Essays about: "hypervelocity"
Showing result 1 - 5 of 6 essays containing the word hypervelocity.
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1. Petrography of impactites from the Dellen impact structure, Sweden
University essay from Lunds universitet/Geologiska institutionenAbstract : Identification and characterization of shock-metamorphic features in hypervelocity impact craters is important for our understanding of how shock waves interact with geologic materials and how impact craters form, which in turn is essential to our understanding of what role impact cratering played in the development of our solar system. Of particular interest are accessory minerals like apatite, which contains various volatiles that can affect the atmosphere of a body, or magnetite whose magnetic properties constitute a remote sensing indicator which allows us to study and understand the internal structures of distant bodies. READ MORE
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2. Hyper-velocity stars from globular clusters hosting intermediate-mass black holes
University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionenAbstract : In 1988 Hills proposed that stars can gain velocities above 500 km s−1 if they are in a stellar binary which gets disrupted by a super massive black hole (SMBH). One of the stars would get trapped in an elliptical orbit around the SMBH while the other gets ejected and obtains a relatively high velocity. READ MORE
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3. Impactites from the Hiawatha crater, North-West Greenland
University essay from Stockholms universitet/Institutionen för geologiska vetenskaperAbstract : The recent discovery of the 31-km-wide Hiawatha impact crater has raised unanswered questions about its age, impactor and highly unusual organic carbon component. Previous research suggests a fractionated iron meteorite impactor, a probable maximum 3–2.4 Ma impact age and a possible Younger Dryas impact age. READ MORE
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4. Making Hypervelocity Stars
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : In this thesis, I investigate if the binaries that are being tidally disrupted by means of the Hills mechanism, producing hypervelocity stars, could have been transported to the galactic centre by two-body scattering. To survive a scattering event, the binary must be hard, meaning that the binding energy of the binary is higher than the kinetic energy of the collider. READ MORE
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5. Characterisation of Dust Particles Trapped in Silica Aerogels
University essay from KTH/FusionsplasmafysikAbstract : This thesis involves the study of dust particles trapped in silica aerogel for fusion dust diagnostics purpose. The low velocity impact experiments are done by implanting predefined dust particles into silica aerogel by using a springpiston air gun. READ MORE