Comment on "The Real Problem with MOND" by Scott Dodelson, arXiv:1112.1320

Details Comment on "The Real Problem with MOND" by Scott Dodelson, arXiv:1112.1320 Comment on "The Real Problem with MOND" by Scott Dodelson, arXiv:1112.1320

2011-12-19

arxiv.org/abs/1112.4386v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

3 pages, 1 figure

Scientific paper

We comment on arXiv:1112.1320 and point out that baryonic oscillations of the matter power spectrum, while predicted by theories that do not incorporate collisionless cold dark matter, are strongly suppressed by the statistical window function that is used to process finite-sized galaxy samples. We assert that with present-day data sets, the slope of the matter power spectrum is a much stronger indicator of a theory's validity. We also argue that MOND should not be used as a strawman theory as it is not in general representative of modified gravity theories; some theories, notably our scalar-vector-tensor MOdified Gravity (MOG), offer much more successful predictions of cosmological observations.

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