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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Elekromagnetické pole skloněné proudové smyčky na pozadí Kerrovy černé díry
 Žlábek, Martin ; Kofroň, David (advisor) ; Karas, Vladimír (referee)
This work discusses electromagnetic fields around Kerr black hole. We extend prior work by finding a new source term - a non-axial current loop. We analyze this solutions behaviour. We also discuss in detail the Meissner effect. Explore various visualization techniques of electromagnetic fields and we also show that the electromagnetic invariants vanish at the horizon under the same conditions that trigger the Meissner effect. 1
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Superradiance on accelerated systems
 Žlábek, Martin ; Kofroň, David (advisor) ; Tahamtan, Tayebeh (referee)
In this work we will study the electromagnetic superradiance phenomenon on acceler- ated systems. We will briefly cover superradiance on a cylinder, which was thermodynam- ically proven by Zel'dovich. Then we will attempt to formulate the problem in accelerated coordinates, namely the flat-spacetime limit of the C-metric. Briefly introducing the C- metric, the Newman-Penrose formalism and the Geroch-Held-Penrose formalism along the way. Using the formalism of vector spherical harmonics, we point out the complica- tions which arise from not respecting the spherical symmetry of the spherical coordinate system. 1
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1 Žlábek, Michal
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