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- W2073271442 abstract "Bosonic fields on rotating black hole spacetimes are subject to amplification by superradiance, which induces exponentially-growing instabilities (the ``black hole bomb'') in two scenarios: if the black hole is enclosed by a mirror, or if the bosonic field has rest mass. Here we present a time-domain study of the scalar field on Kerr spacetime which probes ultra-long timescales up to $tensuremath{lesssim}5ifmmodetimeselsetexttimesfi{}{10}^{6}M$, to reveal the growth of the instability. We describe a highly-efficient method for evolving the field, based on a spectral decomposition into a coupled set of $1+1mathrm{D}$ equations, and an absorbing boundary condition inspired by the ``perfectly-matched layers'' paradigm. First, we examine the mirror case to study how the instability timescale and mode structure depend on mirror radius. Next, we examine the massive-field, whose rich spectrum (revealed through Fourier analysis) generates ``beating'' effects which disguise the instability. We show that the instability is clearly revealed by tracking the stress-energy of the field in the exterior spacetime. We calculate the growth rate for a range of mass couplings, by applying a frequency-filter to isolate individual modal contributions to the time-domain signal. Our results are in accord with previous frequency-domain studies which put the maximum growth rate at ${ensuremath{tau}}^{ensuremath{-}1}ensuremath{approx}1.72ifmmodetimeselsetexttimesfi{}{10}^{ensuremath{-}7}(GM/{c}^{3}{)}^{ensuremath{-}1}$ for the massive scalar field on Kerr spacetime." @default.
- W2073271442 created "2016-06-24" @default.
- W2073271442 creator A5005948157 @default.
- W2073271442 date "2013-06-21" @default.
- W2073271442 modified "2023-10-17" @default.
- W2073271442 title "Superradiant instabilities of rotating black holes in the time domain" @default.
- W2073271442 cites W1968369949 @default.
- W2073271442 cites W1968990256 @default.
- W2073271442 cites W1974335707 @default.
- W2073271442 cites W1974823915 @default.
- W2073271442 cites W1977000960 @default.
- W2073271442 cites W1978989893 @default.
- W2073271442 cites W1979169096 @default.
- W2073271442 cites W1983145759 @default.
- W2073271442 cites W1983163427 @default.
- W2073271442 cites W1984764125 @default.
- W2073271442 cites W1987187805 @default.
- W2073271442 cites W1996181605 @default.
- W2073271442 cites W1997353333 @default.
- W2073271442 cites W1998021253 @default.
- W2073271442 cites W1998292677 @default.
- W2073271442 cites W2000520018 @default.
- W2073271442 cites W2003017040 @default.
- W2073271442 cites W2003721901 @default.
- W2073271442 cites W2006465428 @default.
- W2073271442 cites W2007788235 @default.
- W2073271442 cites W2008655383 @default.
- W2073271442 cites W2009023248 @default.
- W2073271442 cites W2014006409 @default.
- W2073271442 cites W2015369532 @default.
- W2073271442 cites W2018312415 @default.
- W2073271442 cites W2020400888 @default.
- W2073271442 cites W2023079595 @default.
- W2073271442 cites W2025156223 @default.
- W2073271442 cites W2028483511 @default.
- W2073271442 cites W2033206251 @default.
- W2073271442 cites W2037097324 @default.
- W2073271442 cites W2038446221 @default.
- W2073271442 cites W2040659793 @default.
- W2073271442 cites W2042650304 @default.
- W2073271442 cites W2048529581 @default.
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- W2073271442 cites W2054925721 @default.
- W2073271442 cites W2055363116 @default.
- W2073271442 cites W2056209843 @default.
- W2073271442 cites W2057735297 @default.
- W2073271442 cites W2059892596 @default.
- W2073271442 cites W2062181047 @default.
- W2073271442 cites W2069125569 @default.
- W2073271442 cites W2073862476 @default.
- W2073271442 cites W2082606095 @default.
- W2073271442 cites W2083347038 @default.
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- W2073271442 doi "https://doi.org/10.1103/physrevd.87.124026" @default.
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