I am a third year PhD student in Astronomy. My PhD research focuses on constraining cosmology using the high-redshift Lyman-alpha forest, a powerful tracer of matter density fluctuations in the weakly non-linear regime through the high redshift and underdense intergalactic medium. By probing small-scale physics down to ~100 kpc scales using high-resolution quasar spectra, this approach is enabling us to set stringent tests of dark matter models.
Highlighted Publications
Post-inflationary axion constraints from the Lyman-alpha forest - Garcia-Gallego et al. 2026
High resolution Lyman-α forest constraints on dark matter-neutrino scattering - M.R.Mosbesh, Garcia-Gallego et al. 2026
Constraining Mixed Dark Matter models with high redshift Lyman-alpha forest data - Garcia-Gallego et al. 2025 (PRD)
Constraints on the Thompson optical depth to the CMB from the Lyman-alpha forest - Garcia-Gallego et al. 2025b (PRResearch)
Career
2023-Present: PhD in Astronomy (University of Cambridge)
Qualifications
2018-2023: MSci in Astronomy and Physics (University of Glasgow)
Awards and Prizes
- Tannahill Bequest Prize for Best Astronomy 5M Student (University of Glasgow, 2023)
- Mackay Smith Prize for Best Combined Physics 4M Student (University of Glasgow, 2022)
