Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2010-08-11
Phys.Rev.Lett.106:021302,2011
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
7 pages, 5 figures. This version corrects a processing error in the final graph 5b which multiplied the vertical axis by 2. Th
Scientific paper
10.1103/PhysRevLett.106.021302
There is a mathematical analogy between the propagation of fields in a general relativistic space-time and long (shallow water) surface waves on moving water. Hawking argued that black holes emit thermal radiation via a quantum spontaneous emission. Similar arguments predict the same effect near wave horizons in fluid flow. By placing a streamlined obstacle into an open channel flow we create a region of high velocity over the obstacle that can include wave horizons. Long waves propagating upstream towards this region are blocked and converted into short (deep water) waves. This is the analogue of the stimulated emission by a white hole (the time inverse of a black hole), and our measurements of the amplitudes of the converted waves demonstrate the thermal nature of the conversion process for this system. Given the close relationship between stimulated and spontaneous emission, our findings attest to the generality of the Hawking process.
Lawrence Gregory A.
Penrice Matthew C. J.
Tedford Edmund W.
Unruh William G.
Weinfurtner Silke
No associations
LandOfFree
Measurement of stimulated Hawking emission in an analogue system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Measurement of stimulated Hawking emission in an analogue system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of stimulated Hawking emission in an analogue system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-480121