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Insight-HXMT observations of the New Black Hole Candidate MAXI J1535-571: timing analysis

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arxiv 1808.05318 v1 pith:LRJWFAZM submitted 2018-08-16 astro-ph.HE

Y. Huang , J. L. Qu , S. N. Zhang , Q. C. Bu , Y. P. Chen , L. Tao , S. Zhang , F. J. Lu
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T. P. Li L. M. Song Y. P. Xu X. L. Cao Y. Chen C. Z. Liu H.-K. Chang W. f. Yu S. S. Weng X. Hou A.K.H. Kong F. G. Xie G. B. Zhang J. F. Zhou Z. Chang G. Chen L. Chen T. X. Chen Y. B. Chen W. Cui W. W. Cui J. K. Deng Y. W. Dong Y. Y. Du M. X. Fu G. H. Gao H. Gao M. Gao M. Y. Ge Y. D. Gu J. Guan C. Gungor C. C. Guo D. W. Han W. Hu J. Huo J. F. Ji S. M. Jia L. H. Jiang W. C. Jiang J. Jin Y. J. Jin B. Li C. K. Li G. Li M. S. Li W. Li X. Li X. B. Li X. F. Li Y. G. Li Z. J. Li Z. W. Li X. H. Liang J. Y. Liao G. Q. Liu H. W. Liu S. Z. Liu X. J. Liu Y. Liu Y. N. Liu B. Lu X. F. Lu T. Luo X. Ma B. Meng Y. Nang J. Y. Nie G Ou N. Sai R. C. Shang L. Sun Y. Tan W. Tao Y. L. Tuo G. F. Wang H. Y. Wang J. Wang W. S. Wang Y. S. Wang X. Y. Wen B. B. Wu M. Wu G. C. Xiao S. L. Xiong H. Xu L. L. Yan J. W. Yang S.Yang Y. J. Yang A. M. Zhang C. L. Zhang C. M. Zhang F. Zhang H. M. Zhang J. Zhang Q. Zhang T. Zhang W. Zhang W. C. Zhang W. Z. Zhang Y. Zhang Y. F. Zhang Y. J. Zhang Z. Zhang Z. L. Zhang H. S. Zhao J. L. Zhao X. F. Zhao S. J. Zheng Y. Zhu Y. X. Zhu C. L. Zou (The Insight-HXMT Collaboration)
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classification astro-ph.HE
keywords qposstatecentroidfrequencyhardintermediateblackcandidate
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We present the X-ray timing results of the new black hole candidate (BHC) MAXI J1535-571 during its 2017 outburst from Hard X-ray Modulation Telescope (\emph{Insight}-HXMT) observations taken from 2017 September 6 to 23. Following the definitions given by \citet{Belloni2010}, we find that the source exhibits state transitions from Low/Hard state (LHS) to Hard Intermediate state (HIMS) and eventually to Soft Intermediate state (SIMS). Quasi-periodic oscillations (QPOs) are found in the intermediate states, which suggest different types of QPOs. With the large effective area of \emph{Insight}-HXMT at high energies, we are able to present the energy dependence of the QPO amplitude and centroid frequency up to 100 keV which is rarely explored by previous satellites. We also find that the phase lag at the type-C QPOs centroid frequency is negative (soft lags) and strongly correlated with the centroid frequency. By assuming a geometrical origin of type-C QPOs, the source is consistent with being a high inclination system.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Discovery of a quasi-periodic oscillation non-harmonically related to the Type-C QPO in the hard intermedidate state of MAXI J1820+070

    astro-ph.HE 2026-06 unverdicted novelty 7.0 of 10

    Detection of a non-harmonic QPO precursor to Type-B in the HIMS of MAXI J1820+070 using NICER timing data.

  2. Spectro-temporal Investigation of Quasi-periodic Oscillations From Black Hole X-ray Binary 4U 1630-472 Using $\textit{NICER}$

    astro-ph.HE 2025-01 conditional novelty 5.0 of 10

    Type-C QPOs in the 2021 outburst of 4U 1630-472 show a strong photon index versus frequency correlation and a significant Q-factor break at about 2.31 Hz.

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