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Scattering from charged black holes and supergravity

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arxiv 1507.03993 v1 pith:EVXJNOO2 submitted 2015-07-14 gr-qc hep-th

classification gr-qchep-th
keywords crossscatteringsectionsblackelectromagneticgravitationalholesreissner-nordstr
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The scattering cross sections of the unpolarized electromagnetic and gravitational waves are shown to be equal for the extreme Reissner-Nordstr\"om black hole using $N=2$ supergravity. The conversion cross sections between the unpolarized electromagnetic and gravitational waves are also shown to coincide. The gravitational and electromagnetic scattering cross sections are computed numerically for Reissner-Nordstr\"om black holes for several charge-to-mass ratios and the coincidence between the two scattering cross sections for the extremal case is confirmed.

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