Black holes and axions

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rate or the flux at the event horizon, comparing them with the numerical solution where our approximations are no longer valid.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

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