Now showing items 184-203 of 495

• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We investigate the performance of a simple Bayesian fitting approach to correct the cosmic microwave background (CMB) B-mode polarization for gravitational lensing effects in the recovered probability distribution of the ...
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
During its four years of photometric observations, the Kepler space telescope detected thousands of exoplanets and exoplanet candidates. One of Kepler’s greatest heritages has been the confirmation and characterization of ...
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Context: The Kepler Object of Interest Network (KOINet) is a multi-site network of telescopes around the globe organised to follow up transiting planet-candidate Kepler objects of interest (KOIs) with large transit timing ...
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
• (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, 2014)
Studier av vekselvirkningsmodeller for baryonsk materie, mørk materie og mørk energi. Hovedfokus på stabilitet for universmodeller, sammenligning med observasjonelle data og konsekvenser for strukturformasjoner.
• (Master thesis / Masteroppgave, 2016)
If dark matter, after it has become non-relativistic, scatters elastically with a relativistic heat bath particle, then the resulting pressure leads to acoustic oscillations that suppress the growth of overdensities in the ...
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
SDSS J2222+2745 is a galaxy cluster at z = 0.49, strongly lensing a quasar at z = 2.805 into six widely separated images. In recent Hubble Space Telescope imaging of the field, we identify additional multiply lensed galaxies ...
• (Master thesis / Masteroppgave, 2015)
In 2013 a new metric called TARDIS was introduced. This metric was published by Tippet and Tsang, and described a time machine. This thesis uses numerical methods to explore properties of this new metric. We start by ...
• (Master thesis / Masteroppgave, 2019)
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
We present detailed characteristics of linear polarization features (LPFs) in the quiet-Sun photosphere from high-resolution observations obtained with SUNRISE/IMaX. We explore differently treated data with various noise ...
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Cosmological local observables are at best statistically determined by the fundamental theory describing inflation. When the scalar inflaton is coupled uniformly to a collection of subdominant massless gauge vectors, ...
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Direct collapse black holes forming in pristine, atomically cooling haloes at z ≈ 10–20 may act as the seeds of supermassive black holes (BHs) at high redshifts. In order to create a massive BH seed, the host halo needs ...
• (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We stack the rest-frame ultraviolet spectra of N = 14 highly magnified gravitationally lensed galaxies at redshifts $1.6\lt z\lt 3.6$. The resulting new composite spans $900\lt {\lambda }_{\mathrm{rest}}\lt 3000$ Å, with ...