Erratum: Evolution of the Accretion Disk-Corona during the Bright Hard-to-soft State Transition: A Reflection Spectroscopic Study with GX 339-4 (The Astrophysical Journal (2020) 890 (53) DOI: 10.3847/1538-4357/ab64f5)
Sridhar N, Garciá JA, Steiner JF, Connors RM, Grinberg V, Harrison FA (2020)
Publication Type: Journal article, Erratum
Publication year: 2020
Journal
Book Volume: 904
Article Number: 201
Journal Issue: 2
Abstract
The authors would like to report the following error. Figures 5(f) and 7 of the published article depict the evolution of the inner truncation radius (Rin) of the accretion disk, as the black hole X-ray binary system GX 339-4 transitions through the bright hard-tosoft states. The left y-axis labels of the aforementioned figures denote Rin in units of the innermost stable circular orbit (RISCO). However, the right y-axis label-intended to represent Rin in terms of the gravitational radii Rg-has not been correctly normalized, corresponding to the radius in units of RISCO. Specifically in Figure 5(f), 1Rg is equated to ?∼1.24RISCO for an assumed spin of a∗?=?0.998, which should have rather been the inverse: 1RISCO?;1.24Rg. Likewise in Figure 7, 1Rg is equated to 1.94RISCO for an assumed spin of a∗?=?0.95, which should have rather been: 1RISCO;1.94Rg. Furthermore, in the published article, we defined the gravitational radius as Rg=GM/c2 (Schwarzschild radius, where M is the black hole's mass); we redefine it here as Rg?=?GM/c2 to be consistent with the usual definition of gravitational radius in the literature. The updated right y-axis tick labels are presented here in the revised Figures 5 and 7. With these amendments, we would like to highlight the excellent agreement of the inner disk truncation values obtained from the continuum fitting method (solid circles in Figure 7), with the reflection fitting measurements (gray rhombus in Figure 7). The overall conclusion of the published article-that the inner disk truncation radius is very mildly truncated in the bright hard state (Rin?∼?10Rg), and stays close to RISCO with a gradual shrink in inner disk truncation throughout the transition from the bright hard-tosoft state-is not affected by the change in the y-axis tick label values incorporated here. (Figure Presented).
Involved external institutions
Columbia University
United States (USA) (US)
California Institute of Technology (Caltech)
United States (USA) (US)
Massachusetts Institute of Technology (MIT)
United States (USA) (US)
Eberhard Karls Universität Tübingen
Germany (DE)
United States (USA) (US)
California Institute of Technology (Caltech)
United States (USA) (US)
Massachusetts Institute of Technology (MIT)
United States (USA) (US)
Eberhard Karls Universität Tübingen
Germany (DE)
How to cite
APA:
Sridhar, N., Garciá, J.A., Steiner, J.F., Connors, R.M., Grinberg, V., & Harrison, F.A. (2020). Erratum: Evolution of the Accretion Disk-Corona during the Bright Hard-to-soft State Transition: A Reflection Spectroscopic Study with GX 339-4 (The Astrophysical Journal (2020) 890 (53) DOI: 10.3847/1538-4357/ab64f5). Astrophysical Journal, 904(2). https://doi.org/10.3847/1538-4357/abcb95
MLA:
Sridhar, Navin, et al. "Erratum: Evolution of the Accretion Disk-Corona during the Bright Hard-to-soft State Transition: A Reflection Spectroscopic Study with GX 339-4 (The Astrophysical Journal (2020) 890 (53) DOI: 10.3847/1538-4357/ab64f5)." Astrophysical Journal 904.2 (2020).
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