2020-07-22

invariants and angles

Not much astrophysics research today. It turns out that racism is a much harder problem than, say, uncertainty estimation on a measurement! But I did do a tiny bit of research:

Adrian Price-Whelan (Flatiron) came by my office (yes, actually in person) and we worked a tiny bit on our reboot of the Chemical Tangents idea: The (birth) abundances, the birthday (like age), and (approximately) the actions of a star are invariants; the orbital angles and evolutionary phase are not. In an integrable, steady-state problem, the angle distributions should be both uniform and separable (from everything else). These ideas unify a lot of work over the last few years. We're trying to write a simple paper that's primarily pedagogical, but we don't have set scope yet.

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