Are there a zillion spider eyes reflecting back, and in what conditions does radiation reflect off a black hole or radiate out as Hawking radiation?
I've heard it said that there is Hawking radiation from all things? If so, then the background is noisy but potentially as useful as a black hole analogue for experimentation.
Experiment: lab scale vortex black hole analogue, coherent laser, timecoded known plaintext
Are there observations of Hawking radiation to study?
Is there an information/energy ejection fraction that increases in the final stages of a black hole lifecycle? Does all of the information in the black hole dump out when you destabilize such a superfluid vortex, as with dye in the sidewall of a fluid vortex?
Recently I've studied/simulated "brittle fracture" states and now "shear jamming" states with DDF Dilatant Dark Fluid. We hypothesized that there was an ensemble to decode Hawking radiation that included: iGPE Gross-Pitaevskii equation (inverse, interactive?), Amplitudehedron, iQFT, ALS tensor decomposition; but that's really just simulation and conjecture. Though I think that we may have developed a lean formalization for some of this while stressing our combined lean 'signals' model with other physics problems.
More recent research ( https://news.ycombinator.com/item?id=50295549 ) indicated that GrC(2,4) is the Grassmanian for photonic and electronic superposition and also orbital resonance, but GrC(3,6) is useful for volumetric analysis (imaging,) and quantum crystallography.