Low-Frequency Quasi-Periodic Oscillations in the X-ray Nova MAXI J1535-571 at the Initial Stage of Its 2017 Outburst

Abstract

We report the discovery of low-frequency quasi-periodic oscillations (QPOs) in the power spectrum of the X-ray nova MAXI J1535-571 at the initial stage of its outburst in September 2017. Based on data from the SWIFT and INTEGRAL instruments, we have traced the evolution of the QPO parameters (primarily their frequency) with time and their correlation with changes in the X-ray spectrum of the source (changes in the emission flux and hardness). We place constraints on the theoretical QPO generation models.

arXiv comment12 pages, 7 figures

References in corpus (18)

• The Swift X-ray Telescope
• X-ray Properties of Black-Hole Binaries
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Cited by in corpus (9)

• AstroSat view of MAXI J1535-571: broadband spectro-temporal features
• Broadband reflection spectroscopy of MAXI J1535-571 using AstroSat: Estimation of black hole mass and spin
• Swift Observations of the bright uncatalogued X-ray transient MAXI J1535-571
• The comptonizing medium of the black-hole X-ray binary MAXI~J1535$-$571 through type-C quasi-periodic oscillations
• A NICER look at the state transitions of the black hole candidate MAXI J1535-571 during its reflares
• Testing the dynamic origin of Quasi-periodic Oscillations in MAXI J1535-571 and H 1743-322
• Studying temporal variability of GRS1739-278 during the 2014 outburst
• MAXI J1535-571 2017 outburst Seen by INTEGRAL/SPI and Investigating the Origin of Its Hard Tail
• X-ray and Gamma-ray Emission from a High-Temperature Plasma and the Spectra of Accreting Black Holes