Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989stin...8926794s&link_type=abstract
Unknown
Astronomy and Astrophysics
Astrophysics
Black Holes (Astronomy), Conservation Laws, Emission Spectra, Gravitational Waves, Neutron Stars, Angular Momentum, Astrophysics, Eigenvalues, Mass Distribution
Scientific paper
Gravitational radiation induced by a test particle falling into an extreme Kerr black hole was investigated analytically. Assuming the radiation is dominated by the infinite sequence of quasi-normal modes which has the limiting frequency m/(2M), where m is an azimuthal eigenvalue and M is the mass of the black hole, it was found that the radiated energy diverges logarithmically in time. Then the back reaction to the black hole was evaluated by appealing to the energy and angular momentum conservation laws. It was found that the radiation has a tendency to increase the ratio of the angular momentum to mass of the black hole, which is completely different from non-extreme case, while the contribution of the test particle is to decrease it.
Nakamura Takashi
Sasaki Misao
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