A detailed view of low-frequency quasi-periodic oscillation in the broadband 0.2-200 keV with Insight-HXMT and NICER

Abstract

We report the X-ray timing results of the black hole candidate MAXI J1820+070 during its 2018 outburst using the Hard X-ray Modulation Telescope (Insight-HXMT) and Neutron Star Interior Composition Explorer Mission (NICER) observations. Low frequency quasi-periodic oscillations (LFQPOs) are detected in the low/hard state and the hard intermediate state, which lasted for about 90 days. Thanks to the large effective area of Insight-HXMT at high energies and NICER at low energies, we are able to present the energy dependence of the LFQPO characteristics and phase lags from 0.2 keV to 200 keV, which has never been explored by previous missions. We find that the centroid frequency of the LFQPOs do not change significantly with energy, while the full width at half maximum (FWHM) and fractional rms show a complex evolution with energy. The LFQPO phase lags at high energies and low energies show consistent energy-dependence relations taking the ~2 keV as reference. Our results suggest that the LFQPOs from high energy come from the LT precession of the relativistic jet, while the low-energy radiation is mainly from the perpendicular innermost regions of the accretion disk.

References in corpus (28)

• The corona contracts in a black-hole transient
• A quasi-periodic modulation of the iron line centroid energy in the black hole binary H 1743-322
• Geometrical constraints on the origin of timing signals from black holes
• Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT
• A radio parallax to the black hole X-ray binary MAXI J1820+070
• Inclination dependence of QPO phase lags in black hole X-ray binaries
• The binary mass ratio in the black hole transient MAXI J1820+070
• The Comptonising medium of the neutron star in 4U 1636-53 through its lower kilohertz Quasi-Periodic Oscillations
• Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-Timing Analysis
• AstroSat/LAXPC reveals the high energy variability of GRS 1915+105 in the chi class
• vKompth: A variable Comptonisation model for low-frequency quasi-periodic oscillations in black-hole X-ray binaries
• Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070
• A rapid change in X-ray variability and a jet ejection in the black hole transient MAXI J1820+070
• A two-component Comptonisation model for the type-B QPO in MAXI J1348-630
• Time lags of the type-B QPO in MAXI J1348-630
• A variable corona for GRS 1915+105
• Estimating the black hole spin for the X-ray binary MAXI J1820+070
• The evolution of the corona in MAXI J1535-571 through type-C quasi-periodic oscillations with Insight-HXMT
• The Evolution of the Phase Lags Associated with the Type-C Quasi-periodic Oscillation in GX 339--4 during the 2006/2007 Outburst
• A timing study of MAXI J1820+070 based on Swift/XRT and NICER monitoring in 2018/19
• Physical origin of the nonphysical spin evolution of MAXI J1820+070
• The evolution of the broadband temporal features observed in the black-hole transient MAXI J1820+070 with Insight-HXMT
• Variability and phase lags of the type-C quasi-periodic oscillation of MAXI J1348-630 with NICER
• On the energy dependence of the QPO phenomenon in the black hole system MAXI J1535-571
• The accretion flow geometry of MAXI J1820+070 through broadband noise research with Insight-HXMT
• Timing analysis of the black hole candidate EXO 1846-031 with Insight-HXMT monitoring
• Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070
• Determination of QPO properties in the presence of strong broad-band noise: a case study on the data of MAXI J1820+070

Cited by in corpus (6)

• Chasing the break: Tracing the full evolution of a black hole X-ray binary jet with multi-wavelength spectral modeling
• A Phase-resolved View of the Low-frequency Quasiperiodic Oscillations from the Black Hole Binary MAXI J1820+070
• Reflection Spectra of Accretion Disks Illuminated by an Off-Axis Corona
• Search for the Highest-energy Quasiperiodic Oscillation in the Black Hole X-Ray Binary Candidate Swift J1727.8-1613
• The full evolution of the type-C QPO in MAXI J1348-630 revealed by Insight-HXMT
• An Insight-HXMT View of the Evolution of the Type-C Quasiperiodic Oscillation during the Flaring State of Swift J1727.8-1613