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UID:UW-Physics-Event-6931
DTSTART:20220509T200000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T114405Z
LAST-MODIFIED:20220420T170909Z
LOCATION:2241 Chamberlin Hall
SUMMARY:Hunting for Multimessenger Transients and Lensed Supernovae\, 
 Thesis Defense\, Robert Morgan\, Physics PhD Graduate Student
DESCRIPTION:Advances in data collection technology for optical astrono
 my\, such as the Dark Energy Camera\, have facilitated the collection 
 of some of the largest astronomical datasets\, in terms of sky area\, 
 depth\, number of objects\, number of observations\, and frequency of 
 observations. Consequentially\, physical systems that have been histor
 ically rare become represented in small\, but discoverable\, numbers. 
 I have developed techniques to identify rare physical systems (counter
 parts to high-energy neutrinos\, counterparts to gravitational waves\,
  and gravitationally lensed supernovae) that can shed new light on the
  physical processes that govern the Universe. For each system of inter
 est\, I collect new or search archival observations with the Dark Ener
 gy Camera\, develop selection methodologies to find the system of inte
 rest in the observations\, and quantify the efficiency of the search u
 sing simulations. Each of the three analyses has its own scientific im
 plications: I constrain the observing program required to determine th
 e contribution of supernovae to the diffuse high-energy neutrino flux\
 ; I set constraints on the physical properties of an optical counterpa
 rt to a compact object merger\; and I identify candidate lensed supern
 ovae using a novel machine learning technique.
URL:https://www.physics.wisc.edu/events/?id=6931
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