Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/117111| Title: | Black holes and axions |
| Author: | Creci, Gastón |
| Director/Tutor: | Witek, Helvi |
| Keywords: | Forats negres (Astronomia) Treballs de fi de grau Black holes (Astronomy) Bachelor's theses |
| Issue Date: | Jun-2017 |
| Abstract: | We solve the Klein-Gordon equation for an axion field in a Kerr background analytically for M [mu] << 1 and M [omega] << 1 for small spins via matching the near and far region solutions. This yields a hydrogen-like frequency spectrum and, if the superradiance condition is met, an instability. Moreover, we discuss some physically relevant elements of our system such as the potential associated to a black hole, the superradiance rate or the flux at the event horizon, comparing them with the numerical solution where our approximations are no longer valid. |
| Note: | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2017, Tutor: Helvi Witek |
| URI: | http://hdl.handle.net/2445/117111 |
| Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Creci Keinbaum Gastón-Federico.pdf | 403.93 kB | Adobe PDF | View/Open |
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