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GR: Fachverband Gravitation und Relativitätstheorie

GR 1: Black Holes I

GR 1.1: Vortrag

Montag, 11. März 2024, 16:45–17:05, HBR 14: HS 2

Examine of Quasi-Periodic Oscillations of X-ray Flux Seen in Stellar-Mass Black Holes — •Gizem Dilara Açan Yildiz^1,2 and Ertan Güdekli¹ — ¹Istanbul University, Turkey — ²Piri Reis University, Turkey

Stellar-mass Black Hole (BH) binaries have long been known to exhibit quasi-periodic oscillations (QPO) in their X-ray flux curves, and this phenomenon is considered one of the most effective tests of strong gravity models. In this study, we take into account the observation data of three well-known microquasars such as GRO 1655-40, XTE 1550- 564 and GRS 1915+ 105 and investigated QPOs. We successfully fit the observational data of epicyclic resonance and variants of high-frequency QPO models, investigated relativistic precession and its variants, tidal decay and warped disk models with perfect dark energy under the influence of the relevant parameter in the Kerr BH. We show that traditional geodetic models of QPOs can explain observationally generated data from microquasar models.

Keywords: Black hole pyhsics; Quasi-periodic oscilations; Dark energy