Evaluating The Applicability of Quantum Gravity Theory (QGT): A ‎Comparative Analysis of NGC 2903, NGC 3198 And DDO 154‎

Authors

  • Wing To WONG

    Independent Researchers

  • Wing-Keung WONG

    Independent Researchers

How to Cite

WONG, W. T., & WONG, W.-K. (2025). Evaluating The Applicability of Quantum Gravity Theory (QGT): A ‎Comparative Analysis of NGC 2903, NGC 3198 And DDO 154‎. International Journal of Advanced Astronomy, 13(2), 1-8. https://doi.org/10.14419/005r6560

Received date: April 29, 2025

Accepted date: June 10, 2025

Published date: June 12, 2025

DOI:

https://doi.org/10.14419/005r6560

Keywords:

Dark Matter Alternatives; Galaxy Dynamics; Quantum Gravity; Rotation Curves; NGC 2903; NGC ‎‎3198; DDO 154; NGC 6503‎.

Abstract

The flat rotation curves of spiral and dwarf galaxies challenge Newtonian dynamics and motivate alternative theories beyond dark matter. Quantum Gravity Theory (QGT), which incorporates graviton-antigraviton interactions, has successfully explained the dynamics of NGC 3198 (a spiral galaxy) and DDO 154 (a dwarf galaxy) without the need for dark matter. Here, we extend QGT to the barred spiral galaxy NGC 2903 using THINGS HI data, performing a first comparative analysis across three galaxies with diverse masses and morphologies. We calculate gravitational scale-lengths ( ) and quantum-corrected velocities ( ) for NGC 2903 ( ), NGC 3198 ( ), and DDO 154 ( ). QGT reproduces all observed rotation curves with residuals <5 km/s and reduced chi-square values ( ) near 1.0. The scale-length  scales linearly with the radial center of mass ( ), following , and such a relation holds across all tested galaxies. This study affirms QGT’s extensive applicability in describing galactic dynamics without the need for dark matter, successfully spanning a two-order-of-magnitude range in stellar mass.

QGT outperforms Modified Newtonian Dynamics (MOND) and dark matter models (NFW, Burkert, Einasto) in statistical tests, consistently achieving the lowest residuals, the lowest Bayesian Information Criterion (BIC) scores, and the best predictive accuracy, thus providing a robust framework for galactic dynamics.

 

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How to Cite

WONG, W. T., & WONG, W.-K. (2025). Evaluating The Applicability of Quantum Gravity Theory (QGT): A ‎Comparative Analysis of NGC 2903, NGC 3198 And DDO 154‎. International Journal of Advanced Astronomy, 13(2), 1-8. https://doi.org/10.14419/005r6560

Received date: April 29, 2025

Accepted date: June 10, 2025

Published date: June 12, 2025