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Galactic Dynamics of Dwarf Spheroidal Galaxies Under MOND Model and External Field Effect MOND Model

Cheng, Haonan
http://orcid.org/0009-0009-5635-4733
http://rave.ohiolink.edu/etdc/view?acc_num=miami172672810136924

Abstract Details

, Master of Science, Miami University, Physics.
In this thesis paper, we are going to discuss the galactic dynamics under the classical Newtonian model, MOND model, and MOND+EFE model. Because the effective range of gravity can reach infinity, the system of each DSPH galaxy will suffer from the external field effect. Under EFE, the dynamics of stars inside the DSPH galaxy will shift from MOND pattern to Newtonian pattern. So, in this thesis, we will compare dynamics of three DSPH galaxies under Newtonian, MOND, and MOND+EFE models. Moreover, I will compare the observational data from (Walker 2009) with simulated results. For the simulation, I will use the Plummer mass distribution model for the simulated DSPH galaxy. For computing the stellar dynamics inside the DSPH galaxy, we will use the Hermite Individual Time Step technique. For the Line of Sight dispersion, it is generated based on the statistics of simulated data. Comparing the simulated result with the observational result from (Walker 2009), we found that the observational result is a bit messy but it generally agrees with the MOND+EFE model if it is under correct mass-light ratio.
Stephen Alexander (Advisor)
Mahmud Khan (Committee Member)
Imran Mirza (Committee Member)
35 p.
Astrophysics; Physics

Recommended Citations

Citations

  • Cheng, H. (2024). Galactic Dynamics of Dwarf Spheroidal Galaxies Under MOND Model and External Field Effect MOND Model [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami172672810136924

    APA Style (7th edition)

  • Cheng, Haonan. Galactic Dynamics of Dwarf Spheroidal Galaxies Under MOND Model and External Field Effect MOND Model . 2024. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami172672810136924.

    MLA Style (8th edition)

  • Cheng, Haonan. "Galactic Dynamics of Dwarf Spheroidal Galaxies Under MOND Model and External Field Effect MOND Model ." Master's thesis, Miami University, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=miami172672810136924

    Chicago Manual of Style (17th edition)

miami172672810136924
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This open access ETD is published by Miami University and OhioLINK.