, SLAC/Kavli
AΝΑΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 14/3/2014
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