The effects of different perturbations on the dynamics of the accretion disk around the black hole

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dc.contributor.authorDoenmez, Orhan
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2007
dc.departmentNiğde ÖHÜ
dc.description.abstractWe investigate the special cases of the formation of shocks in the accretion disks around the nonrotating (Schwarzschild) black holes in cases where one or few stars perturb the disk. We model the structure of disk with a 2D fully general relativistic hydrodynamic code and investigate a variety of cases in which the stars interacting with the disk are captured at various locations. We have found the following results: (1) if the stars perturb the disk at nonsymmetric locations, a moving one-armed spiral shock wave is produced and it destroys the disk eventually; (2) if the disk is perturbed by a single star located close to the black hole, a standing shock wave is produced while the disk becomes an accretion tori; (3) if the disk is perturbed by stars at symmetric locations, moving two-armed spiral shock waves are produced while the disk reaches a steady state; (4) continuous injection of matter into the stable disk produces a standing shock wave behind the black hole. Our outcomes reinforce the view that different perturbations on the stable accretion disk carry out different types of shock waves which produce Quasi-Periodic Oscillation (QPO) phenomena in galactic black hole candidates and it is observed as a X-ray.
dc.identifier.doi10.1142/S0217751X07036166
dc.identifier.endpage1898
dc.identifier.issn0217-751X
dc.identifier.issue10
dc.identifier.scopus2-s2.0-34248345510
dc.identifier.scopusqualityQ2
dc.identifier.startpage1875
dc.identifier.urihttps://dx.doi.org/10.1142/S0217751X07036166
dc.identifier.urihttps://hdl.handle.net/11480/5393
dc.identifier.volume22
dc.identifier.wosWOS:000251712200006
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorDoenmez, Orhan
dc.language.isoen
dc.publisherWORLD SCIENTIFIC PUBL CO PTE LTD
dc.relation.ispartofINTERNATIONAL JOURNAL OF MODERN PHYSICS A
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectnumerical relativistic hydrodynamics black hole
dc.subjectperturbed accretion disk
dc.subjectspiral shock
dc.subjectstanding shock
dc.titleThe effects of different perturbations on the dynamics of the accretion disk around the black hole
dc.typeArticle

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