Peter's Website v2.0


Welcome to my website. This is the 2nd version, now featuring nicer colors and garamond fonts. However, I still only know how to make a webpage in .html, so the most fancy stuff you'll find is probably images which are also hyperlinks.

For other languages, please click here: Dansk Español Deutsch

I am a Ph.D. student in astrophysics at the DARK Cosmology Centre, Niels Bohr Institute, working under the supervision of Anja C. Andersen and. Jesper Sommer-Larsen. The main emphasis of my studies is focused on how light, in particular Lyman α, travels through the Universe. As it turns out, dust is a very important factor in this context.

Although dust sounds as the most boring subject with which you could ever concern yourself (next to banking, investment and insurance), it is in fact interesting, at least due to two features:

  1. Dust grains stick together to form rocks which, in turn, form planets which are probably needed to form life. And life is quite interesting.
  2. Dust absorbs and scatters light, thus severely affecting all observations. To interpret correctly what we observe, it is important to know the properties of the dust lying between us and the object. Particularly in the very distant Universe, our knowledge on this is limited. Since the very distant Universe also means the very early Universe, knowing how the light travels through the dusty gas enables us, among other things, to learn about how galaxies formed. Galaxies are the fundamental building blocks of our Universe, and the Universe is also quite interesting.
More about my research can be found here. It is a continuation of my master studies, in which I investigated how light moves through dustless gas in galaxies (Lyα resonant scattering).

Although my research is mostly numerical, i.e. it takes place inside a computer (and my head), once in a while I have been lucky enough to have the opportunity to go observing, among other things the afterglows of gamma-ray bursts. Below are some nice pictures of beautiful objects of the southern sky, taken with the Danish 1.54m telescope at La Silla, Chile, when the weather conditions did not allow me to do scientific observations.

La Silla ImagesWork StuffLinks
Astronomy picture of the
  day Astronomy picture of the day
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This page was last updated on November 18., 2009. (by Den Gamle Mand fra Ribe)