Halo Acceleration Relation

Abstract

Recently, from the new Spitzer Photometry and Accurate Rotation Curves (SPARC) data, McGaugh et al. (2016) reported a tight Radial Acceleration Relation (RAR) between the observed total acceleration and the acceleration produced by baryons in spiral galaxies. The relation can be fitted by different functions. However, these functions can be discerned if we express the data in the form of halo acceleration relation (HAR). The data reveals a maximum in the halo acceleration. We examined NFW (cusp) and Burkert (core) profiles in the context of dark matter and different parameter families of the interpolating function in the framework of Modified Newtonian Dynamics (MOND).

6 pages, 7 figures

References in corpus (12)

• SPARC: Mass Models for 175 Disk Galaxies with Spitzer Photometry and Accurate Rotation Curves
• The Radial Acceleration Relation in Rotationally Supported Galaxies
• One Law To Rule Them All: The Radial Acceleration Relation of Galaxies
• A Tale of Two Paradigms: the Mutual Incommensurability of LCDM and MOND
• A statistical investigation of the mass discrepancy-acceleration relation
• Galactic rotation curves, the baryon-to-dark-halo-mass relation and space-time scale invariance
• Rings and shells of "dark matter" as MOND artifacts
• MOND impact on and of the recently updated mass-discrepancy-acceleration relation
• Modified Newtonian Dynamics, an Introductory Review
• The mass discrepancy acceleration relation in early-type galaxies: extended mass profiles and the phantom menace to MOND
• Mass of Galactic Lenses in Modified Newtonian Dynamics
• Dynamics of Elliptical Galaxies with Planetary Nebulae in Modified Newtonian Dynamics