NICER uncovers the transient nature of the type-B quasi-periodic oscillation in the black hole candidate MAXI J1348-630

Abstract

We present a systematic spectral-timing analysis of a fast appearance/disappearance of a type-B quasi-periodic oscillation (QPO), observed in four NICER observations of MAXI J1348-630. By comparing the spectra of the period with and without the type-B QPO, we found that the main difference appears at energy bands above ~2 keV, suggesting that the QPO emission is dominated by the hard Comptonised component. During the transition, a change in the relative contribution of the disk and Comptonised emission was observed. The disk flux decreased while the Comptonised flux increased from non-QPO to type-B QPO. However, the total flux did not change too much in the NICER band. Our results reveal that the type-B QPO is associated with a redistribution of accretion power between the disk and Comptonised emission. When the type-B QPO appears, more accretion power is dissipated into the Comptonised region than in the disk. Our spectral fits give a hint that the increased Comptonised emission may come from an additional component that is related to the base of the jet.

23 pages, 12 figures, accepted for publication in MNRAS

References in corpus (22)

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Cited by in corpus (16)

• vKompth: A variable Comptonisation model for low-frequency quasi-periodic oscillations in black-hole X-ray binaries
• Modeling the kinematics of the decelerating jets from the black hole X-ray binary MAXI J1348$-$630
• Dual-Corona Comptonization model for the Type-B Quasi-Periodic Oscillations in GX 339-4
• Transitions and Origin of the Type-B Quasi-Periodic Oscillation in the Black Hole X-ray Binary MAXI~ J1348--630
• Discovery of optical and infrared accretion disc wind signatures in the black hole candidate MAXI J1348-630
• A NICER look at the jet-like corona of MAXI J1535-571 through type-B quasi-periodic oscillations
• Wavelet analysis of MAXI J1535-571 with Insight-HXMT
• Fast transitions of X-ray variability in the black hole transient GX 339--4: comparison with MAXI J1820+070 and MAXI J1348-630
• Wavelet analysis of the transient QPOs in MAXI J1535$-$571 with Insight-HXMT
• No Need for an Extreme Jet Energy in the Black-Hole X-Ray Binary MAXI J1348--630
• An Insight-HXMT view of the mHz quasi-regular modulation phenomenon in the black hole X-ray binary 4U 1630-47
• Broadband Spectral properties of MAXI J1348--630 using AstroSat Observations
• Spectro-temporal Investigation of Quasi-periodic Oscillations From Black Hole X-ray Binary 4U 1630-472 Using $\text{NICER}$
• Black-hole X-ray binary Swift J1727.8$-$1613 shows simultaneous Type-B and Type-C quasi-periodic oscillations across the hard-intermediate and soft-intermediate states
• Multi-band power color-color diagrams of three black hole X-ray binaries observed with Insight-HXMT
• The full evolution of the type-C QPO in MAXI J1348-630 revealed by Insight-HXMT