A Variable Ionized Disk Wind in the Black Hole Candidate EXO 1846–031

Wang, Yanan; Ji, Long; Garcia, J. Rodriguez; Dauser, Thomas; Méndez, Mariano; Mao, Junjie; Tao, Lian; Altamirano, D.; Maggi, Pierre; Zhang, S. N.; Ge, M. Y.; Zhang, L.; Qu, J. L.; Zhang, S.; Ma, Xiang; Li, T. P.; Huang, Y.; Zheng, S.; Chang, Zhi; Tuo, Y. L.; Song, L. M.; Chen, Y.; Liu, C. Z.; Bu, Q. C.; Cai, C.; Cao, X. L.; Chen, L.; Chen, T. X.; Chen, Y. P.; Cui, Wei; Du, Y. Y.; Gao, G. H.; Gu, Y. D.; Guan, J.; Guo, Chengcheng; Han, Danxiang; Jia, Haiqiang; Jia, S.; Jiang, Weichun; Jin, J.; Kong, L. D.; Li, B.; Li, C. K.; Li, G.; Li, W.; Li, X.; Li, X. B.; Li, X. F.; Li, Z. W.; Liang, X. H.; Liao, J. Y.; Liu, Han–Wen; Liu, X. J.; Lu, X. F.; Luo, Q.; Luo, T.; Meng, Bin; Nang, Y.; Nie, J. Y.; Ou, G.; Sai, N.; Shang, R. C.; Song, X. Y.; Sun, Liang; Tan, Ying; Wang, W. S.; Wang, Y. D.; Wang, Y. S.; Wen, Xiang-Yang; Wu, B. B.; Wu, B. Y.; Wu, Mei‐Hwan; Xiao, G. C.; Xiao, Shuo; Xiong, Shaoxiang; Yang, S.; Yang, Yi-Jung; Yi, Q. B.; Yin, Q. Q.; You, Y.; Zhang, Faming; Zhang, H. M.; Zhang, J.; Zhang, W. C.; Zhang, W.; Zhang, Y. F.; Zhao, H. S.; Zhao, Xiaofan; Zhou, D. K.

doi:10.3847/1538-4357/abc55e

Cited by 24 publications

(18 citation statements)

References 72 publications

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“…In this process, we also apply the ftool grppha to group the data to make sure each energy bin contains more than 30 counts. Previous studies on this observation of EXO 1846-031 reveal that the system has a high spin (a * ∼ 0.997), the source is observed in a high-luminosity hard state, where the inner radius R in is close to R ISCO , and the relativistic reflection features are strong [39,40]. All these ingredients make this observation/source ideal for testing the Kerr hypothesis.…”

Section: Observations and Data Reductionmentioning

confidence: 71%

Constraining the Konoplya-Rezzolla-Zhidenko deformation parameters II: limits from stellar-mass black hole X-ray data

Yu,

Jiang,

Abdikamalov

et al. 2021

Preprint

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Astrophysical black holes are thought to be the Kerr black holes predicted by general relativity, but macroscopic deviations from the Kerr solution can be expected from a number of scenarios involving new physics. In Paper I, we studied the reflection features in NuSTAR and XMM-Newton spectra of the supermassive black hole at the center of the galaxy MCG-06-30-15 and we constrained a set of deformation parameters proposed by Konoplya, Rezzolla & Zhidenko (Phys. Rev. D93, 064015, 2016). In the present work, we analyze the X-ray data of a stellar-mass black hole within the same theoretical framework in order to probe a different curvature regime. We consider a NuSTAR observation of the X-ray binary EXO 1846-031 during its outburst in 2019. As in the case of Paper I, all our fits are consistent with the Kerr black hole hypothesis, but some deformation parameters cannot be constrained well.

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Section: Observations and Data Reductionmentioning

confidence: 71%

Constraining the Konoplya-Rezzolla-Zhidenko deformation parameters II: limits from stellar-mass black hole X-ray data

Yu,

Jiang,

Abdikamalov

et al. 2021

Preprint

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“…This is a general relativistic effect theoretically predicted by Cunningham (1976), in which thermal disk photons are returned to the other regions of the disk due to the strong gravitational bending. The first observational evidences for returning radiation was recently found in soft-state observations of several black hole binaries, such as XTE J1550−564 (Connors et al 2020), 4U 1630−47 (Connors et al 2021, EXO 1846-031 (Wang et al 2021), and MAXI J0637−430 (Lazar et al 2021). In all these works, the relxillNS model was implemented in the spectral fits as a proxy for reflection produced by returning disk radiation.…”

Section: Discussionmentioning

confidence: 99%

Relativistic X-ray Reflection Models for Accreting Neutron Stars

Garcia,

Dauser,

Ludlam

et al. 2021

Preprint

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We present new reflection models specifically tailored to model the X-ray radiation reprocessed in accretion disks around neutron stars, in which the primary continuum is characterized by a single temperature blackbody spectrum, emitted either at the surface of the star, or at the boundary layer. These models differ significantly from those with a standard power-law continuum, typically observed in most accreting black holes. We show comparisons with earlier reflection models, and test their performance in the NuSTAR observation of the neutron star 4U 1705−44. Simulations of upcoming missions such as XRISM-Resolve and Athena X-IFU are shown to highly the diagnostic potential of these models for high-resolution X-ray reflection spectroscopy. These new reflection models xillverNS, and their relativistic counterpart relxillNS, are made publicly available to the community as an additional flavor in the relxill suite of reflection models.

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“…Disc winds in BHBs are generally known to have an equatorial geometry (e.g., Ponti et al 2012a). However, recent evidences (Chiang et al 2012;Xu et al 2020;Wang et al 2021) hint towards the existence of ultrafast winds even in non-equatorial directions. Among the prevalent driving mechanisms proposed, the thermally driven winds prefer high inclinations (Tomaru et al 2020), while the MHD-driven winds can flow out at all directions (Fukumura et al 2017).…”

Section: Discussionmentioning

confidence: 99%

NuSTAR monitoring of MAXI J1348-630: evidence of high density disc reflection

Chakraborty,

Ratheesh,

Bhattacharyya

et al. 2021

Preprint

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We present the broadband spectral analysis of all the six hard, intermediate and soft state NuSTAR observations of the recently discovered transient black hole X-ray binary MAXI J1348-630 during its first outburst in 2019. We first model the data with a combination of a multi-colour disc and a relativistic blurred reflection, and, whenever needed, a distant reflection. We find that this simple model scheme is inadequate in explaining the spectra, resulting in a very high iron abundance. We, therefore, explore the possibility of reflection from a high-density disc. We use two different sets of models to describe the high-density disc reflection: relxill-based reflection models, and reflionx-based ones. The reflionx-based high-density disc reflection models bring down the iron abundance to around the solar value, while the density is found to be 10 20.3−21.4 cm −3 . We also find evidence of a high-velocity outflow in the form of ∼7.3 keV absorption lines. The consistency between the best-fit parameters for different epochs and the statistical significance of the corresponding model indicates the existence of high-density disc reflection in MAXI J1348-630.

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A Variable Ionized Disk Wind in the Black Hole Candidate EXO 1846–031

Cited by 24 publications

References 72 publications

Constraining the Konoplya-Rezzolla-Zhidenko deformation parameters II: limits from stellar-mass black hole X-ray data

Constraining the Konoplya-Rezzolla-Zhidenko deformation parameters II: limits from stellar-mass black hole X-ray data

Relativistic X-ray Reflection Models for Accreting Neutron Stars

NuSTAR monitoring of MAXI J1348-630: evidence of high density disc reflection

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