Sökning: "Accelerated Universe"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Accelerated Universe.

  1. 1. The Inflationary Universe

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Benjamin Cavcic; [2023]
    Nyckelord :general relativity; inflation; cosmology; cosmic inflation; chaotic inflation; natural inflation; eternal inflation; valley hybrid inflation;

    Sammanfattning : Astrophysical observations of the cosmic microwave background point to inconsistencies in the standard model of cosmology, and a primordial accelerated expansion of the universe known as inflation has been suggested as a solution. Unfortunately, observational evidence of inflation is lacking, and there exists hundreds of models that populate the inflationary landscape. LÄS MER

  3. 2. Gravitational Waves in Bimetric Gravity

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Erik Schildt; [2022]
    Nyckelord :;

    Sammanfattning : Understanding the cause of the accelerated expansion of the Universe is one of the most pressing issues in modern cosmology. An alternative to the LambdaCDM-model is bimetric gravity which is an extension of Einstein's theory of general relativity. LÄS MER

  4. 3. The visibility of double neutron star binaries to LISA

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Anatole Storck; [2021]
    Nyckelord :gravitational waves; LISA; neutron stars; orbital simulations; Runge-Kutta method; Physics and Astronomy;

    Sammanfattning : Double neutron star binaries (DNSBs) in the mHz gravitational wave (GW) regime are an important group of objects which the GW detector LISA will be able to observe. The detection and parametrization of these objects will help develop our current understanding of neutron star formation and evolution. LÄS MER

  5. 4. Study of Dark Matter Models in Astrophysics and Particle Physics

    Master-uppsats, Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Isabelle John; [2019]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : From astrophysical and cosmological observations, it is known that most of the matter in the Universe is dark. This matter could be explainable by new particles, not included in the Standard Model of Particle Physics. LÄS MER

  7. 5. Thermomechanical Design and Analysis of the Lisa Phase Measurement System

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Pablo Martinez Cano; [2019]
    Nyckelord :LISA; PCB; temperature; passive; aluminum; aluminium;

    Sammanfattning : Gravitational Waves (GWs) are ripples in the curvature of spacetime that propagate as waves at the speed of light while travelling basically undisturbed from the moment of their creation by accelerated masses. GWs provide unique information about astrophysical sources, such as binary systems, allowing their exploration under a wide range of masses, mass ratios and physical states inaccessible otherwise and therefore opening a new window to observe the universe. LÄS MER