Reconciling the differences in the observations of the rotation curves of dwarf galaxies and their predicted values based on the ΛCDM.
POSTER
Abstract
Dark matter has been a puzzling subject that has intrigued astronomers to date. There have been a variety of models to explain its nature; the ΛCDM (Cold Dark Matter Model) is by far the best candidate. However, one of the major problems with this theory is the unreproducible diversity of the rotation curves of dwarf galaxies and significant discrepancy between the model predictions and observations. Using one of the newer generation cosmological simulations, FIRE-2 (Feedback in Realistic Environments), we test whether feedback mechanisms are the major cause of this disagreement. With these data, we will determine if the absence of active galactic nucleus feedback hinders or helps the inconsistencies seen in the dwarf rotation curves from simulations and observations.
Publication: I plan to publish this research as part of an unreferred publication in the next few months and hopefully wrap up this research by early spring of 2026, so I can publish my Senior Honors Thesis as part of my Departmental Honors project. I am also planning to publish an early version of the work as an unrefereed publication for research notes on AAS.
Presenters
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Ahabar Hossain
Texas Christian University
Authors
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Ahabar Hossain
Texas Christian University
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Michelle Berg
Texas Christian University