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Epicyclic Oscillations and Circular Orbits in Hairy Black Holes: Testing by High-Frequency Quasi-Periodic Oscillations Observed in Microquasars

التفاصيل البيبلوغرافية
العنوان: Epicyclic Oscillations and Circular Orbits in Hairy Black Holes: Testing by High-Frequency Quasi-Periodic Oscillations Observed in Microquasars
المؤلفون: Jaroslav Vrba
المصدر: Universe, Vol 10, Iss 1, p 9 (2023)
بيانات النشر: MDPI AG, 2023.
سنة النشر: 2023
المجموعة: LCC:Elementary particle physics
مصطلحات موضوعية: hairy spacetime, high-frequency quasi-periodic oscillations, microquasars, Elementary particle physics, QC793-793.5
الوصف: Recently, Ovalle and his collaborators proposed an exact solution to Einstein’s equations. In this study, we investigate the main characteristics of the spherically symmetric spacetime determined by the hair parameter l, with a specific focus on circular orbits, particularly the innermost circular orbits (ISCOs), and the epicyclic oscillatory motion along these orbits. To assess the validity of this novel geometry, we employ the frequencies derived from the epicyclic resonance model of high-frequency quasi-periodic oscillations (HF QPOs) observed in microquasars, as well as the ISCOs. By analyzing the observed data from three selected microquasars, we establish constraints on the parameter l. Our findings suggest that this geometric framework can encompass the phenomena associated with HF QPOs and offer a partial explanation for the observed shift in the ISCOs, which is commonly attributed to the rotation of the black hole.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 10010009
2218-1997
Relation: https://www.mdpi.com/2218-1997/10/1/9; https://doaj.org/toc/2218-1997
DOI: 10.3390/universe10010009
URL الوصول: https://doaj.org/article/b13919eea83e429a9b5f37834749f5fc
رقم الأكسشن: edsdoj.b13919eea83e429a9b5f37834749f5fc
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:10010009
22181997
DOI:10.3390/universe10010009