Comment by throwawaymaths
Comment by throwawaymaths a day ago
It's pretty reasonable to invoke occam's razor for claiming that in general unexpected galaxy rotation curves have a common explanation. It's another thing to claim without blinking an eye that these are phenomenologically connected to baryon acuoustic oscillations in the CMB (which is what Angela does)
Since it's been a _long_ time since my physics undergrad I honestly can not speak to how baryon acoustic oscillations tie into dark matter. Hell the paper describing it came out after my first trip through college!
I'll confess the paper is a bit over my head. Astrophysics was never my passion and I became a software engineer right out of college anyways, so I'm a little rusty. However, in the 2005 paper they state that the BAO, specifically the way that the BAO has propagated, can't be explained by baryonic matter alone, which in their words would show a much larger effect than observed. This seems to be yet another observation that is consistent with dark matter.
However, since you must be a working astrophysicist, could you enlighten me with what you think is wrong with the interpretation of those observations? Do you think the >3 sigma confidence isn't enough for astrophysics?
I am genuinely curious.