Wavelet analysis of the transient QPOs in MAXI J1535−571 with Insight-HXMT
| العنوان: | Wavelet analysis of the transient QPOs in MAXI J1535−571 with Insight-HXMT |
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| المؤلفون: | X Chen, W Wang, P F Tian, P Zhang, Q Liu, H J Wu, N Sai, Y Huang, L M Song, J L Qu, L Tao, S Zhang, F J Lu, S N Zhang |
| المصدر: | Monthly Notices of the Royal Astronomical Society. 517:182-191 |
| بيانات النشر: | Oxford University Press (OUP), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Solar and Stellar Astrophysics (astro-ph.SR) |
| الوصف: | Using wavelet analysis and power density spectrum, we investigate two transient quasi-periodic oscillations (QPOs) observed in MAXI J1535$-$571 observed with Insight-HXMT. The transient QPOs have a centroid frequency of $\sim 10$ Hz with a FWHM $\sim 0.6$ Hz and an rms amplitude $\sim 14\%$. Energy spectra of QPO and non-QPO regimes are also separated and analyzed, and the spectra become softer with higher $E_{cut}$ in the non-QPO regime compared to the QPO regime. Our results suggest that the transient QPOs detected in MJD 58016 and 58017 are still the type-C QPO, and the source remains in its HIMS. The duration of all type-C QPO signals based on wavelet is positively correlated with the mean count rate above $\sim 10$ keV, implying appearance of QPOs in different time scales should be coupled with the corona. The transient QPO properties could be related to the jet or flares, perhaps the partial ejection of the corona is responsible for the disappearance of the type-C QPO. Comment: 10 pages, MNRAS in press |
| تدمد: | 1365-2966 0035-8711 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9778475741592d5f1b5f957bf49410bf https://doi.org/10.1093/mnras/stac2710 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....9778475741592d5f1b5f957bf49410bf |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13652966 00358711 |
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