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SEQUENCE:0
UID:UW-Physics-Event-2317
DTSTART:20111025T203000Z
DTEND:20111025T220000Z
DTSTAMP:20260416T232147Z
LAST-MODIFIED:20111019T133435Z
LOCATION:4421
SUMMARY:"The Restless Universe (Palomar Transient Factory)\, Whitford 
 Lecture\, Shrinivas Kulkarni\, CALTECH
DESCRIPTION:Cosmic explosions were first noted nearly two thousand yea
 rs ago.However\, secure recognition and study began only a hundred yea
 rs ago.  What was once termed as Stella Nova (new stars) are now divid
 ed into two major families\, novae and supernovae (with real distinct 
 classes in each). Equally the variable stars have a rich phenomenology
 . Together\, supernovae and variable stars have contributed richly to 
 key problems in modern astrophysics: distances to galaxies\, cosmograp
 hy and build up of elements in the Universe.<br><br>
\n<br><br>
\n The
  Palomar Transient Factory (PTF)\, an innovative 2-telescope system\, 
 was designed to explicitly to chart the transient sky with a  particul
 ar focus on events which lie in the nova-supernova gap. PTF is now fin
 ding an extragalactic transient every 20 minutes and a Galactic (stron
 g) variable every 10 minutes.  Extensive spectroscopy and photometry a
 llowed us:  to identify an emerging class of ultra-luminous supernovae
 \, discover luminous red novae\, undertake UV spectroscopy of Ia super
 novae\, discover low budget supernovae\, clarify sub-classes of core c
 ollapse and thermo-nuclear explosions\, map the systematics of core co
 llapse supernovae\, identify a trove of eclipsing binaries and the cur
 ious AM CVns.<br><br>
\n<br><br>
\n 
URL:https://www.physics.wisc.edu/events/?id=2317
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