<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Nonlinear waves in Poynting-flux dominated outflows\r\n"^^ . "Rotating, compact objects power some of the most spectacular phenomena in astrophysics, e.g., gamma-ray bursts, active galactic nuclei and pulsar winds. The energy is carried by Poynting flux, and the system is usually modelled using relativistic magnetohydrodynamics (MHD). However, in the relatively low density medium expected around some of these objects, the MHD approximation breaks down, allowing new, large-amplitude waves to propagate. We discuss the role of these waves in two astrophysical contexts: \r\n\r\nIn blazar jets, we show that a magnetic shear, launched together with a plasma from the black hole magnetosphere, begins to accelerate particles at a large distance from its source. The resulting non-thermal emission can, nevertheless, be modulated on very short timescales, which can explain the rapid variability of the TeV gamma-ray flux observed from some blazars. \r\n\r\nIn pulsar winds, we analyze the radial propagation of superluminal modes, including their damping by radiation reaction and by interaction with an external photon field. We discuss their effect on the structure of the pulsar wind termination shock, presenting new solutions in which the nonlinear wave is asymptotically matched to the constant pressure surroundings. The observational implications of these solutions are discussed for both isolated pulsars, and pulsars in binary systems.\r\n"^^ . "2012-11-22" . . . . . . . "Iwona"^^ . "Mochol"^^ . "Iwona Mochol"^^ . . . . . . "Nonlinear waves in Poynting-flux dominated outflows\r\n (PDF)"^^ . . . "thesis.pdf"^^ . . . "Nonlinear waves in Poynting-flux dominated outflows\r\n (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Nonlinear waves in Poynting-flux dominated outflows\r\n (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Nonlinear waves in Poynting-flux dominated outflows\r\n (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Nonlinear waves in Poynting-flux dominated outflows\r\n (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Nonlinear waves in Poynting-flux dominated outflows\r\n (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #14053 \n\nNonlinear waves in Poynting-flux dominated outflows \n\n\n" . "text/html" . . . "500 Naturwissenschaften und Mathematik"@de . "500 Natural sciences and mathematics"@en . . . "520 Astronomie"@de . "520 Astronomy and allied sciences"@en . . . "530 Physik"@de . "530 Physics"@en . .