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SUMMARY:Rage against the dying of the light: Type Ia supernovae at 1000 da
 ys and beyond - Or Graur
DTSTART:20200311T131500Z
DTEND:20200311T134500Z
UID:TALK137443@talks.cam.ac.uk
CONTACT:Catrina Diener
DESCRIPTION:Type Ia supernovae (SNe Ia) have famously been used as standar
 d candles\, a use that led to the discovery that the expansion of the Univ
 erse was accelerating under the influence of a mysterious new phenomenon c
 alled "dark energy." And yet\, we still do not have a clear picture of the
  progenitors of SNe Ia\, i.e.\, what types of star systems end up explodin
 g as these supernovae. For obvious reasons\, most observers study these su
 pernovae when they are young and at their brightest. In my talk\, I will p
 resent recent results from studies of SN Ia rates\, from non-detections of
  SNe Ia in different types of observations\, and from SN Ia observations t
 aken thousands of days after explosion. I will specifically emphasize how 
 Hubble Space Telescope observations of old SNe Ia >1000 days after explosi
 on reveal new information on the progenitors and physics of the explosions
  and their aftermath. 
LOCATION:Sackler Lecture Theatre\, IoA
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