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UID:UW-Physics-Event-3786
DTSTART:20151008T204500Z
DTEND:20151008T220000Z
DTSTAMP:20260313T135557Z
LAST-MODIFIED:20150831T182754Z
LOCATION:4421 Sterling Hall
SUMMARY:Stellar Forensics with Explosions: Supernovae\, Gamma-Ray Burs
 ts\, and their Environments \, Astronomy Colloquium\, Maryam Modjaz\, 
 New York University
DESCRIPTION:<br>
\nNature's two magnificent explosions\, long-duration
  gamma-ray bursts (GRBs) and stripped-envelope supernovae (SNe)\, are 
 both products of collapsing massive stars. Yet\, over the last 15 year
 s\, we have not determined the detailed make-up of the stellar progeni
 tors of each kind of explosion\, nor the conditions that lead to each 
 kind of explosion in massive stripped stars. While long-duration GRBs 
 emit relativistic jets of high-energy radiation\, stripped SNe are cor
 e-collapse explosions whose massive progenitors have been stripped of 
 their outer hydrogen and helium envelopes.<br>
\n<br>
\nI will present
  a number of comprehensive observational studies that probe the progen
 itor environments\, their metallicities and the explosion parameters o
 f SNe with and without GRBs\, as well as those of normal Stripped SNe\
 , with the goal of constraining their progenitor systems and explosion
 s mechanisms. I will conclude with an outlook on how the most promisin
 g venues of research - using the many existing and upcoming innovative
  surveys such as the Palomar Transient Factory and LSST - have shed ne
 w light on the diverse deaths of massive stars\, and will continue to 
 do so. 
URL:https://www.physics.wisc.edu/events/?id=3786
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