| Name: | Akash Kumar Saha |
| Affiliation: | Indian Institute of Science, Bengaluru, India |
| Conference ID : | ASI2024_209 |
| Title : | Hunting Primordial Black Hole Dark Matter in Lyman-$\alpha$ Forest |
| Authors : | Akash Kumar Saha, Priyank Parashari, Ranjan Laha |
| Authors Affiliation: | Centre for High Energy Physics, Indian Institute of Science, Bengaluru |
| Mode of Presentation: | Poster |
| Abstract Category : | Galaxies and Cosmology |
| Abstract : | Lyman-$\alpha$ forest is one of the most powerful probes of the thermal and ionization history of the intergalactic medium (IGM). Besides improving our understanding of the different aspects of reionization, Lyman-$\alpha$ forest can also help us uncover the non-gravitational nature of Dark Matter (DM). Primordial black holes (PBHs) are one of the most well-motivated DM candidates. Low-mass PBH DMs ($10^{15}$ g -$10^{18}$ g) can evaporate and produce different Standard Model (SM) particles. Due to these injected particles (mainly due to electron-positrons and photons), the thermal and ionization state of IGM is modified, which in turn affects the detected Lyman-$\alpha$ forest signal. In our work, using the existing Lyman-$\alpha$ forest datasets we obtain competitive limits on PBH DM. With more datasets in the future and improvements in the simulation front, the Lyman-$\alpha$ forest will be an excellent probe for discovering PBH DM.
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