Search for dissertations about: "strong gravitational lensing"

Found 2 swedish dissertations containing the words strong gravitational lensing.

2. 1. Supernovae seen through gravitational telescopes

   Author : Tanja Petrushevska; Rahman Amanullah; Ariel Goobar; Saurabh Jha; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; supernovae; strong gravitational lensing; star formation history; supernova rates; supernovor Gravitationslins; fysik; Physics;

   Abstract : Galaxies, and clusters of galaxies, can act as gravitational lenses and magnify the light of objects behind them. The effect enables observations of very distant supernovae, that otherwise would be too faint to be detected by existing telescopes, and allows studies of the frequency and properties of these rare phenomena when the universe was young. READ MORE

4. 2. Observations of submillimeter galaxies and of the Sunyaev-Zeldovich effect toward clusters of galaxies

   Author : Daniel Johansson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : This thesis describes observations of a population of high-redshift, dusty star-forming galaxies: thesubmillimeter (submm) galaxies. The submm galaxies detected so far are very massive and lumi-nous systems, with huge star-formation-rates (SFR>100Myr−1), large reservoirs of moleculargas (Mgas∼1×1010M) and large dynamical masses (Mdyn>1010M). READ MORE