| Name: Kanan Virkar |
| Affiliation: Indian Institute of Astrophysics |
| Conference ID: ASI2026_336 |
| Title: Primordial Physics Signatures in 21 cm Signal using Morphological Statistics |
| Abstract Type: Poster |
| Abstract Category: Galaxies and Cosmology |
| Author(s) and Co-Author(s) with Affiliation: Kanan Virkar(Indian Institute of Astrophysics, Bengaluru - 560034, India), Suvedha Naik(Indian Institute of Astrophysics, Bengaluru - 560034, India), Pravabati Chingangbam(Indian Institute of Astrophysics, Bengaluru - 560034, India) |
| Abstract: The 21 cm signal from cosmic dawn and the Epoch of Reionization (EoR) encodes important information about both astrophysical processes and primordial physics, such as inflation. In this work, we use morphological statistics to explore the 21 cm signal’s
sensitivity to inflationary features and EoR dynamics simultaneously. Focusing on primordial features from particle production during inflation we run semi-numerical simulations of the 21 cm signal across redshifts, incorporating these features. Using Minkowski Functionals (MFs), we analyze the morphology of 21 cm fields: density, neutral hydrogen fraction, spin temperature, and brightness temperature. Our results show that MFs can robustly identify inflationary features and distinguish bump models from standard ones. We also explore various EoR scenarios, demonstrating that combining MFs across redshifts helps disentangle primordial signals from EoR effects. This approach opens new avenues for probing inflation with upcoming 21 cm surveys. |
