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UID:UW-Physics-Event-3786
DTSTART:20151008T204500Z
DTEND:20151008T220000Z
DTSTAMP:20240319T015144Z
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:
\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.
\n
\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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