Essays about: "h-alpha"
Found 5 essays containing the word h-alpha.
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1. Mapping asymmetries of the H-alpha line profile in solar flares
University essay from Stockholms universitet/Institutionen för astronomiAbstract : In this paper we analyze the small C1.5 class solar flare observed on June 30th 2013 by the Swedish Solar Telescope. READ MORE
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2. Investigating Gas Turbulence in Galactic Discs
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : 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
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3. Mapping asymmetries of the H-alpha line profile in solar flares
University essay from Stockholms universitet/Institutionen för astronomiAbstract : In this paper we analyze the small C1.5 class solar flare observed on June 30th 2013 by the Swedish Solar Telescope. READ MORE
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4. Plasma diagnostics for particle confinement studies in magnetic fusion devices
University essay from Uppsala universitet/Tillämpad kärnfysikAbstract : This thesis investigates the performance and improves a double color interferometer setup, absolutely calibrates a line radiation Balmer H-alpha measurement setup, and uses measurements from both setups to estimate the particle confinement time of a plasma. The double colour interferometer at the magnetic confinement plasma device EXTRAP T2R measures the line integrated electron density of the plasma. READ MORE
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5. Photo-evaporation of Globulettes : Numerical hydrodynamic studies of photo-evaporating low-mass globules in the Rosette Nebula
University essay from Institutionen för astronomiAbstract : In this work, the long-term evolution of globulettes, low-mass globules found in H II regions, is studied through numerical hydrodynamic simulations. It has been proposed by Gahm et al. READ MORE