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DTSTAMP:20260416T190651
DTSTART:20130208T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/173464
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Supernovae: Mysterious\, Spectacular\, and a Key Ingredient for Lif
 e
DESCRIPTION:John Hillier\, Department of Physics and Astronomy\, University
  of PittsburghRésumé/abstract:Supernovae (SNe) are among the most energe
 tic objects in the Universe. But supernovae are more than just energetic e
 vents – they are essential for life. By studying SNe light curves and sp
 ectra we gain insights into stellar evolution\, the nature of the progenit
 or star\, surface abundances at the time of the explosion\, whether previo
 us mass-loss episodes have occurred\, and the physics of the explosion. To
  maximize the information that can be gleaned from observations of superno
 vae it is essential that we have the necessary spectroscopic tools. To thi
 s end\, we have developed a 1D time-dependent radiative transfer code capa
 ble of modeling supernova light curves and spectra. In this talk we highl
 ight recent progress the community has made in understanding SNe. We discu
 ss the various SNe classes and their origin\, which\, in many cases\, is s
 till uncertain. While we believe Type Ia SNe originate from the explosion 
 of a White Dwarf\, we still don't know whether the primary channel is accr
 etion onto the White Dwarf from a normal star\, or the merger of two White
  Dwarfs. Surprisingly\, there is also much uncertainty about the fate of s
 tars with initial masses larger than 20 solar masses. Perhaps\, even more 
 surprising\, is that models of core-collapse often do not explode.Cette co
 nférence s'adresse à tous\, y compris les professeurs\, les chercheurs e
 t les étudiants des trois cycles.Le café est servi à partir de 11h20.Ce
 tte conférence est présentée par le Département de physique de l'Unive
 rsité de Montréal.
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