The bicoherence study of quasi-periodic oscillations in MAXI J1535-571
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| Format: | Preprint |
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2024
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| _version_ | 1866929282976055296 |
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| author | Zhu, Ziyuan Chen, Xiao Wang, Wei |
| author_facet | Zhu, Ziyuan Chen, Xiao Wang, Wei |
| contents | Bicoherence is a way to measure the phase coupling of triplets of Fourier frequencies. We use this method to analyze quasi-periodic oscillations (QPOs) in the black hole X-ray binary MAXI J1535$-$571 during its 2017 September-October outburst. The bicoherence provides an interesting new diagnostic to uncover QPO behaviour and the relationships between QPO harmonics and broadband noise. The bicoherence pattern of type-C QPOs starts as a 'web' pattern and changes to a 'hypotenuse' pattern after the presence of type-B QPOs, indicating that MAXI J1535$-$571 is a low-inclination source. The intensity of bicoherence also exhibits variations across different energy bands. We try to explain the bicoherence results in the scenario of a dual-corona geometry. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2403_13606 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The bicoherence study of quasi-periodic oscillations in MAXI J1535-571 Zhu, Ziyuan Chen, Xiao Wang, Wei High Energy Astrophysical Phenomena Solar and Stellar Astrophysics Bicoherence is a way to measure the phase coupling of triplets of Fourier frequencies. We use this method to analyze quasi-periodic oscillations (QPOs) in the black hole X-ray binary MAXI J1535$-$571 during its 2017 September-October outburst. The bicoherence provides an interesting new diagnostic to uncover QPO behaviour and the relationships between QPO harmonics and broadband noise. The bicoherence pattern of type-C QPOs starts as a 'web' pattern and changes to a 'hypotenuse' pattern after the presence of type-B QPOs, indicating that MAXI J1535$-$571 is a low-inclination source. The intensity of bicoherence also exhibits variations across different energy bands. We try to explain the bicoherence results in the scenario of a dual-corona geometry. |
| title | The bicoherence study of quasi-periodic oscillations in MAXI J1535-571 |
| topic | High Energy Astrophysical Phenomena Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2403.13606 |