Sökning: "Hypervelocity stars"
Hittade 3 uppsatser innehållade orden Hypervelocity stars.
1. Hyper-velocity stars from globular clusters hosting intermediate-mass black holes
Kandidat-uppsats, Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionenSammanfattning : 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. LÄS MER
2. Making Hypervelocity Stars
Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisationSammanfattning : 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. LÄS MER
3. On the Origin of Hypervelocity Stars
Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisationSammanfattning : Hypervelocity stars (HVSs) are stars located in the Galactic halo travelling with extremely high speeds. They are produced when a binary approches the supermassive black hole (SMBH) in the Galactic Center (GC) and gets tidally broken up. In this process one of the stars is ejected with high velocity. LÄS MER