A detailed study on the reflection component for the Black Hole Candidate MAXI J1836-194

Abstract

We present a detailed spectral analysis of the black hole candidate MAXI J1836-194. The source was caught in the intermediate state during its 2011 outburst by Suzaku and RXTE. We jointly fit the X-ray data from these two missions using the relxill model to study the reflection component, and a steep inner emissivity profile indicating a compact corona as the primary source is required in order to achieve a good fit. In addition, a reflection model with a lamp-post configuration (relxilllp), which is normally invoked to explain the steep emissivity profile, gives a worse fit and is excluded at 99% confidence level compared to relxill. We also explore the effect of the ionization gradient on the emissivity profile by fitting the data with two relativistic reflection components, and it is found that the inner emissivity flattens. These results may indicate that the ionization state of the disc is not constant. All the models above require a supersolar iron abundance higher than 4.5. However, we find that the high-density version of reflionx can describe the same spectra even with solar iron abundance well. A moderate rotating black hole (a* = 0.84-0.94) is consistently obtained by our models, which is in agreement with previously reported values.

Accepted for publication in MNRAS

References in corpus (52)

• On the Absorption of X-rays in the Interstellar Medium
• Atomic Data for Astrophysics. II. New Analytic Fits for Photoionization Cross Sections of Atoms and Ions
• Broad-band gamma-ray and X-ray spectra of NGC 4151 and their implications for physical processes and geometry
• Improved Reflection Models of Black-Hole Accretion Disks: Treating the Angular Distribution of X-rays
• The May 1989 outburst of the Soft X-ray Transient GS 2023+338 (V404 Cyg)
• The Spin of the Near-Extreme Kerr Black Hole GRS 1915+105
• Broad iron lines in Active Galactic Nuclei
• Constraining Black Hole Spin Via X-ray Spectroscopy
• A light bending model for the X-ray temporal and spectral properties of accreting black holes
• X-ray reflected spectra from accretion disk models. III. A complete grid of ionized reflection calculations
• Measuring Black Hole Spin using X-ray Reflection Spectroscopy
• Irradiation of an Accretion Disc by a Jet: General Properties and Implications for Spin Measurements of Black Holes
• The role of the reflection fraction in constraining black hole spin
• X-ray reflected spectra from accretion disk models. I. Constant density atmospheres
• Broad emission lines for negatively spinning black holes
• Suzaku observations of 'bare' active galactic nuclei
• X-ray reflection spectra from ionized slabs
• Stellar-mass Black Hole Spin Constraints from Disk Reflection and Continuum Modeling
• Understanding X-ray reflection emissivity profiles in AGN: Locating the X-ray source
• Iron fluorescence from within the innermost stable orbit of black hole accretion disks
• The Spin of the Supermassive Black Hole in NGC 3783
• X-ray Reflection Spectroscopy of the Black Hole GX 339-4: Exploring the Hard State with Unprecedented Sensitivity
• High-Density Effects in X-ray Reflection Models from Accretion Disks
• NuSTAR Spectroscopy of GRS 1915+105: Disk Reflection, Spin, and Connections to Jets
• On the determination of the spin of the black hole in Cyg X-1 from X-ray reflection spectra
• The NuSTAR spectrum of Mrk 335: Extreme relativistic effects within 2 gravitational radii of the event horizon?
• Alternative explanations for extreme supersolar iron abundances inferred from the energy spectrum of Cygnus X-1
• 1H0707-495 in 2011: An X-ray source within a gravitational radius of the event horizon
• X-ray reflection in accreting stellar-mass black hole systems
• Determination of the X-ray reflection emissivity profile of 1H 0707-495
• Driving extreme variability: The evolving corona and evidence for jet launching in Markarian 335
• The Soft State of Cygnus X-1 Observed with NuSTAR: A Variable Corona and a Stable Inner Disk
• X-ray reflected spectra from accretion disk models.II. Diagnostic tools for X-ray observations
• The 1.5 Ms Observing Campaign on IRAS 13224-3809: X-ray Spectral Analysis I
• The accretion-ejection coupling in the black hole candidate X-ray binary MAXI J1836-194
• Reflection Spectra of the Black Hole Binary Candidate MAXI J1535-571 in the Hard State Observed by NuSTAR
• Towards precision tests of general relativity with black hole X-ray reflection spectroscopy
• The Black Hole Spin and Soft X-ray Excess of the Luminous Seyfert Galaxy Fairall 9
• Origin of the X-ray disc-reflection steep radial emissivity
• Suzaku Observation of the Black Hole Candidate MAXI J1836-194 in a Hard/Intermediate Spectral State
• Data-oriented Diagnostics of Pileup Effects on the Suzaku XIS
• Reflection Spectroscopy of the Black Hole Binary XTE J1752-223 in its Long-Stable Hard State
• The 2017 Failed Outburst of GX 339-4: Relativistic X-ray Reflection near the Black Hole Revealed by NuSTAR and Swift Spectroscopy
• The face-on disk of MAXI J1836-194
• Revealing the broad iron Kalpha line in Cygnus X-1 through simultaneous XMM-Newton, RXTE, and INTEGRAL observations
• The first outburst of the black hole candidate MAXI J1836-194 observed by INTEGRAL, Swift, and RXTE
• A Low-Flux State in IRAS 00521-7054 seen with NuSTAR and XMM-Newton: Relativistic Reflection and an Ultrafast Outflow
• A Relativistic Disc Reflection Model for 1H0419-577: Multi-Epoch Spectral Analysis with XMM-Newton and NuSTAR
• Steep X-ray reflection emissivity profiles in AGN as the result of radially-structured disc ionisation
• Quiescent NIR and optical counterparts to candidate black hole X-ray binaries
• The Spin of the Supermassive Black Hole in MCG-05-23-16
• Evolution of spectral and temporal properties of MAXI J1836-194 during 2011 outburst

Cited by in corpus (11)

• The INTEGRAL view on Black Hole X-ray Binaries
• Detailed analysis on the reflection component for the black hole candidate MAXI J1348-630
• Correlating spectral and timing properties in the evolving jet of the micro blazar MAXI J1836-194
• Analysis of the reflection spectra of MAXI J1535-571 in the hard and intermediate states
• Using X-ray continuum-fitting to estimate the spin of MAXI J1305-704
• The spin measurement of MAXI J1348-630 using the Insight-HXMT data
• Plasma environment effects on K lines of astrophysical interest. V. Universal formulae for ionization potential and K-threshold shifts
• Emission lines from X-ray illuminated accretion disc in black hole binaries
• The spin measurement of MAXI J0637-430: a black hole candidate with high disk density
• Black hole spin estimation of XTE J2012+381 using simultaneous observations of Swift/XRT and NuSTAR
• Spectral Analysis of New Black Hole Candidate AT2019wey Observed by NuSTAR