Can a passing black hole disturbance leave a trace in Hawking radiation?
Black holes, despite their extreme nature, are described by surprisingly few basic parameters: their mass, charge and spin. Two black holes may have formed for completely different reasons and passed through very different histories, yet still end up in the same final state. John Wheeler summarized this idea with the famous phrase "black holes have no hair."
We haven't written up this one. Phys.org has the full story — the link below goes straight to it.
