Energy Dependence of the Low-frequency Quasiperiodic Oscillations in Swift J1727.8-1613

被引：13

作者：

Zhu, Haifan ^{[1
]}

Wang, Wei ^{[1
]}

机构：

[1] Wuhan Univ, Sch Phys & Technol, Dept Astron, Wuhan 430072, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2024年 / 968卷 / 02期

关键词：

ACCRETION-EJECTION INSTABILITY; X-RAY BINARIES; INSIGHT-HXMT; TIMING ANALYSIS; GX; 339-4; CENTROID FREQUENCY; MAXI J1535-571; VARIABILITY; EVOLUTION; DISKS;

D O I：

10.3847/1538-4357/ad4ce4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on observations from the Insight Hard X-ray Modulation Telescope (Insight-HXMT), an analysis of type C quasiperiodic oscillations (QPOs) observed during the outburst of the new black hole candidate Swift J1727.8-1613 in 2023 was conducted. This analysis scrutinized the QPO's evolution throughout the outburst, particularly noting its rapid frequency escalation during two flare events. Utilizing the energy range covered by Insight-HXMT, a dependency of the QPO frequency on energy was observed. Below approximately 3 Hz, minimal variations in frequency with energy were noted, whereas clear variations with photon energy were observed when it exceeded approximately 3 Hz. Additionally, a sharp drop in the rate of change was observed when the frequency exceeded approximately 8 Hz. This behavior, similar to several previously reported sources, suggests the presence of a common underlying physical mechanism. Moreover, the QPO rms-frequency relationship can be explained by the Lense-Thirring precession model. The relationship between rms energy and phase lag with frequency suggests the black hole system as a high-inclination source.

引用

页数：10

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