Abstract
Many physicists believe dark matter accounts for flat velocity curves in spiral galaxies and find further evidence for dark matter in observations of the colliding “bullet cluster” galaxies 1E0657-56. Others claim a modified law of gravity called MOND (MOdified Newtonian Dynamics) explains galactic velocity curves better than dark matter. Merritt recently argued for MOND (arXiv:1703.02389) by claiming dark matter models cannot account for the MOND acceleration threshold a0≈ 1.2x10-8cm/sec2 and the (Vobserved/VNewtonian) relation. However, this note shows that the HLSS model involving dark matter accounts for both the MOND acceleration and the (Vobserved/VNewtonian) relation. After this paper was accepted for publication, I learned that Man Ho Chan previously reached the same conclusion (arXiv:1310.6801) using a dark matter based analysis independent of the holographic approach used in this paper.
Highlights
Dark matter is generally believed to account for the approximately flat velocity curves characteristic of spiral galaxies
Merritt recently argued for MOdified Newtonian Dynamics (MOND) by claiming dark matter models cannot account for the MOND acceleration threshold a0 ≈ 1.2 ×10−8 cm sec2 and the ( Vobserved VNewtonian ) relation
After this paper was accepted for publication, I learned that Man Ho Chan previously reached the same conclusion using a dark matter based analysis independent of the holographic approach used in this paper
Summary
Dark matter is generally believed to account for the approximately flat velocity curves characteristic of spiral galaxies. Observations of the colliding “bullet cluster” galaxies 1E0657-56 provide further evidence for the existence of dark matter. Some physicists believe the observed flat velocity curves indicate the law of gravity must be modified at large distances according to MOdified Newtonian Dynamics (MOND). Merritt [1] argued for MOND by claiming dark matter models cannot account for the acceleration threshold a0 ≈ 1.2 ×10−8 cm sec and the ( Vobserved VNewtonian ) relation emerging from the MOND approach [2]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
