Sökning: "liv på andra planeter"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden liv på andra planeter.

1. 1. Starshades: Geoengineering Solutions and Technosignatures in Direct Imaging Phase Curves

   Kandidat-uppsats, Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

   Författare :Claudia Skoglund; [2023]
   Nyckelord :Starshades; extraterrestrial intelligence; stellar evolution; technosignatures; phase curves; direct imaging; habitable zone.; Physics and Astronomy;

   Sammanfattning : The stellar luminosity increases as a star evolves which inevitably yields a higher temperature on planets in orbit around the star. It is reasonable to assume that intelligent civilizations would tackle this issue through installing artificial structures that can alter the radiation received by the planet. LÄS MER

3. 2. Galactic Dynamics and the spread of Galactic Civilisations

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Markus Strickert; [2020]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : Abstract The idea of the spread of life through the galaxy is, in most minds, considered science fiction. Yet, scientists argue that most galaxies have had more than enough time for civilisation development and space travel. LÄS MER

4. 3. Europa's Lyman-Alpha Shadow on Jupiter

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Johan Ferm; [2020]
   Nyckelord :Europa moon ; Jupiter; water; plumes; Solar System; planets; satellites; hydrogen; Lyman-alpha; Europa måne ; Jupiter; vatten; plymer; solsystemet; skugga; planeter; satelliter; väte; Lyman-alpha;

   Sammanfattning : Europa is one of the most interesting satellites in the solar system in the search ofextra-terrestrial life, as it harbours an interior water ocean under its icy surface. Watervapour in Europa’s atmosphere has been previously observed, suggesting water plumeeruptions from the surface. LÄS MER

5. 4. High resolution imaging observations of exoplanet host stars

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Kaltrina Kajtazi; [2020]
   Nyckelord :Speckle imaging; Speckle interferometry; High resolution imaging; Short integration time; Binaries; Exoplant hosts; Stellar properties; WIYN; Gemini; Orbital period; Physical separation; Angular separation; magnitude difference; Physics and Astronomy;

   Sammanfattning : This is a thesis project, analysing data from high-resolution imaging observations, specifically speckle imaging, as a follow up study of exoplanet host stars observed with K2, the second operational phase of the space telescope Kepler. The project was accomplished at NASA Ames research center under the guidance of Rachel A. LÄS MER

7. 5. Investigating Gas Turbulence in Galactic Discs

   Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

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

   Sammanfattning : 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). LÄS MER