| Name: Vivek Baruah Thapa |
| Affiliation: Bhawanipur Anchalik College |
| Conference ID: ASI2026_14 |
| Title: Investigating Oscillation Modes in Dark Matter-Enriched Neutron Stars |
| Abstract Type: Poster |
| Abstract Category: High Energy Phenomena, Fundamental Physics and Astronomy |
| Author(s) and Co-Author(s) with Affiliation: Vivek Baruah Thapa(Birangana Sati Sadhani Rajyik Vishwavidyalaya, Golaghat - 785621, India) |
| Abstract: Due to their immense densities and strong gravitational fields, compact astrophysical objects like neutron stars serve as promising environments for capturing dark matter particles. Assuming only gravitational interactions between dark matter and ordinary hadronic matter, we model hybrid stars composed of two distinct fluid components. These models are constructed under the guidance of existing astrophysical bounds on maximum mass and tidal deformability. A broad set of parameters is explored to define the dark matter equation of state, while the hadronic matter is described using the DD-ME2 framework. We analyse how the presence of dark matter influences various stellar properties, including structure, tidal responses, and non-radial oscillation modes, employing the relativistic Cowling approximation. Our results reveal a significant impact on the pressure-driven (p-) modes, with their frequencies often shifting toward the typical range of fundamental (f-) mode frequencies in stars with surrounding dark matter halos. In contrast, the f-mode frequencies exhibit relatively modest changes. We also identify the dark matter parameter values that best align with current observational data. |
