01:01:18 Jordi Miralda: Masha, why would a signal from a black hole with an axion cloud with self-interaction be monochromatic? It seems like the axion going to the black hole could go down with any energy so the outgoing axion would also have a continuum spectrum of energy. 01:02:48 Masha Baryakhtar: thanks for your question! the process is two axions in level 322 going to one axion in level 211 and one going to infinity. the energy difference is then alpha^2/72. in principle you could have another final state, but the process i am talking about is bose-enhanced by the large number of axions already in 211 01:03:20 Masha Baryakhtar: does that make sense? 01:08:24 Jordi Miralda: Masha, yes, thanks very much for your answer.