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arXiv · 2305.18249

Evolution of QPOs in GX 339-4 and EXO 1846-031 with Insight-HXMT and NICER

Zuobin Zhang·Honghui Liu·Divya Rawat·Cosimo Bambi·Ranjeev Misra·Pengju Wang·Long Ji·Shu Zhang·Shuangnan Zhang
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Abstract

We conduct a spectral and timing analysis of GX 339-4 and EXO 1846-031 with the aim of studying the evolution of Type-C QPOs with spectral parameters. The high cadence data from Insight-HXMT and NICER allow us to track them. Type-C QPOs appear at the end of low-hard state and/or hard-intermediate state. The results reveal that the QPO frequency is closely related to the inner disk radius and mass accretion rate in the two sources. Such a correlation is nicely consistent with the dynamic frequency model.

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Zuobin Zhang, Honghui Liu, Divya Rawat, Cosimo Bambi, Ranjeev Misra, Pengju Wang, Long Ji, Shu Zhang, Shuangnan Zhang. 2023-05-29. Evolution of QPOs in GX 339-4 and EXO 1846-031 with Insight-HXMT and NICER. https://doi.org/10.3847/1538-4357%2Fad5a00

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