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Degeneracies between Modified Gravity and Baryonic Physics Begrenset tilgang
(Master thesis / Masteroppgave, 2017)
In order to determine the observable signatures of modified gravity theories, it is important to consider the effect of baryonic physics. We use a modified version of the ISIS code to run cosmological hydrodynamic simulations ...
(Master thesis / Masteroppgave, 2017)
Following the discovery of the late-time acceleration, a multitude of extensions to General Relativity have been developed, seeking to shed light on this new phenomenon. Some of these models involve couplings to ordinary ...
(Master thesis / Masteroppgave, 2017)
The Next Generation Transit Survey (NGTS) is an ongoing wide-field exoplanet transit survey at ESO Paranal Observatory, Chile. It is searching for Neptune and super-Earth size planets around nearby stars using 12 robotic ...
(Master thesis / Masteroppgave, 2017)
In order to estimate the mass of supermassive black holes found in the centres of active galactic nuclei (AGNs) from spectroscopic data, the contamination from the light emitted by the stars in the surrounding host galaxy ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The 2014 March 29 X1 solar flare (SOL20140329T17:48) produced bright continuum emission in the far- and near-ultraviolet (NUV) and highly asymmetric chromospheric emission lines, providing long-sought constraints on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The broadening of the hydrogen lines during flares is thought to result from increased charge (electron, proton) density in the flare chromosphere. However, disagreements between theory and modeling prescriptions have ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The C i 135.58 nm line is located in the wavelength range of NASA's Interface Region Imaging Spectrograph (IRIS) small explorer mission. We study the formation and diagnostic potential of this line by means of non ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
A spectacular manifestation of solar activity is the appearance of transient brightenings in the far wings of the Hα line, known as Ellerman bombs (EBs). Recent observations obtained by the Interface Region Imaging ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The characterization of the Galactic foregrounds has been shown to be the main obstacle in thechallenging quest to detect primordial B-modes in the polarized microwave sky. We make use of the Planck-HFI 2015 data release ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The Chromospheric Lyman-Alpha Spectro-Polarimeter is a sounding rocket experiment that has provided the first successful measurement of the linear polarization produced by scattering processes in the hydrogen Lyα line ...