Essays about: "kosmologi"

Showing result 11 - 15 of 17 essays containing the word kosmologi.

  1. 11. Tidal Streams as a Probe of the Milky Way Assembly History

    University essay from Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Espen Kirkesæther Brun; [2016]
    Keywords : Astrophysics; Astronomy; Dynamics; Galactic; Tidal Streams; Stellar Streams; Dark Matter; Subhalos; Physics and Astronomy;

    Abstract : The current Lambda Cold Dark Matter cosmology predicts galaxy growth by hierarchical merging, leading to galaxy substructure like tidal streams and dark matter subhalos devoid of stars. The goal of this thesis is to investigate whether tidal stream-subhalo interactions can leave observable gaps in the streams, and at which rate this might happen in a galaxy like the Milky Way. READ MORE

  3. 12. 3+1 Approach to Cosmological Perturbations : Deriving the First Order Scalar Perturbations of the Einstein Field Equations

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Söderkvist Vermelin Wilhelm; [2016]
    Keywords : physics; astronomy; theoretical physics; perturbation; cosmology; cosmological perturbations; 3 1 formalism; first order perturbation; perturbation theory; universe; fysik; astronomi; teoretisk fysik; störning; störningsräkning; kosmologi; kosmologiska störningar; kosmologisk störningsräkning; 3 1 formalismen; första ordningens störningar; störningsteori; universum;

    Abstract : Experimental data suggest that the universe is homogeneous and isotropic on sufficiently large scales. An exact solution of the Einstein field equations exists for a homogeneous and isotropic universe, also known as a Friedmann-Lemaître-Robertson-Walker (FLRW) universe. READ MORE

  4. 13. On the metastability of the Standard Model

    University essay from Uppsala universitet/Teoretisk fysik

    Author : Sebastian Baum; [2015]
    Keywords : Higgs; Standard Model; stability; metastability;

    Abstract : With the discovery of a particle consistent with the Standard Model (SM) Higgs at the Large Hadron Collider (LHC) at CERN in 2012, the final ingredient of the SM has been found. The SM provides us with a powerful description of the physics of fundamental particles, holding up at all energy scales we can probe with accelerator based experiments. READ MORE

  5. 14. Dark Ages Interferometer (DALI) Deployment Rover: Energy System

    University essay from Högskolan i Halmstad/Energiteknik

    Author : Gustav Andersson; Emil Ericsson; [2014]
    Keywords : Rover; Moon; Photovoltaics; Battery; JPL; NASA; Electric; Energy; Solceller; Månen; Batterier; JPL; NASA; Energi;

    Abstract : The cosmic “Dark Ages” is the cosmic era between the epochs of recombination of cosmic microwave background and the formation of the first stars. The only signal from this epoch is from neutral hydrogen, which could represent one of the richest data sets in cosmology. READ MORE

  6. 15. Dark Ages Lunar Interferometer (DALI): Deployment-Rover - Mobility System

    University essay from Sektionen för ekonomi och teknik (SET)

    Author : Erik Andersson; Per-Johan Bengtsson; [2013]
    Keywords : Mobility system; Lunar; rover; DALI; Interferometer;

    Abstract : This thesis is issued in collaboration with the Jet Propulsion Laboratory (JPL) in Pasadena, California. JPL's primary function is the construction and operation of robotic planetary spacecraft. At the time being JPL has 22 spacecraft and 10 instruments conducting active missions. READ MORE