High-frequency radiation from a particle falling into a Kerr black hole |
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Authors: | I G Dymnikova |
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Institution: | (1) A.F. Ioffe Physico-Technical Institute, Academy of Sciences of the U.S.S.R., Leningrad, USSR |
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Abstract: | The high-frequency electromagnetic and gravitational radiation from a relativistic particle falling into a Kerr and Schwarzschild black hole is considered. The spectral and angular distributions of the radiation power are calculated by the WKB technique to Teukolsky's equations. The spectra obtained have a characteristic exponential cut-off at the frequency =
char. which is proportional to the particle Lorentz factor =(1–v
2/c2)–1/2. At the frequencies as low as those compared with
char. both electromagnetic and gravitational spectra are flat. The amount of the energy emitted in the low-frequency modes of the radiation depends strongly on the radiation spin . It is proportional to ln for the electromagnetic and to
3 for the gravitational radiation. |
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Keywords: | |
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