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Diffuse emission from black hole remnants

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arxiv 2207.06978 v2 pith:ZYGWUIF3 submitted 2022-07-14 gr-qc hep-th

Diffuse emission from black hole remnants

classification gr-qc hep-th
keywords blackdensitydiffuseemissionholeradiationremnantsconservation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We point out that conservation of information implies that remnants produced at the end of black hole evaporation should radiate in the low-frequency spectrum. We model this emission and derive properties of the diffuse radiation emitted by an otherwise dark population of such objects. We show that for early universe black holes the frequency and energy density of this radiation, which are in principle measurable, suffice to estimate the remnant density.

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