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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2602.01373 |
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| _version_ | 1866918318187741184 |
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| author | Li, Wen-Zhong Zhang, Shu Shui, Qing-Cang Chen, Yu-Peng Zhang, Shuang-Nan Feng, Hua Ge, Ming-Yu Tao, Lian Peng, Jing-Qiang Chen, Bo-Yan Kong, Ling-Da Wang, Peng-Ju |
| author_facet | Li, Wen-Zhong Zhang, Shu Shui, Qing-Cang Chen, Yu-Peng Zhang, Shuang-Nan Feng, Hua Ge, Ming-Yu Tao, Lian Peng, Jing-Qiang Chen, Bo-Yan Kong, Ling-Da Wang, Peng-Ju |
| contents | We conduct an in-depth study of the quasi-periodic oscillation (QPO) properties of RE J1034+396, by constructing QPO phase-folded light curves from 10 XMM-Newton observations during 2020-2021. Our analysis reveals that the QPO in the source exhibits two mutually convertible lag-energy modes: "hard lag" and "soft lag". Despite different lag characteristics, the energy dependency of the root mean square (RMS) amplitude of the QPO under both modes are consistent, suggesting the two types of QPO originate from the same physical mechanism. By performing a spectral analysis, we further find a correlation between time-lag modes and spectral states: the soft lag mode typically corresponds to harder X-ray spectra and higher blackbody temperatures. Through comprehensive comparison of multiple theoretical models, we propose that the relativistic precession model (RPM) of the corona provides a plausible qualitative explanation for the observed complex phenomena, including time-lag mode transitions, and variations of spectral hardness and QPO signal strength. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_01373 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Investigation on Quasi-periodic Oscillation Phase Lag of RE J1034+396 Li, Wen-Zhong Zhang, Shu Shui, Qing-Cang Chen, Yu-Peng Zhang, Shuang-Nan Feng, Hua Ge, Ming-Yu Tao, Lian Peng, Jing-Qiang Chen, Bo-Yan Kong, Ling-Da Wang, Peng-Ju High Energy Astrophysical Phenomena We conduct an in-depth study of the quasi-periodic oscillation (QPO) properties of RE J1034+396, by constructing QPO phase-folded light curves from 10 XMM-Newton observations during 2020-2021. Our analysis reveals that the QPO in the source exhibits two mutually convertible lag-energy modes: "hard lag" and "soft lag". Despite different lag characteristics, the energy dependency of the root mean square (RMS) amplitude of the QPO under both modes are consistent, suggesting the two types of QPO originate from the same physical mechanism. By performing a spectral analysis, we further find a correlation between time-lag modes and spectral states: the soft lag mode typically corresponds to harder X-ray spectra and higher blackbody temperatures. Through comprehensive comparison of multiple theoretical models, we propose that the relativistic precession model (RPM) of the corona provides a plausible qualitative explanation for the observed complex phenomena, including time-lag mode transitions, and variations of spectral hardness and QPO signal strength. |
| title | Investigation on Quasi-periodic Oscillation Phase Lag of RE J1034+396 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2602.01373 |