73 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- C. Bambi26 · h 50
- J. Rayimbaev2 profiles18 · h 23
- A. Abdujabbarov11 · h 41
- G. Mustafa4 profiles10 · h 35
- B. Ahmedov2 profiles9 · h 42
- Honghui Liu9 · h 13
- Farruh Atamurotov8 · h 37
- M. Koussour3 profiles7 · h 24
- Swarnim Shashank7 · h 7
- Askar B. Abdikamalov2 profiles6 · h 20
- H. Chaudhary6 · h 15
- U. Debnath6 · h 30
- National University of UzbekistanUZ92 papers
- Fudan UniversityCN26 papers
- Ulugh Beg Astronomical InstituteUZ21 papers
- Tashkent Institute of Irrigation and Agricultural Mechanization EngineersUZ15 papers
- Tashkent State Technical University named after Islam KarimovUZ15 papers
- University of TübingenDE12 papers
- Zhejiang Normal UniversityCN12 papers
- Inha University in TashkentUZ9 papers
- L. N. Gumilyov Eurasian National UniversityKZ9 papers
- Harbin Institute of TechnologyCN8 papers
- Westminster International University in TashkentUZ8 papers
- University of Hassan II CasablancaMA7 papers
15 papers · 1 filter
Searching for Isolated Black Hole Candidates within 15 pc of the Solar System in Gaia DR3
Abdurakhmon Nosirov, Cosimo Bambi, Leda Gao +4
Theoretical models predict that the Galaxy hosts - black holes formed from the complete gravitational collapse of heavy stars and that most of these black holes are iso…
Assessing systematic uncertainties from spectral re-analysis of Cyg X-1 with different coronal geometries
Abdurakhmon Nosirov, Jiachen Jiang, Cosimo Bambi +1
In this work, we carry out a new spectral reanalysis of NuSTAR and Suzaku observations of the disk reflection spectra in the stellar-mass black hole X-ray binary Cyg~X-1. We compar…
Spin Constraints on 4U 1630-47 via combined Continuum Fitting and Reflection methods: a comparative study using Frequentist and Bayesian statistics
Debtroy Das, Honghui Liu, Zuobin Zhang +5
We present a comprehensive Bayesian spectral analysis of the black hole X-ray binary 4U 1630-47 during its 2022 outburst, using simultaneous NICER and NuSTAR observations. Using th…
Stellar-Mass Black Holes
Cosimo Bambi
Stellar-mass black holes ( ) are the natural product of the evolution of heavy stars ( ). I…
Possible Coronal Geometry in the Hard and Soft State of Black Hole X-ray Binaries from MONK Simulations
Ningyue Fan, Cosimo Bambi, James F. Steiner +1
Understanding the coronal geometry in different states of black hole X-ray binaries is important for more accurate modeling of the system. However, it is difficult to distinguish d…
Measuring black hole spins with x-ray reflection spectroscopy: A GRMHD outlook
Swarnim Shashank, Askar B. Abdikamalov, Honghui Liu +4
X-ray reflection spectroscopy has evolved as one of the leading methods to measure black hole spins. However, the question is whether its measurements are subjected to systematic b…
Dimming GRS 1915+105 observed with NICER and Insight--HXMT
M. Zhou, V. Grinberg, A. Santangelo +6
The black hole X-ray binary GRS 1915+105 was bright for 26 years since its discovery and is well-known for its disk instabilities, quasi-periodic oscillations, and disk wind signat…
Impact of the returning radiation on X-ray reflection spectroscopy measurements: the case of Galactic black holes
Kexin Huang, Honghui Liu, Cosimo Bambi +2
The effect of the returning radiation has long been ignored in the analysis of the reflection spectra of Galactic black holes and active galactic nuclei and only recently has been…
NICER Spectral and Timing Analysis of 4U 163047 and its Heartbeat State
Ningyue Fan, James F. Steiner, Cosimo Bambi +3
We present a spectral and timing analysis of NICER observations of the black hole X-ray binary 4U 1630-47 from 2018 to 2024. We find relativistic reflection features in the hard an…
About the accuracy of the relxill/relxill_nk models in view of the next generation of X-ray missions
Honghui Liu, Askar B. Abdikamalov, Temurbek Mirzaev +4
X-ray reflection spectroscopy is a powerful tool to study the strong gravity region of black holes. The next generation of astrophysical X-ray missions promises to provide unpreced…
Impact of reflection Comptonization on X-ray reflection spectroscopy: the case of EXO 1846-031
Songcheng Li, Honghui Liu, Cosimo Bambi +2
Within the disk-corona model, it is natural to expect that a fraction of reflection photons from the disk are Compton scattered by the hot corona (reflection Comptonization), even…
Testing General Relativity with NuSTAR data of Galactic Black Holes : II
Ashutosh Tripathi, Swarnim Shashank, Gitika Mall +1
General relativity predicts the spacetime metric around an astrophysical black hole to be described by the Kerr solution, which is a massive rotating black hole without any residua…
Towards more accurate synthetic reflection spectra: improving the calculations of returning radiation
Temurbek Mirzaev, Shafqat Riaz, Askar B. Abdikamalov +6
We present a new model to calculate reflection spectra of thin accretion disks in Kerr spacetimes. Our model includes the effect of returning radiation, which is the radiation that…
Measuring Black Hole Spins through X-ray Reflection Spectroscopy and the Relativistic Precession Model: the case of XTE J1859+226
Gitika Mall, Honghui Liu, Cosimo Bambi +2
The development of techniques to measure accurately black hole spins is crucial to study the physics and astrophysics of these objects. X-ray reflection spectroscopy is currently t…
Evolution of QPOs in GX 339-4 and EXO 1846-031 with Insight-HXMT and NICER
Zuobin Zhang, Honghui Liu, Divya Rawat +6
We conduct a spectral and timing analysis of GX 339-4 and EXO 1846-031 with the aim of studying the evolution of Type-C QPOs with spectral parameters. The high cadence data from In…