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Fast generation of realistic SZ maps using machine learning methods Restricted Access
(Master thesis / Masteroppgave, 2022)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Context. Heating signatures from small-scale magnetic reconnection events in the solar atmosphere have proven to be difficult to detect through observations. Numerical models that reproduce flaring conditions are essential ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Abstract Although theoretically predicted, the simultaneous excitation of several resonant modes in sunspots has not been observed. Like any harmonic oscillator, a solar magnetic flux tube can support a variety of resonances, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
The combination and cross-correlation of the upcoming Euclid data with cosmic microwave background (CMB) measurements is a source of great expectation since it will provide the largest lever arm of epochs, ranging from ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
In December 2016, the Atacama Large Millimeter/submillimeter Array (ALMA) carried out the first regular observations of the Sun. These early observations and the reduction of the respective data posed a challenge due to ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Redshifted components of chromospheric emission lines in the hard X-ray impulsive phase of solar flares have recently been studied through their 30 s evolution with the high resolution of the Interface Region Imaging ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present a new infrared survey covering the three Euclid deep fields and four other Euclid calibration fields using Spitzer Space Telescope’s Infrared Array Camera (IRAC). We combined these new observations with all ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Context. The ESA Euclid mission will produce photometric galaxy samples over 15 000 square degrees of the sky that will be rich for clustering and weak lensing statistics. The accuracy of the cosmological constraints derived ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Context. The standard cosmological model is based on the fundamental assumptions of a spatially homogeneous and isotropic universe on large scales. An observational detection of a violation of these assumptions at any ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We quantify evolution in the cluster-scale stellar mass–halo mass (SMHM) relation's parameters using 2323 clusters and brightest central galaxies (BCGs) over the redshift range 0.03 ≤ z ≤ 0.60. The precision on the inferred ...
(Doctoral thesis / Doktoravhandling, 2022)
The Cosmic Microwave Background (CMB) radiation is the oldest signal in the universe. It teaches us about the first moments after the universe came into existence, and thus informs us about its subsequent evolution.
The ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
ABSTRACT
We present the first observation of a solar prominence at 84 − 116 GHz using the high resolution interferometric imaging of ALMA. Simultaneous observations in Hα from Białkaw Observatory and with SDO/AIA ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We use 6 yr of data from the Dark Energy Survey to perform a detailed photometric characterization of the Phoenix stellar stream, a 15° long, thin, dynamically cold, low-metallicity stellar system in the Southern Hemisphere. ...
(Master thesis / Hovedoppgave, 1999)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Abstract This paper discusses the science case for a sensitive spectro-polarimetric survey of the microwave sky. Such a survey would provide a tomographic and dynamic census of the three-dimensional distribution of hot ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
This work analyzes the Hall magnetohydrodynamics (HMHD) and magnetohydrodynamics (MHD) numerical simulations of a flaring solar active region as a test bed while idealizing the coronal Alfvén speed to be less by two orders ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Euclid is poised to survey galaxies across a cosmological volume of unprecedented size, providing observations of more than a billion objects distributed over a third of the full sky. Approximately 20 million of these ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Context. While Euclid is an ESA mission specifically designed to investigate the nature of dark energy and dark matter, the planned unprecedented combination of survey area (∼15 000 deg 2 ), spatial resolution, low ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Modern cosmic microwave background (CMB) analysis pipelines regularly employ complex time-domain filters, beam models, masking, and other techniques during the production of sky maps and their corresponding angular power ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Context. Computing spectra from 3D simulations of stellar atmospheres when allowing for departures from local thermodynamic equilibrium (non-LTE) is computationally very intensive.
Aims. We develop a machine learning ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
In this Letter, we introduce the nonlinear partial differential equation ∂2τπ∝(→∇π)2 showing a new type of instability. Such equations appear in the effective field theory (EFT) of dark energy for the k-essence model as ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
The electromagnetic energy flux in the lower atmosphere of the Sun is a key tool to describe the energy balance of the solar atmosphere. Current investigations on energy flux in the solar atmosphere focus primarily on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
ABSTRACT
In non-linear scales, the matter density distribution is not Gaussian. Consequently, the widely used two-point correlation function is not adequate anymore to capture the matter density field’s entire ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present CO(2−1) and adjacent continuum observations of seven nearby radio-quiet type-2 quasars (QSO2s) obtained with ALMA at ∼0.2″ resolution (370 pc at z ∼ 0.1). These QSO2s are luminous ( L [OIII] > 10 8.5 L ⊙ ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present a machine learning framework to simulate realistic galaxies for the Euclid Survey, producing more complex and realistic galaxies than the analytical simulations currently used in Euclid . The proposed method ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Thermal instability is a fundamental process of astrophysical plasmas. It is expected to occur whenever the cooling is dominated by radiation and cannot be compensated for by heating. In this work, we conduct 2.5D radiation ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
An accurate covariance matrix is essential for obtaining reliable cosmological results when using a Gaussian likelihood. In this paper we study the covariance of pseudo- C ℓ estimates of tomographic cosmic shear power ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Current state-of-the-art spectrographs cannot resolve the fundamental spatial (subarcseconds) and temporal (less than a few tens of seconds) scales of the coronal dynamics of solar flares and eruptive phenomena. The ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Abstract
We consider the recently proposed possibility that dark energy (DE) and baryons may scatter through a pure momentum exchange process, leaving the background evolution unaffected. Earlier work has shown ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We describe an updated calibration and diagnostic framework, Balrog, used to directly sample the selection and photometric biases of the Dark Energy Survey (DES) Year 3 (Y3) data set. We systematically inject onto the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We provide an end-to-end exploration of a distinct modified gravitational theory in Jordan-Brans-Dicke (JBD) gravity, from an analytical and numerical description of the background expansion and linear perturbations, to ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
The Euclid mission will conduct an extragalactic survey over 15 000 deg 2 of the extragalactic sky. The spectroscopic channel of the Near-Infrared Spectrometer and Photometer (NISP) has a resolution of R ~ 450 for its blue ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We report the combined results of eight searches for strong gravitational lens systems in the full 5000 square degrees of Dark Energy Survey (DES) observations. The observations accumulated by the end of the third observing ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations of the full 2500 deg2 South Pole Telescope (SPT)-Sunyaev–Zel'dovich cluster sample. We describe a process for identifying ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Large-scale astronomical surveys have the potential to capture data on large numbers of strongly gravitationally lensed supernovae (LSNe). To facilitate timely analysis and spectroscopic follow-up before the supernova ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present a search for outer solar system objects in the 6 yr of data from the Dark Energy Survey (DES). The DES covered a contiguous 5000 deg2 of the southern sky with ≈80,000 3 deg2 exposures in the grizY filters between ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
ABSTRACT
We present morphological classifications of ∼27 million galaxies from the Dark Energy Survey (DES) Data Release 1 (DR1) using a supervised deep learning algorithm. The classification scheme separates: ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We numerically and analytically explore the background cosmological dynamics of multifield dark energy with highly nongeodesic or “spinning” field-space trajectories. These extensions of standard single-field quintessence ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We report on the presence of numerous tiny bright dots in and around an emerging flux region (an X-ray/coronal bright point) observed with SolO's EUI/HRIEUV in 174 Å. These dots are roundish and have a diameter of 675 ± ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Line intensity mapping (LIM) is a new technique for tracing the global properties of galaxies over cosmic time. Detection of the very faint signals from redshifted carbon monoxide (CO), a tracer of star formation, pushes ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present a tomographic measurement of the cross-correlation between thermal Sunyaev-Zel’dovich (TSZ) maps from Planck and the Atacama Cosmology Telescope and weak galaxy lensing shears measured during the first three ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Using the first three years of data from the Dark Energy Survey (DES), we use ratios of small-scale galaxy-galaxy lensing measurements around the same lens sample to constrain source redshift uncertainties, intrinsic ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
The NISP (Near Infrared Spectrometer and Photometer) is one of the two Euclid instruments (see ref [1]). It operates in the near-IR spectral region (950-2020nm) as a photometer and spectrometer. The instrument is composed ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
The CO Mapping Array Project (COMAP) aims to use line-intensity mapping of carbon monoxide (CO) to trace the distribution and global properties of galaxies over cosmic time, back to the Epoch of Reionization (EoR). To ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present and characterize the galaxy-galaxy lensing signal measured using the first three years of data from the Dark Energy Survey (DES Y3) covering 4132 deg2. These galaxy-galaxy measurements are used in the DES Y3 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
ABSTRACT
We measure the velocity dispersions of clusters of galaxies selected by the red-sequence Matched-filter Probabilistic Percolation (redMaPPer) algorithm in the first three years of data from the Dark ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
The current and future cosmic microwave background (CMB) experiments fielding kilopixel arrays of transition-edge sensor (TES) bolometers require accurate and robust gain calibration methods. We simplify and refactor the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We analyzed spectropolarimetric data from the Swedish 1 m Solar Telescope to investigate the physical properties of small-scale magnetic cancellations in the quiet Sun photosphere. Specifically, we looked at the full Stokes ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present the results of a full cosmological simulation with the new code SCALAR , where dark matter is in the form of fuzzy dark matter (FDM), described by a light scalar field with a mass of m B = 2.5 × 10 −22 eV and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
The nucleosynthesis production of fluorine (F) is still a matter of debate. Asymptotic giant branch (AGB) stars are one of the main candidates for F production. However, their contribution to the total F budget is not fully ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
ABSTRACT
Photometric data can be analysed using the 3D correlation function ξp to extract cosmological information via e.g. measurement of the Baryon Acoustic Oscillations (BAO). Previous studies modeled ξp ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Aims. We investigate the atmospheric response to coronal heating driven by random velocity fields with different characteristic time scales and amplitudes.
Methods. We conducted a series of three-dimensional magnetohydrodynamic ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We introduce COMAP-EoR, the next generation of the Carbon Monoxide Mapping Array Project aimed at extending CO intensity mapping to the Epoch of Reionization. COMAP-EoR supplements the existing 30 GHz COMAP Pathfinder with ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present early results from the CO Mapping Array Project (COMAP) Galactic Plane Survey conducted between 2019 June and 2021 April, spanning 20° < ℓ < 40° in Galactic longitude and ∣b∣ < 1fdg5 in Galactic latitude with ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Context: An activity indicator, which can provide a robust quantitative mapping between the stellar activity and the physical properties of its atmosphere, is important in exploring the evolution of the observed active ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present the current state of models for the z ∼ 3 carbon monoxide (CO) line intensity signal targeted by the CO Mapping Array Project (COMAP) Pathfinder in the context of its early science results. Our fiducial model, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We describe the first-season CO Mapping Array Project (COMAP) analysis pipeline that converts raw detector readouts to calibrated sky maps. This pipeline implements four main steps: gain calibration, filtering, data ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present cosmological constraints from the analysis of angular power spectra of cosmic shear maps based on data from the first three years of observations by the Dark Energy Survey (DES Y3). Our measurements are based ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present new constraints on the frequency dependence of the cosmic birefringence angle from the Planck Data Release 4 polarization maps. An axion field coupled to electromagnetism predicts a nearly frequency-independent ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Context. Ambipolar diffusion is a process occurring in partially ionised astrophysical systems that imparts a complicated mathematical and physical nature to Ohm’s law. The numerical codes that solve the magnetohydrodynamic ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
ABSTRACT
Cosmological information from weak lensing surveys is maximized by sorting source galaxies into tomographic redshift subsamples. Any uncertainties on these redshift distributions must be correctly ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present high signal-to-noise measurements of three-point shear correlations and the third moment of the mass aperture statistic using the first 3 years of data from the Dark Energy Survey. We additionally obtain the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Aims. We investigate the importance of lensing magnification for estimates of galaxy clustering and its cross-correlation with shear for the photometric sample of Euclid . Using updated specifications, we study the impact ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
Hot, ionized gas leaves an imprint on the cosmic microwave background via the thermal Sunyaev-Zel’dovich (tSZ) effect. The cross-correlation of gravitational lensing (which traces the projected mass) with the tSZ effect ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We use a recent census of the Milky Way (MW) satellite galaxy population to constrain the lifetime of particle dark matter (DM). We consider two-body decaying dark matter (DDM) in which a heavy DM particle decays with ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
In order to bridge the gap between heliospheric and solar observations of coronal mass ejections (CMEs), one of the key steps is to improve the understanding of their corresponding magnetic structures like the magnetic ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We investigate the presence of ionized gas outflows in a sample of 141 main-sequence star-forming galaxies at 1.2 < z < 2.6 from the KLEVER (KMOS Lensed Emission Lines and VElocity Review) survey. Our sample covers an ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
In this work, we present the galaxy clustering measurements of the two DES lens galaxy samples: a magnitude-limited sample optimized for the measurement of cosmological parameters, maglim, and a sample of luminous red ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We present angular diameter measurements obtained by measuring the position of baryon acoustic oscillations (BAO) in an optimized sample of galaxies from the first three years of Dark Energy Survey data (DES Y3). The sample ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
We constrain the matter density Ωm and the amplitude of density fluctuations σ8 within the ΛCDM cosmological model with shear peak statistics and angular convergence power spectra using mass maps constructed from the first ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Our ability to model the shapes and strengths of iron lines in the solar spectrum is a critical test of the accuracy of the solar iron abundance, which sets the absolute zero-point of all stellar metallicities. We use an ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
© 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Solar “magnetic tornadoes” are produced by rotating magnetic field structures that extend from the upper convection zone and the photosphere to the corona of the Sun. Recent studies show that these kinds of rotating features ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We investigate the contribution of outer H i disks to the observable population of merging black hole binaries. Like dwarf galaxies, the outer H i disks of spirals have low star formation rates and lower metallicities than ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Magnetic reconnection is thought to drive a wide variety of dynamic phenomena in the solar atmosphere. Yet, the detailed physical mechanisms driving reconnection are difficult to discern in the remote sensing observations ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Future solar missions and ground-based telescopes aim to understand the magnetism of the solar chromosphere. We performed a supporting study in Quintero Noda et al. focused on the infrared Ca ii 8542 Å line and we concluded ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Using the Eris zoom-in cosmological simulation of assembly of a Milky Way analogue, we study the chemical enrichment of stars due to accretion of metal-enriched gas from the interstellar medium (ISM) during the Galaxy's ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
© 2017. The American Astronomical Society. All rights reserved.
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We compare 237 Lyman-α (Lyα) spectra of the MUSE-Wide survey to a suite of radiative transfer simulations consisting of a central luminous source within a concentric, moving shell of neutral gas, and dust. This six parameter ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
line (121.6 nm). The instrument was successfully launched on 3 September 2015 and observations were conducted at the solar disc center and close to the limb during the five-minutes flight. In this article, the disc center ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
© 2017 American Physical Society
(Master thesis / Masteroppgave, 2006)
Two galaxy clusters, Abell 1351 and Abell 1995, are examined using weak gravitational lensing
techniques. Mass maps are created, and the clusters' density and shear profiles are compared to
theoretical predictions.
Gravitational ...
(Master thesis / Masteroppgave, 2011)
The existence of dark matter is a well established fact both due to galaxy rotation curves and also due to the CMB temperature anisotropies and the matter power spectra. According to the $\Lambda$CDM model, the so called ...
(Master thesis / Masteroppgave, 2010)
In this thesis the correlation between star formation and dynamical state of a statistical well defined selection of galaxy clusters have
been studied. From simulations and theory it is expected strong
correlations between ...
(Master thesis / Masteroppgave, 2007)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We present rest-frame ultraviolet and optical spectroscopy of the brightest lensed galaxy yet discovered, at redshift z = 2.4. The source reveals a characteristic triple-peaked Lyman α profile that has been predicted in ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Recent observations show that the buildup and triggering of minifilament eruptions that drive coronal jets result from magnetic flux cancelation at the neutral line between merging majority- and minority-polarity magnetic ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
The Vainshtein mechanism, present in many models of gravity, is very effective at screening dark matter haloes such that the fifth force is negligible and general relativity is recovered within their Vainshtein radii. ...
(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 ...
(Master thesis / Masteroppgave, 2019)
Late time accelerated expansion of the universe is usually considered to be the result of dark energy, and the standard model of cosmology implements the cosmological constant as the drive of the acceleration of the universe. ...