Olof Petter Nils Axel NebrinPhD student

About me

How did the first stars and galaxies form? What is the nature of dark matter and dark energy? How did the Universe begin, and how will it all end? These are some of the questions tackled by cosmology, which is the field I am working in as a PhD candidate at the Department of Astronomy. I am developing novel analytical (i.e. mainly pen and paper) and numerical (i.e. computer simulation) techniques to model essential astrophysical processes relevant for galaxy formation in the early Universe, which we can then compare to observations to test our understanding and underlying theories. While mainly focusing on the first stars and galaxies, I have fairly wide research interests covering some of the cosmological questions mentioned earlier.

Research papers:

1. O. Nebrin, A. Smith, K. Lorinc, J. Hörnquist, Å. Larson, G. Mellema, S. K. Giri (2025) Lyman-alpha feedback prevails at Cosmic Dawn: Implications for the first galaxies, stars, and star clusters, Monthly Notices of the Royal Astronomical Society, vol. 537, Issue 2, pp. 1646-1687 
2. O. Nebrin, S. K. Giri, G. Mellema (2023) Starbursts in low-mass haloes at Cosmic Dawn. I. The critical halo mass for star formation, Monthly Notices of the Royal Astronomical Society, vol. 524, Issue 2, pp. 2290-2311
3. O. Nebrin (2023) Case A or Case B? The Effective Recombination Coefficient in Gas Clouds of Arbitrary Optical Thickness, Research Notes of the AAS, vol. 7, Issue 5, id. 90.
4. O. Nebrin, R. Ghara, G. Mellema (2019) Fuzzy dark matter at cosmic dawn: new 21-cm constraints,  

   Journal of Cosmology and Astroparticle Physics, Issue 04, article id. 051 (2019)