Critical take on "Mass models of disk galaxies from the DiskMass Survey in MOND"

Understand

Angus et al.

• (2015) have recently faulted MOND as follows: Studying thirty disc galaxies from the DiskMass survey, they derive the profiles of velocity dispersion perpendicular to the discs as predicted by MOND, $\sigma_M(r)$, and compare them with $\sigma(r)$, measured as part of the DiskMass project.
• This is a new test of MOND, different from rotation-curve analysis.
• A nontrivial accomplishment of MOND -- not discussed by Angus et al.