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- W2030520905 abstract "We analyze the amplification due to so-called superradiance from the scattering of pulses off rotating black holes as a numerical time evolution problem. We consider the ``worst possible case'' of scalar field pulses for which superradiance effects yield amplifications $<1%.$ We show that this small effect can be isolated by numerically evolving quasi-monochromatic, modulated pulses with a recently developed Teukolsky code. The results show that it is possible to study superradiance in the time domain, but only if the initial data is carefully tuned. This illustrates the intrinsic difficulties of detecting superradiance in more general evolution scenarios." @default.
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- W2030520905 date "1998-09-01" @default.
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- W2030520905 title "Dynamics of scalar fields in the background of rotating black holes. II. A note on superradiance" @default.
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- W2030520905 doi "https://doi.org/10.1103/physrevd.58.087503" @default.
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