Full metadata record
DC Field | Value | Language |
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dc.citation.number | 8 | - |
dc.citation.startPage | 083001 | - |
dc.citation.title | PHYSICAL REVIEW D | - |
dc.citation.volume | 104 | - |
dc.contributor.author | Gamboa, Aldo | - |
dc.contributor.author | Gabarrete, Carlos | - |
dc.contributor.author | Dominguez-Fernandez, Paola | - |
dc.contributor.author | Nunez, Dario | - |
dc.contributor.author | Sarbach, Olivier | - |
dc.date.accessioned | 2023-12-21T15:10:33Z | - |
dc.date.available | 2023-12-21T15:10:33Z | - |
dc.date.created | 2021-11-15 | - |
dc.date.issued | 2021-10 | - |
dc.description.abstract | The accretion of a spherically symmetric, collisionless kinetic gas cloud onto a Schwarzschild black hole is analyzed. Whereas previous studies have treated this problem by specifying boundary conditions at infinity, here the properties of the gas are given at a sphere of finite radius. The corresponding steady-state solutions are computed using four different models with an increasing level of sophistication, starting with the purely radial infall of Newtonian particles and culminating with a fully general relativistic calculation in which individual particles have angular momentum. The resulting mass accretion rates are analyzed and compared with previous models, including the standard Bondi model for a hydrodynamic flow. We apply our models to the supermassive black holes Sgr A* and M87*, and we discuss how their low luminosity could be partially explained by a kinetic description involving angular momentum. Furthermore, we get results consistent with previous model-dependent bounds for the accretion rate imposed by rotation measures of the polarized light coming from Sgr A* and with estimations of the accretion rate of M87* from the Event Horizon Telescope collaboration. Our methods and results could serve as a first approximation for more realistic black hole accretion models in various astrophysical scenarios in which the accreted material is expected to be nearly collisionless. | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW D, v.104, no.8, pp.083001 | - |
dc.identifier.doi | 10.1103/PhysRevD.104.083001 | - |
dc.identifier.issn | 2470-0010 | - |
dc.identifier.scopusid | 2-s2.0-85116358550 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/54815 | - |
dc.identifier.url | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.083001 | - |
dc.identifier.wosid | 000704632300003 | - |
dc.language | 영어 | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Accretion of a Vlasov gas onto a black hole from a sphere of finite radius and the role of angular momentum | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Astronomy & Astrophysics; Physics, Particles & Fields | - |
dc.relation.journalResearchArea | Astronomy & Astrophysics; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | SAGITTARIUS-A-ASTERISK | - |
dc.subject.keywordPlus | ADVECTION-DOMINATED ACCRETION | - |
dc.subject.keywordPlus | CENTRAL PARSEC | - |
dc.subject.keywordPlus | LINEAR-POLARIZATION | - |
dc.subject.keywordPlus | VARIABLE ACCRETION | - |
dc.subject.keywordPlus | STELLAR WINDS | - |
dc.subject.keywordPlus | MATTER | - |
dc.subject.keywordPlus | GALAXY | - |
dc.subject.keywordPlus | SIMULATIONS | - |
dc.subject.keywordPlus | FLOWS | - |
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