Version 1
: Received: 26 October 2020 / Approved: 28 October 2020 / Online: 28 October 2020 (11:28:58 CET)
Version 2
: Received: 21 May 2021 / Approved: 24 May 2021 / Online: 24 May 2021 (10:15:05 CEST)
Gomel, R.; Zimmerman, T. The Effects of Inertial Forces on the Dynamics of Disk Galaxies. Galaxies 2021, 9, 34. https://doi.org/10.3390/galaxies9020034
Gomel, R.; Zimmerman, T. The Effects of Inertial Forces on the Dynamics of Disk Galaxies. Galaxies 2021, 9, 34. https://doi.org/10.3390/galaxies9020034
Gomel, R.; Zimmerman, T. The Effects of Inertial Forces on the Dynamics of Disk Galaxies. Galaxies 2021, 9, 34. https://doi.org/10.3390/galaxies9020034
Gomel, R.; Zimmerman, T. The Effects of Inertial Forces on the Dynamics of Disk Galaxies. Galaxies 2021, 9, 34. https://doi.org/10.3390/galaxies9020034
Abstract
When dealing with galactic dynamics, or more specifically, with galactic rotation curves, one basic assumption is always taken: the frame of reference relative to which the rotational velocities are given is assumed to be inertial. In other words, fictitious forces are assumed to vanish relative to the observational frame of a given galaxy. It might be interesting, however, to explore the outcomes of dropping that assumption; that is, to search for signatures of non-inertial behavior in the observed data. In this work, we show that the very discrepancy in galaxy rotation curves could be attributed to non-inertial effects. We derive a model for spiral galaxies that takes into account the possible influence of fictitious forces and find that the additional terms in the new model, due to fictitious forces, closely resemble dark halo profiles. Following this result, we apply the new model to a wide sample of galaxies, spanning a large range of luminosities and radii. It turns out that the new model accurately reproduces the structures of the rotation curves and provides very good fittings to the data.
Keywords
reference systems; galaxies: kinematics and dynamics; cosmology: dark matter
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
