Essays about: "mörk materia"

Showing result 21 - 25 of 43 essays containing the words mörk materia.

  1. 21. The astronomical consequences of primordial black holes

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Loke Lönnblad Ohlin; [2019]
    Keywords : Physics and Astronomy;

    Abstract : In the radiation or early matter dominated eras of the Universe, there is a theoretical possibility for the formation of black holes (BHs). These primordial black holes (PBHs) have been thought of as a possible candidate for dark matter (DM), and an attractive one at that as it would explain DM using only baryonic physics. READ MORE

  3. 22. Event Generators and Light Dark Matter

    University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Michal Nowak; [2019]
    Keywords : Event Generators; Dark Matter; Particle Kinematics; Particle Scattering; Physics and Astronomy;

    Abstract : Recently, a number of experiments have been proposed with the aim of finding light dark matter. In particular, the proposed LDMX experiment is meant to utilize electron scattering off metal nuclei to excite dark matter emissions. Motivated by this, we construct an event generator for electrons scattering off metal nuclei. READ MORE

  4. 23. Investigating Gas Turbulence in Galactic Discs

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Timmy Ejdetjärn; [2019]
    Keywords : galaxies; gas; turbulence; interstellar medium; star formation; feedback; gravitational instability; local; high redshift; Physics and Astronomy;

    Abstract : The interstellar medium of both local and distant disc galaxies is observed to be supersonically turbulent and the turbulent motion of the gas is thought to be important for galaxy formation and evolution, particularly as a key ingredient for star formation. Consequently, this generates a striking relation between the star formation rate (SFR) and gas velocity dispersion ($\sigma_{\rm g}$; a measurement on the level of turbulence). READ MORE

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

    University essay from Uppsala universitet/Teoretisk fysik

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

    Abstract : 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. READ MORE

  6. 25. Doubly Charged Higgs Signal with Same-Sign Tau-inclusive Dilepton Final States

    University essay from Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Simon Arnling Bååth; [2018]
    Keywords : ATLAS; same-sign; dilepton; higgs; LHC; signal sample; Physics and Astronomy;

    Abstract : Abstract The current Standard Model of particle physics contains few interactions resulting in a final state with two leptons with the same charge. Any observation of an excess of such same-sign dileptons would be an indication of new physics processes, making it a useful channel when searching for exotic physics. READ MORE