Related papers: Accretion geometry of the black hole binary MAXI J…

The soft component and the iron line as signatures of the disc inner radius in Galactic black hole binaries

The inner radius of the accretion disc around a black hole in the low/hard state can be measured in one of two ways. Firstly, via the extent of broadening of the iron emission line, and secondly, from the luminosity and temperature of the…

High Energy Astrophysical Phenomena · Physics 2015-06-17 M. Kolehmainen , C. Done , M. Diaz Trigo

The 2018 outburst of MAXI J1820+070 as seen by Insight-HXMT

We present an analysis of the whole 2018 outburst of the black hole X-ray binary MAXI J1820+070 with Insight-HXMT data. We focus our study on the temporal evolution of the parameters of the source. We employ two different models to fit the…

High Energy Astrophysical Phenomena · Physics 2024-07-03 Ningyue Fan , Songyu Li , Rui Zhan , Honghui Liu , Zuobin Zhang , Cosimo Bambi , Long Ji , Xiang Ma , James F. Steiner , Shuang-Nan Zhang , Menglei Zhou

We have compared the 2001 XMM-Newton spectra of the stellar mass black hole binary XTE J1650-500 and the active galaxy MGC-6-30-15, focusing on the broad, excess emission features at ~4--7 keV displayed by both sources. Such features are…

High Energy Astrophysical Phenomena · Physics 2015-06-04 D. J. Walton , R. C. Reis , E. M. Cackett , A. C. Fabian , J. M. Miller

The Effects of Complex Accretion Disk Geometry on Broadened Iron K$\alpha$ Lines

X-rays are emitted from the corona above the orbiting matter of the accretion disk and travel either directly to us or illuminate the disk. This illumination of the inner disk is enhanced by gravitational light bending, which focuses the…

High Energy Astrophysical Phenomena · Physics 2026-04-27 William Surgent , Daniel R. Wilkins

The Problem of the High Iron Abundance in Accretion Disks around Black Holes

In most accreting black-hole systems the copious X-rays commonly observed from the inner-most regions are accompanied by a reflection spectrum. The latter is the signature of energetic photons reprocessed by the optically thick material of…

High Energy Astrophysical Phenomena · Physics 2018-05-03 J. A. García , T. R. Kallman , M. Bautista , C. Mendoza , J. Deprince , P. Palmeri , P. Quinet

Measuring fundamental jet properties with multi-wavelength fast timing of the black hole X-ray binary MAXI J1820+070

We present multi-wavelength fast timing observations of the black hole X-ray binary MAXI J1820+070 (ASASSN-18ey), taken with the Karl G. Jansky Very Large Array (VLA), Atacama Large Millimeter/Sub-Millimeter Array (ALMA), Very Large…

High Energy Astrophysical Phenomena · Physics 2021-03-31 A. J. Tetarenko , P. Casella , J. C. A. Miller-Jones , G. R. Sivakoff , J. A. Paice , F. M. Vincentelli , T. J. Maccarone , P. Gandhi , V. S. Dhillon , T. R. Marsh , T. D. Russell , P. Uttley

Investigating the Hard State of MAXI J1820+070: A Comprehensive Bayesian Approach to Black Hole Spin and Accretion Properties

We analyse the X-ray spectrum of the black hole X-ray binary MAXI J1820+070 using observations from XMM-Newton and NuSTAR during 'hard' states of its 2018-2019 outburst. We take a fully Bayesian approach, and this is one of the first papers…

High Energy Astrophysical Phenomena · Physics 2024-02-20 Sachin D. Dias , Simon Vaughan , Mehdy Lefkir , Graham Wynn

A timing study of MAXI J1820+070 based on Swift/XRT and NICER monitoring in 2018/19

We present a detailed timing analysis of the bright black hole X-ray binary MAXI J1820+070 (ASASSN-18ey), during its first detected outburst lasting from March 2018 until October 2019 based on Swift/XRT window timing mode observations,…

High Energy Astrophysical Phenomena · Physics 2020-02-12 H. Stiele , A. K. H. Kong

Discovery of a broad iron line in the black-hole candidate Swift J1753.5-0127, and the disk emission in the low/hard state revisited

We analyzed simultaneous archival XMM-Newton and RXTE observations of the X-ray binary and black hole candidate Swift J1753.5-0127. In a previous analysis of the same data a soft thermal component was found in the X-ray spectrum, and the…

High Energy Astrophysical Phenomena · Physics 2015-05-13 Beike Hiemstra , Paolo Soleri , Mariano Mendez , Tomaso Belloni , Reham Mostafa , Rudy Wijnands

Revealing accretion onto black holes: X-ray reflection throughout three outbursts of GX 339-4

Understanding the dynamics behind black hole state transitions and the changes they reflect in outbursts has become long-standing problem. The X-ray reflection spectrum describes the interaction between the hard X-ray source (the power-law…

High Energy Astrophysical Phenomena · Physics 2015-06-19 D. S. Plant , R. P. Fender , G. Ponti , T. Muñoz-Darias , M. Coriat

The accretion-ejection coupling in the black hole candidate X-ray binary MAXI J1836-194

We present the results of our quasi-simultaneous radio, sub-mm, infrared, optical and X-ray study of the Galactic black hole candidate X-ray binary MAXI J1836-194 during its 2011 outburst. We consider the full multi-wavelength spectral…

High Energy Astrophysical Phenomena · Physics 2015-06-18 T. D. Russell , R. Soria , J. C. A. Miller-Jones , P. A. Curran , S. Markoff , D. M. Russell , G. R. Sivakoff

Accretion flow diagnostics with X-ray spectral-timing: the hard state of SWIFT J1753.5-0127

(Abridged) Recent XMM-Newton studies of X-ray variability in the hard states of black hole X-ray binaries (BHXRBs) imply that the variability is generated in the 'standard' optically-thick accretion disc. The variability originates in the…

High Energy Astrophysical Phenomena · Physics 2015-06-11 P. Cassatella , P. Uttley , T. J. Maccarone

A Black Hole X-ray Binary at $\sim$100 Hz: Multiwavelength Timing of MAXI J1820+070 with HiPERCAM and NICER

We report on simultaneous sub-second optical and X-ray timing observations of the low mass X-ray binary black hole candidate MAXI J1820+070. The bright 2018 outburst rise allowed simultaneous photometry in five optical bands ($ugriz_s$)…

High Energy Astrophysical Phenomena · Physics 2019-10-11 J. A. Paice , P. Gandhi , T. Shahbaz , P. Uttley , Z. Arzoumanian , P. A. Charles , V. S. Dhillon , K. C. Gendreau , S. P. Littlefair , J. Malzac , S. Markoff , T. R. Marsh , R. Misra , D. M. Russell , A. Veledina

Iron-line and continuum flux variations in the RXTE spectra of the black-hole candidate XTE J1650-500

We present the results of spectral fits made to 57 pointed observations of the Galactic black hole candidate and X-ray transient XTE J1650-500, made with the Rossi X-ray Timing Explorer in 2001 when the source was in a transition from the…

Astrophysics · Physics 2009-11-11 Sabrina Rossi , Jeroen Homan , Jon M. Miller , Tomaso Belloni

Physical origin of the nonphysical spin evolution of MAXI J1820+070

We report on the Insight-HXMT observations of the new black hole X-ray binary MAXI J1820+070 during its 2018 outburst. Detailed spectral analysis via the continuum fitting method shows an evolution of the inferred spin during its high soft…

High Energy Astrophysical Phenomena · Physics 2021-04-14 J. Guan , L. Tao , J. L. Qu , S. N. Zhang , W. Zhang , S. Zhang , R. C. Ma , M. Y. Ge , L. M. Song , F. J. Lu , T. P. Li , Y. P. Xu , Y. Chen , X. L. Cao , C. Z. Liu , L. Zhang , Y. N. Wang , Y. P. Chen , Q. C. Bu , C. Cai , Z. Chang , L. Chen , T. X. Chen , Y. B. Chen , W. W. Cui , Y. Y. Du , G. H. Gao , H. Gao , Y. D. Gu , C. C. Guo , D. W. Han , Y. Huang , J. Huo , S. M. Jia , W. C. Jiang , J. Jin , L. D. Kong , B. Li , C. K. Li , G. Li , W. Li , X. Li , X. B. Li , X. F. Li , Z. W. Li , X. H. Liang , J. Y. Liao , B. S. Liu , H. W. Liu , H. X. Liu , X. J. Liu , X. F. Lu , Q. Luo , T. Luo , X. Ma , B. Meng , Y. Nang , J. Y. Nie , G. Ou , X. Q. Ren , N. Sai , X. Y. Song , L. Sun , Y. Tan , C. Wang , L. J. Wang , P. J. Wang , W. S. Wang , Y. S. Wang , X. Y. Wen , B. B. Wu , B. Y. Wu , M. Wu , G. C. Xiao , S. Xiao , S. L. Xiong , R. J. Yang , S. Yang , Y. J. Yang , Y. J. Yang , Q. B. Yi , Q. Q. Yin , Y. You , F. Zhang , H. M. Zhang , J. Zhang , P. Zhang , W. C. Zhang , Y. F. Zhang , Y. H. Zhang , H. S. Zhao , X. F. Zhao , S. J. Zheng , Y. G. Zheng , D. K. Zhou

The evolution of the broadband temporal features observed in the black-hole transient MAXI J1820+070 with Insight-HXMT

We study the evolution of the temporal properties of MAXI 1820+070 during the 2018 outburst in its hard state from MJD 58190 to 58289 with Insight-HXMT in a broad energy band 1-150 keV. We find different behaviors of the hardness ratio, the…

High Energy Astrophysical Phenomena · Physics 2020-06-17 Yanan Wang , Long Ji , S. N. Zhang , Mariano Méndez , J. L. Qu , Pierre Maggi , M. Y. Ge , Erlin Qiao , L. Tao , S. Zhang , Diego Altamirano , L. Zhang , X. Ma , F. J. Lu , T. P. Li , Y. Huang , S. J. Zheng , Y. P. Chen , Z. Chang , Y. L. Tuo , C. Gungor , L. M. Song , Y. P. Xu , X. L. Cao , Y. Chen , C. Z. Liu , Q. C. Bu , C. Cai , G. Chen , L. Chen , T. X. Chen , Y. B. Chen , W. Cui , W. W. Cui , J. K. Deng , Y. W. Dong , Y. Y. Du , M. X. Fu , G. H. Gao , H. Gao , M. Gao , Y. D. Gu , J. Guan , C. C. Guo , D. W. Han , J. Huo , S. M. Jia , L. H. Jiang , W. C. Jiang , J. Jin , Y. J. Jin , L. D. Kong , B. Li , C. K. Li , G. Li , M. S. Li , W. Li , X. Li , X. B. Li , X. F. Li , Y. G. Li , Z. W. Li , X. H. Liang , J. Y. Liao , G. Q. Liu , H. W. Liu , X. J. Liu , Y. N. Liu , B. Lu , X. F. Lu , Q. Luo , T. Luo , B. Meng , Y. Nang , J. Y. Nie , G. Ou , N. Sai , R. C. Shang , X. Y. Song , L. Sun , Y. Tan , G. F. Wang , J. Wang , W. S. Wang , Y. D. Wang , Y. S. Wang , X. Y. Wen , B. B. Wu , B. Y. Wu , M. Wu , G. C. Xiao , S. Xiao , S. L. Xiong , J. W. Yang , S. Yang , Y. J. Yang , Q. B. Yi , Q. Q. Yin , Y. You , A. M. Zhang , C. M. Zhang , F. Zhang , H. M. Zhang , J. Zhang , T. Zhang , W. C. Zhang , W. Zhang , W. Z. Zhang , Y. Zhang , Y. F. Zhang , Y. J. Zhang , Y. Zhang , Z. Zhang , Z. L. Zhang , H. S. Zhao , X. F. Zhao , D. K. Zhou , J. F. Zhou , R. L. Zhuang , Y. X. Zhu , Y. Zhu

Iron K-alpha Fluorescent Line Profiles from Spiral Accretion Flows in AGNs

We present 6.4 keV iron K-alpha fluorescent line profiles predicted for a relativistic black hole accretion disk in the presence of a spiral motion in Kerr geometry, the work extended from an earlier literature motivated by recent…

Astrophysics · Physics 2011-05-10 Keigo Fukumura , Sachiko Tsuruta

Revisiting the galactic X-ray binary MAXI J1631-479: Implications for high inclination and a massive black hole

X-ray spectroscopy of galactic black hole binaries serve as a powerful tool to gain an overall understanding of the system. Not only can the properties of the accretion disk be studied in detail, the fundamental properties of the black hole…

High Energy Astrophysical Phenomena · Physics 2023-02-16 Sandeep K. Rout , Santosh Vadawale , Javier Garcia , Riley Connors

Are spectral and timing correlations similar in different spectral states in black hole X-ray binaries?

We study the outbursts of the black hole X-ray binaries MAXI J1659-152, SWIFT J1753.5--0127 and GX 339-4 with the Swift X-ray Telescope. The bandpass of the X-ray Telescope has access to emission from both components of the accretion flow:…

High Energy Astrophysical Phenomena · Physics 2015-06-23 M. Kalamkar , M. T. Reynolds , M. van der Klis , D. Altamirano , J. M. Miller

Large optical modulations during 2018 outburst of MAXI J1820+070 reveal evolution of warped accretion disc through X-ray state change

The black-hole X-ray transient MAXI J1820+07 (=ASSASN-18ey) discovered in March 2018 was one of the optically brightest ever seen, which has resulted in very detailed optical outburst light-curves being obtained. We combine them here with…

High Energy Astrophysical Phenomena · Physics 2021-11-03 Jessymol K. Thomas , Philip A. Charles , David A. H. Buckley , Marissa M. Kotze , Jean-Pierre Lasota , Stephen B. Potter , James F. Steiner , John A. Paice