[Alumnos] Charla 07/02 - Dr. Clement Stahl - Sala del IALP

[Secretaría de Ciencia y Técnica]

*Estimados,

Les recordamos que *el día miércoles se llevará a cabo la siguiente 
charla en la Sala del IALP a las 13.00 hs.*

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Secretaría de Ciencia y Técnica
FCAG*

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***Charla:Dr. Clement Stahl *- *Pontificia Universidad Católica de 
Valparaíso.***

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Título: Charged cosmological black hole.

Resumen:The cosmological black holes are black holes living not in an 
asymptotically flat universe but in an expanding spacetime. They have a 
rich dynamics in particular for their mass and horizon. In this 
presentation, we perform a natural step in investigating this new type 
of black hole: we consider the possibility of a charged cosmological 
black hole. We derive the general equations of motion governing its 
dynamics and report a new analytic solution for the special case of the 
charged Lematre-Tolman-Bondi equations of motion that describe a charged 
cosmological black hole. We then study various relevant quantities for 
the characterization of the black hole such as the C-function, the 
effect of the charge on the black hole flux and the nature of the 
singularity. We also perform numerical investigations to strengthen our 
results. Finally we challenge a model of gamma ray burst within our 
framework.

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