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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3519
DTSTART:20141106T213000Z
DTEND:20141106T230000Z
DTSTAMP:20260419T161745Z
LAST-MODIFIED:20141031T193626Z
LOCATION:4421 Sterling Hall
SUMMARY:New Windows into Supernova Explosions and Progenitors\, Astron
 omy Colloquium\, Jennifer Hoffman\, UW Milwaukee
DESCRIPTION:<br>
\nSupernovae of all types exhibit time-dependent spec
 tropolarimetric signatures produced primarily by electron scattering. 
 These reveal the presence of aspherical phenomena such as complex velo
 city structures\, changing illumination\, and asymmetric morphologies 
 within the ejecta or surrounding circumstellar material. The gradual t
 hinning of the ejecta over time also allows us to probe different scat
 tering regions as the supernova evolves. Interpreting the time variati
 ons of spectropolarimetric signatures yields unprecedentedly detailed 
 information about supernova explosion mechanisms\, the physical proces
 ses that shape the density and velocity distributions of the ejecta an
 d circumstellar material\, and the properties of the progenitor star.<
 br>
\n<br>
\nI will present an overview of supernova spectropolarimetr
 y\, highlighting recent observational and computational results. This 
 versatile technique helps us to constrain explosion mechanisms\, conne
 ct SNe with their massive progenitors (as well as other high-energy tr
 ansient phenomena such as GRBs)\, and investigate the process of stell
 ar evolution in other galaxies. 
URL:https://www.physics.wisc.edu/events/?id=3519
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