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(Master thesis / Masteroppgave, 2016)
The universe is full of stuff we cannot see, neither directly or indirectly. We do not understand the nature of the mysterious dark matter and how it interacts with normal matter. Big Bang Nucleosynthesis (BBN) provides ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Analytical models are presented for currents along vertical magnetic field lines due to slow bulk electron motion in plasmas subject to a gravitational force. It is demonstrated that a general feature of this problem is a ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
This is a post-peer-review, pre-copyedit version of an article published in Solar Physics. The final authenticated version is available online at: http://dx.doi.org/10.1007/s11207-017-1095-2
(Doctoral thesis / Doktoravhandling, 2022)
In the standard model of the universe, the presence of a cold and dark form of matter is essential for explaining a wide range of observables, from the very largest scales such as the microwave background radiation, to ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
The role of type II spicules in the corona has been a much debated topic in recent years. This paper aims to shed light on the impact of type II spicules in the corona using novel 2.5D radiative MHD simulations, including ...
(Master thesis / Masteroppgave, 2010)
We investigate scalar-field theories with a field-dependent coupling to matter and show the existence of a chameleon mechanism. The thin-shell solutions for a spherical body are found, and used to investigate the consequences ...
(Master thesis / Hovedoppgave, 2003)
The thesis examines the relation between
the magnetic field as measured by MDI and
the continuum intensity at four different
wavelengths (1319, 1199, 1037 and 910Å) as
measured by SUMER. A method for copointing
the instruments ...
(Master thesis / Masteroppgave, 2010)
(Master thesis / Masteroppgave, 2011)
Spicules are relatively small, narrow and elongated structures that stick out above the edge of the solar disk. They are very dynamic and appear as jets that shoot out into the outer solar atmosphere. Up until recently, ...
(Master thesis / Hovedoppgave, 2005)
During inflation, the potential of the inflaton scalar field $\phi$,
drives the exponential expansion of the Universe. The nature of the
inflaton potential is presently unknown, but one hopes to learn more
from observations ...