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Disputation: Marie Kristine Foss

Doctoral candidate Marie K. Foss at the Institute of Theoretical Astrophysics, Faculty of Mathematics and Natural Sciences, is  defending the thesis "Mapping the Teenage Universe with COMAP" for the degree of Philosophiae Doctor.

portrait picture of Marie K. Foss

Doctoral Cand. Marie K. Foss. Photo: UiO.

The PhD defence will be fully digital and streamed directly using Zoom. The host of the session will moderate the technicalities while the chair of the defence will moderate the disputation.

Ex auditorio questions: the chair of the defence will invite the audience to ask ex auditorio questions either written or oral. This can be requested by clicking 'Participants -> Raise hand'. 

Trial lecture - time and place

"Weak gravitational lensing as a probe of cosmic history"

The recording of the trial lecture is not available anymore.

Conferral summary

Intensity mapping er en ny metode for å studere hvordan galakser har utviklet seg i løpet av universets historie. Avhandlingen beskriver et slikt eksperiment, COMAP, og hvordan vi kan gå fra rå data til kart.

Main research findings

Intensity mapping is a new method to study how galaxies have evolved during the history of the Universe. This is done by looking at the larger structures, meaning the sum of several galaxies, instead of looking at individual galaxies. We can thus include the faint galaxies, which would have been difficult to see. This will also make it easier to see if and how the structure changes over time.

One such experiment is COMAP, the CO Mapping Array Pathfinder. COMAP looks for carbon monoxide (CO), a molecule that is connected to star formation in galaxies, in galaxies during the peak of the formation of stars. This thesis gives an overview of the COMAP experiment, and explains how we can extract the CO signal from the data, with a focus on making a map to visually see the structures. Although COMAP has not reached a detection in the time of writing this thesis, our current results suggest it should be possible within a year or two.

group photo in front of a radio antenna
The COMAP collaboration in front of the telescope in Owens Valley, California.


Published Jan. 15, 2021 9:14 AM - Last modified Jan. 29, 2021 3:54 PM