| dc.contributor |
Witek, Helvi |
|
| dc.creator |
Creci, Gastón |
|
| dc.date |
2017-10-25T17:15:35Z |
|
| dc.date |
2017-10-25T17:15:35Z |
|
| dc.date |
2017-06 |
|
| dc.date.accessioned |
2024-12-16T10:25:45Z |
|
| dc.date.available |
2024-12-16T10:25:45Z |
|
| dc.identifier |
http://hdl.handle.net/2445/117111 |
|
| dc.identifier.uri |
http://fima-docencia.ub.edu:8080/xmlui/handle/123456789/19963 |
|
| dc.description |
Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2017, Tutor: Helvi Witek |
|
| dc.description |
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rate or the flux at the event horizon, comparing them with the numerical solution where our approximations are no longer valid. |
|
| dc.format |
5 p. |
|
| dc.format |
application/pdf |
|
| dc.language |
eng |
|
| dc.rights |
cc-by-nc-nd (c) Creci, 2017 |
|
| dc.rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
|
| dc.rights |
info:eu-repo/semantics/openAccess |
|
| dc.source |
Treballs Finals de Grau (TFG) - Física |
|
| dc.subject |
Forats negres (Astronomia) |
|
| dc.subject |
Treballs de fi de grau |
|
| dc.subject |
Black holes (Astronomy) |
|
| dc.subject |
Bachelor's theses |
|
| dc.title |
Black holes and axions |
|
| dc.type |
info:eu-repo/semantics/bachelorThesis |
|