Has Hawking radiation been measured?

Experimental apparatus. The experimental apparatus used in our experiments: (1) flume, (2) intake reservoir, (3) obstacle, (4) wave generator, (5) adjustable weir, (6) holding reservoir, and (7) pump and pump valve. (S. Weinfurtner et al., Phys. Rev. Lett. 106, 021302, 2011.)—Richard J. Fitzgerald http://arxiv.org/abs/1008.1911 )

Measurement of stimulated Hawking emission in an analogue system – Experimental apparatus (S. Weinfurtner et al. 
http://arxiv.org/abs/1008.1911 )

W.G. Unruh
It is argued that Hawking radiation has indeed been measured and shown to posses a thermal spectrum, as predicted.
This contention is based on three separate legs. The first is that the essential physics of the Hawking process for black holes can be modelled in other physical systems.
The second is the white hole horizons are the time inverse of black hole horizons, and thus the physics of both is the same. The third is that the quantum emission, which is the Hawking process, is completely determined by measurements of the classical parameters of a linear physical system.
The experiment conducted in 2010 fulfills all of these requirements, and is thus a true measurement of Hawking radiation….
… Read more at http://arxiv.org/pdf/1401.6612v1.pdf

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