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BEGIN:VEVENT
UID:bc84b802048560185a13bc0603811ed1
CATEGORIES:Nonlinear Analysis
CREATED:20220331T132612
SUMMARY:Existence of Rotating Stars Solutions with Variable Entropy
LOCATION:Zoom
DESCRIPTION:<p><strong>Abstract:&nbsp;</strong>The Euler-Poisson equations are a classi
 cal model in the theory of stellar structure. When a star has nonzero angul
 ar momentum, it will deform from a spherical shape and settle at a steady s
 tate called a rotating star solution. An extensive literature has establish
 ed the existence of such solutions for given angular velocity profile, incl
 uding the case of differential rotation, where different parts of the star 
 rotate at different speeds. However, all of the existing results only allow
  the angular velocity to depend on the distance to the rotation axis, but n
 ot on the distance to the equatorial plane. In this talk, I will present th
 e first result that allows a general rotation profile, without restrictions
 . This enables us to model the rotation of our own Sun. I will also explain
  a hidden connection between the restriction on the rotation profile and th
 e constancy of entropy across the star. Consequently, the new result is the
  first one that allows a genuinely changing entropy within the star. This i
 s joint work with Juhi Jang and Walter Strauss.</p>
CONTACT:Yilun Wu, University of Oklahoma
X-EXTRAINFO:Zoom link:\nhttps://rutgers.zoom.us/j/96430905091?pwd=Tkp4N0FlRnk3ZXZLWTl6L
 zRHdkNZdz09  Meeting ID: 964 3090 5091   Passcode: 491508\n
DTSTAMP:20260829T215201
DTSTART;TZID=America/New_York:20220413T093000
DTEND;TZID=America/New_York:20220413T103000
SEQUENCE:0
TRANSP:OPAQUE
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