| Name: Niranjan Reji |
| Affiliation: Raman Research Institute |
| Conference ID: ASI2026_345 |
| Title: Effects of Lyman Alpha Radiative Pressure on Hydrodynamics and Starbursts |
| Abstract Type: Poster |
| Abstract Category: Galaxies and Cosmology |
| Author(s) and Co-Author(s) with Affiliation: Niranjan Reji(Raman Research Institute, Bangalore - 560080, India), Kartick Sarkar(Raman Research Institute, Bangalore - 560080, India) |
| Abstract: Recent theoretical work suggests that radiation pressure from Lyman-alpha scattering could be a dominant form of stellar feedback within low metallicity gas, injecting potentially an order of magnitude more momentum into the ISM than ultraviolet continuum radiative pressure. This would imply that Lyman-alpha radiative pressure is dynamically important, especially when studying starbursts and hydrodynamic flows near cosmic dawn.
We present a study that couples a Monte Carlo Lyman-alpha radiative transfer solver coupled to the PLUTO hydrodynamics code to assess how Lyman-alpha momentum deposition alters gas dynamics and star-formation outcomes in primordial galactic environments.
We use this solver to quantify the conditions under which Lyman-alpha pressure drives outflows or supports gas geometries against collapse, measure its effect on star formation efficiency, and build a clearer understanding of star formation and hydrodynamic feedback in the early universe. |
