Sökning: "Cosmology"

Visar resultat 1 - 5 av 51 uppsatser innehållade ordet Cosmology.

  1. 1. Chi-Squared Analysis of Measurements of Two Cosmological Parameters Over Time

    Master-uppsats, Uppsala universitet/Observationell astrofysik

    Författare :Timothy Faerber; [2019]
    Nyckelord :Cosmology Chi Squared Hubble Constant Amplitude of Mass Fluctuations Statistical Analysis;

    Sammanfattning : For this project, a historical statistical analysis of the Amplitude of Mass Fluctuations ($\sigma_8$) and Hubble's Constant ($H_0$) parameters in the Standard Cosmological Model was carried out to determine whether or not the given error bars truly represent the dispersion of values. It was found through analysis of the Chi-Squared ($\chi^2$) values of the data that for $\sigma_8$ (60 data points and $\chi^2$ between 183. LÄS MER

  2. 2. Weak Lensing of Type Ia Supernovae

    Kandidat-uppsats, Stockholms universitet/Institutionen för astronomi

    Författare :Nicolas Risberg; [2019]
    Nyckelord :;

    Sammanfattning : Studying weak gravitational lensing of type Ia supernovae is a valuable tool to have in cosmology. Gravitational lensing may amplify the brightness of the source, affecting the brightness distribution of observed supernovae in a non-Gaussian way. Testing this magnified distribution for normality may thus reveal the observation of weak lensing. LÄS MER

  3. 3. Galaxy clusters and cosmic voids in modified gravity scenarios

    L3-uppsats, Uppsala universitet/Teoretisk astrofysik

    Författare :Sveva Castello; [2019]
    Nyckelord :Cosmology; galaxy clusters; cosmic voids; f R gravity;

    Sammanfattning : The so-called 'cosmic web', comprising cosmic voids and galaxy clusters, has been proven to be extremely sensitive to deviations from General Relativity. This could be further investigated by future large-scale surveys, such as with the European Space Agency satellite Euclid. LÄS MER

  4. 4. Cosmological probes of the early universe with Axions & Gravitational Waves

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Teoretisk fysik

    Författare :Nicklas Ramberg; [2019]
    Nyckelord :axions; early universe; dark matter; gravitational waves; modified cosmology; cosmic strings; axion; tidigt universum; mörk materia; gravitationsvågor; modifierad kosmologi; kosmiska strängar;

    Sammanfattning : This thesis uses theoretical studies, and numerical simulations to provide results of the experimental reach to detect the QCD axion as dark matter in a Non-standard cosmological background. Assuming that the QCD axion constitutes the full CDM abundance of the universe, this thesis elaborates on its potential detection from experimental setups for the mass window of the axion. LÄS MER

  5. 5. Jagt, sex og død. Et studie af airo-pais jagtritualer i amazonskoven

    Master-uppsats, Lunds universitet/Sociologiska institutionen; Lunds universitet/Socialantropologi

    Författare :Lasse Schiøtt; [2019]
    Nyckelord :Social Anthropology. Airo-pai. Cosmology. Hunting. Phenomenology. Ontology.; Social Sciences;

    Sammanfattning : The aim of this study is to explore relations between the Amazonian indigenous people Airo-pai and the animals and spirits inhabiting their natural environment. The thesis analyzes how non-human animals and spirits interact with Airo-pai during rituals and subsistence activities in their everyday life. LÄS MER