A Theory for Galaxy Formation: Innovative Model for Evolution of Galaxies as a Function in the Initial Cloud 2π and 4π Geometry and Acceleration


  • Sayed El-Mongy Egypt Nuclear Regulatory Authority




galaxy mass, Sayed`s galaxy formation formula, 2π and 4π geometry, Galaxy formation model


The Big Bang idea is referred in the glorious Quran. As a matter of fact, there is no single integrated model describing the formation of all type of the galaxies. This work proposes a new theory and equations describing the controlling conditions and parameters of stars and galaxies formation. The derived equation called, Sayed`s galaxy formation formula (SGFF), shows that the formation of the major disk (spiral) and elliptical galaxies is correlated to the 2π and 4π geometry of the initial cloud. Sayed`s temperature (Ts) , pressure (Ps) and radius (Rs) are among the effective parameters of galaxies formation. The mass of galaxy (Sayed`s galaxy mass formula- SGME) was also deduced based on acceleration and expansion and given as a new formula. The formulas were validated and verified by check of the units and comparison with the declared values. The minimum mass (0.0774Mʘ) for star formation was calculated and found to be fully matched with the reference range; 0.075 – 0.08 solar mass, for 4π geometry. The gas halo mass of the Milky Way was calculated with ~2 % discrepancy. Our previous article; Dark matter-energy to Hydrogen-helium ratio should be considered in galaxy formation mechanism and calculation.


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The formation of galaxy: Australian Telescope National Facility (ATNF) https://www.atnf.csiro.au/outreach/education/senior/cosmicengine/galaxy_formation.html

Sayed Ali El-Mongy, 2022, “ Unity of the Universe: New and Global Theory Correlating the Ratio of Hydrogen - Helium to Dark Energy – Matter: Sayed`s Golden Formula (SGF)” Journal of Advances in Physics Vol 20 (2022) ISSN: 2347-3487. DOI: https://doi.org/10.24297/jap.v20i.9246

Sayed Ali El-Mongy, (2022) “Creator of the Universe Adjusted the Dark Energy/Dark Matter Ratio and Baryons to be Function In π and eπ: Predicted and Deciphered by Sayed’s Theorem‖, Journal of Advances in Physics Vol2O ISSN: 2347-3487, DOI: https://doi.org/10.24297/jap.v20i.9223

Sayed A. El-Mongy, (2021), “Revolutionary Approach for Fusion of the Classic, Relativity and Quantum field Theories: Sayed’s Acceleration Equation and Probable Violation of E=mc2 “, Journal of Advances in Physics, Vol 19. DOI: https://doi.org/10.24297/jap.v19i.9048

Sayed A. El-Mongy, (2020), “Hawking Radiation is Nothing: Developed Correlation of Entropy with Black Hole Area‖, Journal of Advances in Physics Vol 18. DOI:https://doi.org/10.24297/jap.v18i.8905

Sayed Ali El-Mongy, (2020), “New Theorem and Formula for Circle Arc Length Calculations with Trigonometric Approach Application in Astrophysics‖, Journal of Advances in Physics Vol 17 DOI: https://doi.org/10.24297/jap.v18i.8914

Sayed A. El-Mongy, (2021), “Proposed Innovative Correlations for some Nuclear and Radiological Fields using Theorem of S. El-Mongy‖, Journal of Advances in Physics Vol 19 DOI: https://doi.org/10.24297/jap.v19i.8946.

Sayed A. El-mongy, (2022), ”Innovative Theoretical Correlation of eπ with Mass, Number of Atoms and Enrichment Percentage (%E) Using Sayed’s Enrichment Formula‖, Journal of Advances in Physics Vol 20 DOI: https://doi.org/10.24297/jap.v20i.9180

Sayed A. El-Mongy, 2022, “Novel Arithmetic Equations for Mass Energy Equivalence, Newton’s Rings Radius, Wavelength and Speed of Light, Fine Structure Constant and Ideal Gas Law Correlated with eπ Based on Sayed’s Theorem”, Journal of Advances in Physics Vol 20 https://doi.org/10.24297/jap.v20i.9214.


Kim Coble, Kevin McLin, & Lynn Cominsky,2022 “Big Ideas in Cosmology”, San Francisco State University, Chico State, University, & Sonoma State University, LibreTexts, USA.


Nils Wittenburg, Pavel Kroupa , and Benoit Famaey, “The Formation of Exponential Disk Galaxies in MOND”, The Astrophysical Journal, 890:173 (27pp), 2020 February 20 © 2020. The American Astronomical Society. https://doi.org/10.3847/1538-4357/ab6d73

IvyPanda, 2022, “Theories of Galaxy Formation and Evolution Essay”, IvyPanda, Apr 26th. https://ivypanda.com/essays/theories-of-galaxy-formation-and-evolution/

Houjun Mo, Frank Van D. Bosch and Simon White, 2010, “Galaxy Formation and Evolution”, Cambridge University Press, Cambridge CB2 8RU, UK

Anatomy of Milky way, 2020, https://aasnova.org/2020/06/09/how-do-you-weigh-a-galaxy/ By Astrobites .Published in ApJ

Ignacio Ferreras,2019,“Fundamentals of Galaxy Dynamics, Formation and Evolution”,UCL Press,UK.

Bradley W. Carroll , Dale A. Ostlie ,2017,“An Introduction to Modern Astrophysics”, Second Edition, Cambridge University Press. 7th printing 2020 (Summary).



J. Michael Owen , Jens V. Villumsen, 1997, “Baryons, Dark Matter, and the Jeans Mass in Simulations of Cosmological Structure Formation”:, The Astrophysical Journal 481:121.


Richard Brill, 1999, “ How is a star born ? “, Scientific American, Springer Nature America, INC.



https://www.astronomy.ohio-state.edu/thompson.1847/1101/lecture_star_formation.html, 2014



Lorenzo Posti and Amina Helmi, 2019, ”Mass and shape of the Milky Way’s dark matter halo with globular clusters from Gaia and Hubble”, Astronomy and Astrophysics, A&A , V.621, A56

Sci.news,2020,”Milky Way’s Halo Hotter than Previously Thought”, science news/astronomy https://www.sci.news/astronomy/hot-milky-ways-halo.




How to Cite

El-Mongy, S. (2022). A Theory for Galaxy Formation: Innovative Model for Evolution of Galaxies as a Function in the Initial Cloud 2π and 4π Geometry and Acceleration. JOURNAL OF ADVANCES IN PHYSICS, 20, 192–300. https://doi.org/10.24297/jap.v20i.9280