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SUMMARY:Revisiting mode stability for Kerr(-dS) black holes - Rita Teixeir
 a da Costa (Princeton/DAMTP)
DTSTART:20211022T123000Z
DTEND:20211022T133000Z
UID:TALK162016@talks.cam.ac.uk
CONTACT:Justin Ripley
DESCRIPTION:The Teukolsky master equations are a family of PDEs describing
  the linear behavior of perturbations of the Kerr black hole family\, of w
 hich the wave equation is a particular case. As a first essential step tow
 ards stability\, Whiting showed in 1989 that the Teukolsky equation on sub
 extremal Kerr admits no exponentially growing modes.\n\nIn this talk\, we 
 review Whiting’s classical proof and a recent adaptation thereof to the 
 extremal Kerr case. We also present a new approach to mode stability\, bas
 ed on uncovering hidden spectral symmetries in the Teukolsky equations. Pa
 rt of this talk is based on joint work with Marc Casals (CBPF/UCD).\n\nTop
 ic: Friday GR Seminar\n\nTime: Oct 22\, 2021 01:30 PM London\n\nhttps://ma
 ths-cam-ac-uk.zoom.us/j/99680141835?pwd=c1Y2R0YrSEZ1T0dUM3FzdENiQXJtUT09\n
 \nMeeting ID: 996 8014 1835\n\nPasscode: 635710
LOCATION:Zoom
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