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SUMMARY:Kundt and Robinson-Trautman spacetimes in higher dimensions - Jiri
  Podolsky\, Charles University
DTSTART:20110506T120000Z
DTEND:20110506T130000Z
UID:TALK30591@talks.cam.ac.uk
CONTACT:David Kubiznak
DESCRIPTION:We summarize general metrics of the Kundt and Robinson-Trautma
 n classes of spacetimes in higher dimensions. Geometrically\, they admit a
  non-twisting\,\nnon-shearing and either non-expanding or expanding geodes
 ic null congruence\, respectively. We discuss possible algebraic types and
  main geometric constraints imposed by field equations. We explicitly deri
 ve and study the corresponding Einstein-Maxwell equations\, including an a
 rbitrary cosmological constant\, in the case of vacuum\, with an aligned e
 lectromagnetic field\, or pure radiation.\n\nWe introduce canonical subcla
 sses and we identify the most important special cases\, namely generalized
  pp-waves\, VSI or CSI spacetimes and gyratons in the\nKundt family\, and 
 generalized Reissner-Nordstrom-de Sitter black holes in the Robinson-Traut
 man family. We also argue that there is no analogue of the C-metric in the
  higher-dimensional Robinson-Trautman (electro)vacuum class\, but there is
  an interesting family of pure radiation metrics of this type with\nrepres
 ent Kinnersley photon rockets accelerating arbitrarily in any dimension.
LOCATION:Pavilion B Potter Room (B1.19)
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