2018-09-06

talking

My only real research today was conversations with Bonaca (Harvard) about her stream–dark-matter substructure collision problem, explaining features in the GD-1 stream. We discussed ways to analyze how important the stream thickness is, without actually building a realistic model of the stream thickness. That is, our simplest simulations treat the stream as arbitrarily thin, but the best impact models may not be clearly in the thin-stream limit.

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