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Alternative Gravity in the recent Bizyaev (2021) Edge-On Galaxies

ORAL

Abstract

Recently, Bizyaev et. al. (2021) conducted the first modeling of rotation curves for 153 ultra-faint, edge-on galaxies using the 3.5 m telescope at the Apache Point Observatory.  These models derived high resolution rotation curves for 20 galaxies of various sizes and spiral morhpologies, making estimates of optical scale lengths.  Using the derived models, in this work we make the first fits to the rotation curves using alternative gravity, namely conformal gravity, modified newtonian dynamics and more.  A robust analysis is shown including the derived rotation curve fits to the alternative gravity models, along with how the models account for empirical phenomena such as the Baryonic Tully Fisher relation and the Radial Acceleration Rule.  Enhancements to the modelling procedure of Bizyaev et al. are suggested and discussed.

Presenters

  • James G O'Brien

    Springfield College, University of Connecticut

Authors

  • James G O'Brien

    Springfield College, University of Connecticut

  • William M Kerin

    Springfield College

  • Thomas Chiarelli

    Wentworth Inst of Tech