Systematically Revisiting All NuSTAR Spins of Black Holes in X-Ray Binaries

Abstract

We extend our recent work on black hole spin in X-ray binary systems to include an analysis of 189 archival NuSTAR observations from 24 sources. Using self-consistent data reduction pipelines, spectral models, and statistical techniques, we report an unprecedented and uniform sample of 36 stellar-mass black hole spin measurements based on relativistic reflection. This treatment suggests that prior reports of low spins in a small number of sources were generally erroneous: our comprehensive treatment finds that those sources tend to harbor black holes with high spin values. Overall, within $1\sigma$ uncertainty, $\sim 86\%$ of the sample are consistent with $a\ge 0.95$, $\sim 94\%$ of the sample are consistent with $a\ge 0.9$, and $100\%$ is consistent with $a\ge 0.7$ (the theoretical maximum for neutron stars; $a=cJ/G{M}^2$). We also find that the high-mass X-ray binaries (those with A-, B-, or O-type companions) are consistent with $a\ge 0.9$ within the $1\sigma$ errors; this is in agreement with the low-mass X-ray binary population and may be especially important for comparisons to black holes discovered in gravitational wave events. In some cases, different spectra from the same source yield similar spin measurements but conflicting values for the inclination of the inner disk; we suggest that this is due to variable disk winds obscuring the blue wing of the relativistic Fe K emission line. We discuss the implications of our measurements, the unique view of systematic uncertainties enabled by our treatment, and future efforts to characterize black hole spins with new missions.

22 pages in main body, including 6 figures and one table. 48 figures in appendices. Published in ApJ

References in corpus (32)

• Array Programming with NumPy
• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• Modelling the behaviour of accretion flows in X-ray binaries
• Constraining Black Hole Spin Via X-ray Spectroscopy
• The role of the reflection fraction in constraining black hole spin
• Cygnus X-1 contains a 21-solar mass black hole -- implications for massive star winds
• A Parallax Distance to the Microquasar GRS 1915+105 and a Revised Estimate of its Black Hole Mass
• A Determination of the Spin of the Black Hole Primary in LMC X-1
• Suzaku observations of Mrk 335: Confronting partial covering and relativistic reflection
• Determination of mass of IGR J17091-3624 from "Spectro-Temporal" variations during onset-phase of the 2011 outburst
• New Constraints on the Black Hole Low/Hard State Inner Accretion Flow with NuSTAR
• A Systematic View of Ten New Black Hole Spins
• A New Spin on an Old Black Hole: NuSTAR Spectroscopy of EXO 1846-031
• A giant X-ray dust scattering ring around the black hole transient MAXI J1348-630 discovered with SRG/eROSITA
• An HI absorption distance to the black hole candidate X-ray binary MAXI J1535-571
• NuSTAR Observations of the Black Hole GS 1354-645: Evidence of Rapid Black Hole Spin
• Detailed analysis on the reflection component for the black hole candidate MAXI J1348-630
• Do high-spin high-mass X-ray binaries contribute to the population of merging binary black holes?
• Estimation of the black hole spin in LMC X-1 using AstroSat
• First X-ray polarization measurement confirms the low black-hole spin in LMC X-3
• The spin of the black hole GRS 1716-249 determined from the hard intermediate state
• The Spin of New Black Hole Candidate: MAXI J1803-298 Observed by NuSTAR and NICER
• NuSTAR and Chandra observations of new X-ray transients in the central parsec of the Galaxy
• Analysis of the reflection spectra of MAXI J1535-571 in the hard and intermediate states
• NuSTAR and Swift Observations of the Extragalactic Black Hole X-ray Binaries
• Timing Analysis of a New Black Hole Candidate MAXI J1803-298 with Insight-HXMT and NICER
• Broadband X-ray analysis of 1E 1740.7-2942: constraints on spin, inclination and a tentative black hole mass
• Accretion Properties of MAXI J1813-095 during its Failed Outburst in 2018
• Reflection and timing study of the transient black hole X-ray binary MAXI J1803-298 with NuSTAR
• MAXI and NuSTAR observations of the faint X-ray transient MAXI J1848-015 in the GLIMPSE-C01 Cluster
• The Spin of a Newborn Black Hole: Swift J1728.9-3613
• A NuSTAR and Swift View of the Hard State of MAXI J1813-095

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