Perturbed accretion disk around the massive black hole

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dc.contributor.authorDoenmez, O.
dc.contributor.editorCetin, SA
dc.contributor.editorHikmet, I
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2007
dc.departmentNiğde ÖHÜ
dc.description6th International Conference of the Balkan-Physical-Union -- AUG 22-26, 2006 -- Istanbul, TURKEY
dc.description.abstractIn this paper, perturbations of an accretion disk by a star orbiting around a massive black hole are studied. We report on a numerical experiment, which has been carried out by using a parallel-machine code originally developed by Ref.[1]. An initially steady state accretion disk near a non-rotating (Schwarzschild) black hole interacts with a "star", modeled as an initially circular region of increased density. Part of the disk is affected by the interaction. We follow the evolution for order of one dynamical period and we show how the non-axisymetric density perturbation further evolves and moves downward where the material of the disk and the star become eventually accreted onto the central body. When the accretion disk, in steady state or not, is perturbed by star, disk around the black hole is destroyed by the star-disk interaction. Destroyed accretion disks at different locations create spiral shock waves and they causes losing its angular momentum. Finally, because of losing angular momentum, gas starts falling into the black hole. At the same time, X-ray is emitted by accretion disk during the unstable cases. The massive black hole may be created as a consequence of interaction.
dc.description.sponsorshipBalkan Phys Union, Turkish Phys Soc, Istanbul Univ, Yildiz Tech Univ, Bogaz Univ, Dogus Univ, European Phys Soc, Govt Istanbul, Istanbul Metropolitan Municipal, Turkish Atomic Energy Author, Sci & Technol Res Council Turkey, United Natl Educ Sci & Cultutal Org, NEL Electronik
dc.identifier.endpage144
dc.identifier.isbn978-0-7354-0404-5
dc.identifier.issn0094-243X
dc.identifier.scopus2-s2.0-34547488468
dc.identifier.scopusqualityN/A
dc.identifier.startpage143
dc.identifier.urihttps://hdl.handle.net/11480/5452
dc.identifier.volume899
dc.identifier.wosWOS:000246647900050
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorDoenmez, O.
dc.language.isoen
dc.publisherAMER INST PHYSICS
dc.relation.ispartofSIX INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION
dc.relation.ispartofseriesAIP Conference Proceedings
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectrelativistic hydrodynamics
dc.subjectaccretion disk
dc.subjectstar-disk interaction
dc.subjectAGN
dc.subjectshock wave
dc.titlePerturbed accretion disk around the massive black hole
dc.typeConference Object

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