Scientific Colloquium
October 10, 2018, 3:30 p.m.
Building 3, Goett Auditorium
STEVEN RITZ
UNIVERSITY OF CALIFORNIA,
SANTA CRUZ
"Observing
the Universe Broadly, Deeply, and Frequently"
For astronomical facilities, the combination of wide field of
view, high sensitivity, broad energy range, and agility offers
huge scientific opportunities and new ways of operating. I’ll
discuss two seemingly very different observatories that share
these characteristics. The Large Synoptic Survey Telescope
(LSST), currently under construction, is an integrated survey
system with an eight-meter class primary mirror and 3.2
gigapixel camera, designed to conduct a decade-long, deep, wide,
fast time-domain survey of the entire optical sky visible from
Cerro Pachón in central Chile. The Fermi Gamma-ray Space
Telescope, launched into low-earth orbit in 2008, observes the
whole sky every three hours at energies that are millions to
trillions of times larger, using a huge array of particle
detectors. The variety of objects these wonderful facilities can
study spans from as close as our own planet to cosmological
distances, and scientific topics include understanding the
nature of the mysterious dark matter and dark energy. Large,
rich data sets (LSST will produce an estimated 20TB of data per
night) and diverse community needs pose important challenges and
opportunities for software development that will also be
discussed.
About the Speaker:
Steve Ritz is a professor of physics and the
director of the Santa Cruz Institute for Particle Physics
(SCIPP) at the University of California, Santa Cruz. Prior to
joining the faculty at UCSC he was an astrophysicist at NASA’s
Goddard Spaceflight Center, where he served as the Fermi (nee
GLAST) Project Scientist from 2003 through most of the first
year of science operations. In 2013, he took on the role of
Camera Project Scientist for the Large Synoptic Survey Telescope
(LSST). His current interests include studies related to
understanding the nature of dark matter and dark energy.
In his spare time, Ritz has also been involved in several
aspects of science policy, including most recently serving as
chair of the Particle Physics Project Prioritization Panel (P5)
and co-chair of the National Academies’ Committee on Astronomy
and Astrophysics.
Ritz received his B.A. in physics and music from Wesleyan
University and his Ph.D. in physics from the University of
Wisconsin-Madison. He is a fellow of the American Physical
Society and a recipient of the NASA Outstanding Leadership
Medal, and he was a Sloan Foundation Fellow in Physics. In 2012,
he received a UCSC Excellence in Teaching Award.
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