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SUMMARY:Strongly lensed supernovae\, the past and the future -  Tanja Petr
 ushevska\, University of Nova Gorica
DTSTART:20240626T133000Z
DTEND:20240626T140000Z
UID:TALK218317@talks.cam.ac.uk
CONTACT:Niall MacCrann
DESCRIPTION:The searches and observations of supernovae (SNe) have been mo
 tivated by the fact that they are exceptionally useful for various astroph
 ysical and cosmological applications. Most prominently\, Type Ia SNe (SNe 
 Ia) have been used as distance indicators showing that the expansion rate 
 of the Universe is accelerating.  The strong gravitational lensing effect 
 provides another powerful tool and occurs when a foreground mass distribut
 ion is located along the line of sight to a background source. It can happ
 en so that galaxies and galaxy clusters can act as “gravitational telesc
 opes”\,  boosting the faint signals from distant SNe and galaxies. Thank
 s to the magnification boost provided by the gravitational telescope\, we 
 are able to probe galaxies and SNe that otherwise would be undetectable.  
 Therefore\, the combination of the two tools\, SNe and strong lensing\, in
  the single phenomenon of strongly lensed SNe\, provides a powerful simult
 aneous probe of several cosmological and astrophysical phenomena. By measu
 ring the time delays of strongly lensed supernovae and having a high-quali
 ty strong lensing model of the galaxy cluster\, it is possible to measure 
 the Hubble constant with competitive precision. In this talk\, I will pres
 ent some of the past and recent results that have been possible due to the
  observations of strongly lensed supernovae and anticipate what we can exp
 ect in the future from the upcoming telescope surveys\, such as the Vera C
 . Rubin Observatory and Nancy G. Roman Space Telescope. \n
LOCATION:Ryle Room\, Kavli
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