Search for dissertations about: "interstellar spectrum"
Showing result 1 - 5 of 10 swedish dissertations containing the words interstellar spectrum.
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1. Interstellar absorption across the electromagnetic spectrum
Abstract : We report results of a multi-wavelength study of interstellar absorption in diffuse molecular clouds that lie in the direction of flat-spectrum quasars. Quasars as back-ground sources allow the measurement of Galactic interstellar absorption across the electromagnetic spectrum from mm to X-ray wavelengths. READ MORE
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2. Atmospheric and Interstellar Cosmic Rays Measured With the CAPRICE98 Experiment
Abstract : .... READ MORE
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3. Dynamics of the interstellar matter in galaxies : isolated barred spiral galaxies : cloud formation processes
Abstract : The dynamical components of six isolated barred spiral (SB) galaxies are investigated. No evidence is found supporting the hypothesis of a low amount of dark matter being characteristic of SB galaxies. The presence of companion galaxies is found to correlate with an increased statistical spread in the neutral hydrogen (HI) extent. READ MORE
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4. Isomers of ions in space and planetary atmospheres
Abstract : Ion chemistry has become increasingly important in the evolution of the chemical inventory of extraterrestrial environments. Isomers of ions have also come to play an important role as, in many instances, the cold environments in the interstellar medium and high layers of planet and satellite atmospheres do not supply enough energy to overcome isomerization barriers and the isomers effectively act as separate molecules. READ MORE
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5. Astrochemical Surface Science: Water Desorption from Nanostructured Graphite
Abstract : To date, around 180 different molecules have been identified in the interstellar medium (ISM). Some of them form molecular ices on cold interstellar dust grain surfaces. An interstellar dust grain particle is in the order of nanometres in size and is usually composed of a carbonaceous or silicatious grain core. READ MORE