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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2410.06574 |
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| _version_ | 1866916711593148416 |
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| author | Liao, Jie Chang, Ning Cui, Lang Jiang, Pengfei Mou, Didong Huang, Yongfeng An, Tao Ho, Luis C. Feng, Hua Fu, Yu-Cong Cao, Hongmin Tripathi, Ashutosh Liu, Xiang |
| author_facet | Liao, Jie Chang, Ning Cui, Lang Jiang, Pengfei Mou, Didong Huang, Yongfeng An, Tao Ho, Luis C. Feng, Hua Fu, Yu-Cong Cao, Hongmin Tripathi, Ashutosh Liu, Xiang |
| contents | Type-C quasi-periodic oscillations (QPOs) in black hole X-ray transients typically manifest in the low-hard and hard-intermediate states. This study presents a detailed spectral and temporal analysis of the black hole candidate Swift J1727.8-1613 using NICER observations from August and September 2023, with a focus on the first flare period. We detected Type-C QPOs whose centroid frequency increased from 0.33 Hz to 2.63 Hz. An additional increase in frequency was observed when the outburst entered a flare period. The time-averaged spectra, along with the rms and phase-lag spectra of the QPOs, were jointly fitted using the time-dependent Comptonization model vkompthdk to examine the geometry of the corona during this flare. Correlations between spectral and temporal properties suggest that the detected type-C QPOs are primarily modulated by Lense-Thirring precession. Leveraging simultaneous radio observations that indicate discrete jet ejections, we proposed a scenario to describe the co-evolution of the disk-corona-jet during a flare (~3 days). This scenario is partially supported for the first time by polarization data in the soft gamma-ray band from INTEGRAL/IBIS. A phenomenological analysis of the corona scenario was also conducted. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_06574 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Tracking the jet-like corona of black hole Swift J1727.8-1613 during a flare state through Type-C quasi-periodic oscillations Liao, Jie Chang, Ning Cui, Lang Jiang, Pengfei Mou, Didong Huang, Yongfeng An, Tao Ho, Luis C. Feng, Hua Fu, Yu-Cong Cao, Hongmin Tripathi, Ashutosh Liu, Xiang High Energy Astrophysical Phenomena Type-C quasi-periodic oscillations (QPOs) in black hole X-ray transients typically manifest in the low-hard and hard-intermediate states. This study presents a detailed spectral and temporal analysis of the black hole candidate Swift J1727.8-1613 using NICER observations from August and September 2023, with a focus on the first flare period. We detected Type-C QPOs whose centroid frequency increased from 0.33 Hz to 2.63 Hz. An additional increase in frequency was observed when the outburst entered a flare period. The time-averaged spectra, along with the rms and phase-lag spectra of the QPOs, were jointly fitted using the time-dependent Comptonization model vkompthdk to examine the geometry of the corona during this flare. Correlations between spectral and temporal properties suggest that the detected type-C QPOs are primarily modulated by Lense-Thirring precession. Leveraging simultaneous radio observations that indicate discrete jet ejections, we proposed a scenario to describe the co-evolution of the disk-corona-jet during a flare (~3 days). This scenario is partially supported for the first time by polarization data in the soft gamma-ray band from INTEGRAL/IBIS. A phenomenological analysis of the corona scenario was also conducted. |
| title | Tracking the jet-like corona of black hole Swift J1727.8-1613 during a flare state through Type-C quasi-periodic oscillations |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2410.06574 |