NICER observations of the black hole candidate MAXI J0637$-$430 during the 2019-2020 Outburst

Abstract

We present detailed timing and spectral studies of the black hole candidate MAXI J0637$-$430 during its 2019-2020 outburst using observations with the {\em Neutron Star Interior Composition Explorer (NICER)} and the {\em Neil Gehrels Swift Observatory}. We find that the source evolves through the soft-intermediate, high-soft, hard-intermediate and low-hard states during the outburst. No evidence of quasi-periodic oscillations is found in the power density spectra of the source. Weak variability with fractional rms amplitude $<5\%$ is found in the softer spectral states. In the hard-intermediate and hard states, high variability with the fractional rms amplitude of $>20\%$ is observed. The $0.7-10$ keV spectra with {\em NICER} are studied with a combined disk-blackbody and nthcomp model along with the interstellar absorption. The temperature of the disc is estimated to be $0.6$ keV in the rising phase and decreased slowly to $0.1$ keV in the declining phase. The disc component was not detectable or absent during the low hard state. From the state-transition luminosity and the inner edge of the accretion flow, we estimate the mass of the black hole to be in the range of 5$-$12 $M_{\odot }$, assuming the source distance of $d<10$ kpc.

arXiv comment14 pages, 11 figures, 1 table. Accepted for publication in MNRAS

References in corpus (42)

• On the Absorption of X-rays in the Interstellar Medium
• X-ray Properties of Black-Hole Binaries
• Atomic Data for Astrophysics. II. New Analytic Fits for Photoionization Cross Sections of Atoms and Ions
• Methods and results of an automatic analysis of a complete sample of Swift-XRT observations of GRBs
• HI4PI: A full-sky HI survey based on EBHIS and GASS
• Modelling the behaviour of accretion flows in X-ray binaries
• Millisecond Oscillations in X-Ray Binaries
• The May 1989 outburst of the Soft X-ray Transient GS 2023+338 (V404 Cyg)
• A Unified Description of the Timing Features of Accreting X-ray Binaries
• Correlated X-ray Spectral and Timing Behavior of the Black Hole Candidate XTE J1550-564: A New Interpretation of Black Hole States
• Spectral Properties of Accretion Disks Around Galactic and Extragalactic Black Holes
• The Properties of X-Ray and Optical Light Curves of X-Ray Novae
• The evolution of the timing properties of the black-hole transient GX 339-4 during its 2002/2003 outburst
• Radiation mechanisms and geometry of Cygnus X-1 in the soft state
• The evolution of black hole states
• GRS 1915+105 and the Disc-Jet Coupling in Accreting Black Hole Systems
• The ABC of low-frequency quasi-periodic oscillations in Black-Hole Candidates: analogies with Z-sources
• Do X-ray Binary Spectral State Transition Luminosities Vary?
• WATCHDOG: A Comprehensive All-Sky Database of Galactic Black Hole X-ray Binaries
• A Global Spectral Study of Black Hole X-ray Binaries
• Resonance Oscillation Of Radiative Shock Waves In Accretion Disks Around Compact Objects
• Are There Three Peaks in the Power Spectra of GX 339-4 and Cyg X-1?
• Black hole accretion discs: reality confronts theory
• Accretion flow dynamics during the evolution of timing and spectral properties of GX 339-4 during its 2010-11 outburst
• Correlation among QPO frequencies and Quiescence-state Duration in Black Hole Candidate GRS 1915+105
• The EXOSAT data on GX 339-4: further evidence for an ``intermediate'' state
• Fast variability as a tracer of accretion regimes in black hole transients
• Black hole-like hysteresis and accretion states in neutron star low mass X-ray binaries
• Mechanisms for High-frequency QPOs in Neutron Star and Black Hole Binaries
• A transient radio jet in an erupting dwarf nova
• Variability of X-ray binaries from an oscillating hot corona
• Study of the Temporal Behavior of 4U 1728-34 as a Function of its Position in the Color-Color Diagram
• Accretion flow dynamics of MAXI J1836-194 during its 2011 outburst from TCAF solution
• On the Spectral Slopes of Hard X-ray Emission from Black Hole Candidates
• A Global Study of the Behaviour of Black Hole X-ray Binary Discs
• NICER observations reveal that the X-ray transient MAXI J1348-630 is a Black Hole X-ray binary
• An evolving broad iron line from the first Galactic ultraluminous X-ray pulsar Swift J0243.6+6124
• Accretion Flow Evolution of a New Black Hole Candidate MAXI J1348-630 During the 2019 Outburst
• X-ray Spectral and Timing evolution of MAXI J1727-203 with NICER
• Testing the relativistic precession model using low frequency and kHz quasi-periodic oscillations in neutron star low mass X-ray binaries with known spin
• NICER Detects a Soft X-ray Kilohertz Quasi-periodic Oscillation in 4U 0614+09
• High-frequency variability in neutron-star low-mass X-ray binaries

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• AstroSat Observation of X-ray Dips and State Transition in the Black Hole Candidate MAXI J1803-298
• Revealing the nature of the transient source MAXI J0637-430 through spectro-temporal analysis
• NuSTAR and Swift Observations of the Extragalactic Black Hole X-ray Binaries
• A 2-hr binary period for the black hole transient MAXI J0637-430
• The peculiar spectral evolution of the new X-ray transient MAXI J0637-430
• Optical polarization signatures of black hole X-ray binaries
• Global Accretion Properties of Black Hole X-Ray Binaries: A Phenomenological Perspective
• Spectral properties of soft X-ray transient MAXI J0637$-$430 using AstroSat
• Broadband X-ray Spectroscopy and Estimation of Spin of the Galactic Black Hole Candidate GRS 1758-258
• The spin measurement of MAXI J0637-430: a black hole candidate with high disk density
• Spectral and Timing Analysis of NuSTAR and Swift/XRT Observations of the X-Ray Transient MAXI J0637-430
• A self-shadowing black hole accretion disk at sub-Eddington luminosities