Peter Laursen

Image of Peter Laursen
Norwegian version of this page
Phone +4530265969
Visiting address Institute of Theoretical Astrophysics Svein Rosselands hus Sem Sælands vei 13 0371 OSLO
Postal address 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


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


  • Laursen et al. 2019, A&A, 627, A84: "Lyman α-emitting galaxies in the epoch of reionization"
  • 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"

View all works in Cristin

  • Laursen, Peter (2020). Hvordan bygger man en galakse?.
  • Laursen, Peter (2019, 20. august). AK-24syv (interview about beta Pictoris c). [Radio].
  • Laursen, Peter (2019). Cooling radiation from cold accretion.
  • Laursen, Peter (2019, 02. juni). Er der flere stjerner i universet end sandkorn på Jordens strande?. [Internett].
  • Laursen, Peter (2019, 05. juni). Er det flere stjerner i universet enn sandkorn på alle strender på jorden?. [Internett].
  • Laursen, Peter (2019). Kosmologi.
  • Laursen, Peter (2019). Kosmologi.
  • Laursen, Peter (2019). Kosmologi og galakser.
  • Laursen, Peter (2019). Lyman α — a window to the distant Universe.
  • Laursen, Peter (2019). Lyman α — a window to the distant Universe.
  • Laursen, Peter (2019, 05. oktober). Lørdagsliv (interview about the autumn night sky). [Radio].
  • Laursen, Peter (2019, 20. juli). Opptur. [Radio].
  • Laursen, Peter (2019, 25. september). Planetarium fejrer 30 år med Per Vers, Science Slam og bobler. [TV].
  • Laursen, Peter (2019). Science slam.
  • Laursen, Peter (2019). TED talk: Galakser.
  • Laursen, Peter (2019, 14. april). Troen på en flat jord. [Internett].
  • 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.

View all works in Cristin

Published Dec. 29, 2016 2:18 PM - Last modified July 8, 2019 2:46 PM