Physics Department Colloquia

<< Fall 2017 Spring 2018 Summer 2018 >>
Subscribe your calendar or receive email announcements of events

Events During the Week of February 25th through March 4th, 2018

Monday, February 26th, 2018

No events scheduled

Tuesday, February 27th, 2018

No events scheduled

Wednesday, February 28th, 2018

No events scheduled

Thursday, March 1st, 2018

No events scheduled

Friday, March 2nd, 2018

Exploring the dark universe with cosmic surveys
Time: 3:30 pm
Place: 2241 Chamberlin Hall
Speaker: Keith Bechtol, Large Synoptic Survey Telescope
Abstract: Over the past few decades, a “standard” but puzzling cosmological model has emerged that has passed increasingly stringent observational tests, and yet raises many new questions. What is causing the accelerated expansion of the Universe? What are the particle constituents of dark matter? Can we measure the influence of massive neutrinos on the growth of cosmic structure? The Dark Energy Survey (DES) is one of several ongoing experiments producing ever larger and more detailed maps of the night sky to address these questions via statistical inference from measurements of hundreds of millions of individual stars and galaxies. I will highlight several recent results from DES, including cosmology constraints from gravitational weak lensing, galaxy clustering, and supernovae, newfound dwarf galaxies and stellar streams, and the first optical detection of a kilonova explosion associated with a gravitational wave signal. I will conclude with a discussion of the next major experiment in this field, the Large Synoptic Survey Telescope (LSST), now under construction in Chile, with first light expected in 2020.
Host: Sridhara Dasu
Add this event to your calendar