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- W2015447908 abstract "Recently, several ways of verifying the existence of black-hole horizons have been proposed. We show here that most of these suggestions are irrelevant to the problem of the horizon, at best they can rule out the presence of conventional baryonic matter in the outer layers of black-hole candidates. More generally, we argue that it is fundamentally impossible to detect in electromagnetic radiation direct evidence for the presence of a black-hole horizon. This applies also to future observations, which would trace very accurately the details of the space-time metric of a body suspected of being a black hole. Specific solutions of Einsteins's equations lack an event horizon, and yet are indistinguishable in their electromagnetic signature from Schwarzschild black holes." @default.
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- W2015447908 date "2002-12-01" @default.
- W2015447908 modified "2023-10-16" @default.
- W2015447908 title "No observational proof of the black-hole event-horizon" @default.
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- W2015447908 doi "https://doi.org/10.1051/0004-6361:20021645" @default.
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