Swift Observations of the bright uncatalogued X-ray transient MAXI J1535-571

Abstract

The black hole candidate MAXI J1535-571 is a recently discovered X-ray transient. We report on the monitoring observations of Swift Gamma-Ray Burst Mission during outburst. The source transits from the hard state to the intermediate state, and reaches the soft state; near the end of the outburst, it returns to the hard state passing through the low intermediate state, following a typical Q-shaped loop in the hardness-intensity diagram. During the high intermediate state, detailed spectral analyses using a multi-temperature disk model reveal that the disk luminosity is flatter than the inner disk temperature to the fourth power, and the disk temperature profile varies as the disk radius raised to the power of -0.5, consistent with the behavior of a slim disk, implying that the disk structure has been modified due to the high luminosity of ~ 10^{39} erg/s. Meanwhile, the column density increases with the Eddington ratio, suggesting that the outflow matters are driven by radiation pressure due to the high accretion rate.

arXiv comment13 pages, 9 figures, 2 tables. Accepted for publication in MNRAS

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Cited by in corpus (26)

• Disk-jet coupling in the 2017/2018 outburst of the Galactic black hole candidate X-ray binary MAXI J1535-571
• Insight-HXMT observations of the New Black Hole Candidate MAXI J1535-571: timing analysis
• AstroSat view of MAXI J1535-571: broadband spectro-temporal features
• Evolution of X-Ray Properties of MAXI J1535-571: Analysis with the TCAF Solution
• The NICER "Reverberation Machine": A Systematic Study of Time Lags in Black Hole X-Ray Binaries
• Rapid compact jet quenching in the Galactic black hole candidate X-ray binary MAXI J1535-571
• The evolution of the corona in MAXI J1535-571 through type-C quasi-periodic oscillations with Insight-HXMT
• Broadband reflection spectroscopy of MAXI J1535-571 using AstroSat: Estimation of black hole mass and spin
• An HI absorption distance to the black hole candidate X-ray binary MAXI J1535-571
• A NICER look at the state transitions of the black hole candidate MAXI J1535-571 during its reflares
• The comptonizing medium of the black-hole X-ray binary MAXI~J1535$-$571 through type-C quasi-periodic oscillations
• A wildly flickering jet in the black hole X-ray binary MAXI J1535-571
• Rapidly evolving disk-jet coupling during re-brightenings in the black hole transient MAXI J1535-571
• A NICER look at the jet-like corona of MAXI J1535-571 through type-B quasi-periodic oscillations
• Insight-HXMT Study of the Inner Accretion Disk in the Black Hole Candidate EXO 1846--031
• Wavelet analysis of MAXI J1535-571 with Insight-HXMT
• Peculiar disk behaviors of the black hole candidate MAXI J1348-630 in the hard state observed by Insight-HXMT and Swift
• Analysis of the reflection spectra of MAXI J1535-571 in the hard and intermediate states
• A Machine Learning approach for classification of accretion states of Black hole binaries
• A broadband radio view of transient jet ejecta in the black hole candidate X-ray binary MAXI J1535-571
• Testing the dynamic origin of Quasi-periodic Oscillations in MAXI J1535-571 and H 1743-322
• Global Accretion Properties of Black Hole X-Ray Binaries: A Phenomenological Perspective
• AstroSat Observation of Non-Resonant Type-C QPOs in MAXI J1535-571
• MAXI J1535-571 2017 outburst Seen by INTEGRAL/SPI and Investigating the Origin of Its Hard Tail
• A Temporal Scale to Track the Spectral Transitions in Low-Mass X-ray Binaries
• Observational Biases and Improved Modelling of Off-axis Relativistic Jets