Peter Laursen

Bilde av Peter Laursen
English version of this page
Telefon +4530265969
Mobiltelefon +45 30 26 59 69
Rom 108
Besøksadresse Institute of Theoretical Astrophysics Svein Rosselands hus Sem Sælands vei 13 0371 OSLO
Postadresse Postboks 1029 Blindern 0315 OSLO

Academic interests

I'm interested in galaxies. In particular their formation, and when galaxies form they tend to emit lots and lots of a certain kind of UV light called Lyman α. Since the exact shape and strength of this spectral line is dictated by various physical processes in the interstellar (and intergalactic) medium, we can learn a lot about the physical conditions of young galaxies from Lyman α.

However, all these processes also make interpretation of Lyman α very difficult, so I model the radiative transfer of Lyman α numerically, both in hydrodynamically simulated galaxies and in more simple model galaxies (using Monte Carlo-based ray-tracing with adaptive mesh refinement).

Higher education and employment history

  • 2015-2016: Sysadmin at Dark Cosmology Centre (DARK), University of Copenhagen
  • 2012-2015: Postdoc at DARK
  • 2010-2012: Postdoc at University of Stockholm
  • 2007-2010: PhD student at DARK


Emneord: Galaxies, Radiative transfer, Interstellar medium, Intergalactic medium, High-redshift Universe, Dust


  • Laursen, Duval, & Östlin 2013, ApJ, 766, 124: "On the (Non-)Enhancement of the Lyα Equivalent Width by a Multiphase Interstellar Medium"
  • Laursen, Sommer-Larsen, & Razoumov 2011, ApJ, 728, 52: "Intergalactic Transmission and Its Impact on the Lyα Line"
  • Laursen, Sommer-Larsen, & Andersen 2009, ApJ, 704, 1640: "Lyα Radiative Transfer with Dust: Escape Fractions from Simulated High-Redshift Galaxies"
  • Laursen, Peter; Sommer-Larsen, Jesper; Milvang-Jensen, Bo; Fynbo, Johan P. U. & Razoumov, Alexei O. (2019). Lyman α-emitting galaxies in the epoch of reionization. Astronomy and Astrophysics.  ISSN 0004-6361.  627 . doi: 10.1051/0004-6361/201833645 Fulltekst i vitenarkiv.
  • Ranjan, A.; Noterdaeme, P.; Krogager, J.-K.; Petitjean, Patrick; Balashev, S. A.; Bialy, S.; Srianand, R.; Gupta, N.; Fynbo, J. P. U.; Ledoux, C. & Laursen, Peter (2018). Molecular gas and star formation in an absorption-selected galaxy: Hitting the bull’s eye at z ≃ 2.46. Astronomy and Astrophysics.  ISSN 0004-6361.  618 . doi: 10.1051/0004-6361/201833446 Fulltekst i vitenarkiv.
  • Bridge, Joanna S.; Hayes, Matthew; Melinder, Jens; Östlin, Göran; Gronwall, Caryl; Ciardullo, Robin; Atek, Hakim; Cannon, John M.; Gronke, Max Balthasar; Guaita, Lucia; Hagen, Alex; Herenz, Edmund Christian; Kunth, Daniel; Laursen, Peter; Mas-Hesse, J. Miguel & Pardy, Stephen A. (2017). The Lyα reference sample. VIII. characterizing Lyα scattering in nearby galaxies. Astrophysical Journal.  ISSN 0004-637X.  852(1) . doi: 10.3847/1538-4357/aa9932 Fulltekst i vitenarkiv.

Se alle arbeider i Cristin

  • Laursen, Peter (2018). Big Bang — en øjenvidneberetning.  ISSN 1903-301X.
  • Laursen, Peter (2018). Galakser — Universets byggesten.
  • Laursen, Peter (2018). How to build a galaxy.
  • Laursen, Peter (2018). Hvordan man bygger en galakse.
  • Laursen, Peter (2018). Modeling Lyman α emitters at z = 8.8 with UltraVISTA.
  • Laursen, Peter (2018). The Big Bang – an eyewitness account. ScienceNordic.
  • Price, Charlotte & Laursen, Peter (2018, 31. oktober). Kosmisk kollision ændrede Mælkevejens struktur for evigt. [Internett].
  • Laursen, Peter (2017). Chasing Lyman α emitters at z = 8.8 with UltraVISTA.
  • Laursen, Peter (2017). Modeling UltraVISTA observations of Lyman α emitters at z = 8.8.

Se alle arbeider i Cristin

Publisert 29. des. 2016 13:57 - Sist endret 6. mars 2019 15:32