Author

Ivan Zh. Stefanov

Observed names: I Zh Stefanov, I. Stefanov, I. Zh. Stefanov, IVAN Z. STEFANOV, IVAN ZH. STEFANOV, IVAN. ZH. STEFANOV, Ivan Stefanov, Ivan Z Stefanov, Ivan Zh Stefanov, Ivan Zhivkov Stefanov, STEFANOV IVAN Z., Stefanov, Ivan, Stefanov, Ivan Z., Stefanov, Ivan Zh.

Institution: Technical University of Sofia

Observed institutions: University of Patras, Bulgarian Academy of Sciences, Technical University of Sofia, Institute of Astronomy and National Astronomical Observatory, Institute of Mechanics, Sofia University "St. Kliment Ohridski", University of Tübingen

ORCID: 0000-0001-8541-252X

Observed ORCID: 0000-0001-8541-252X

OpenAlex ID: A5037140166

Connection between Black-Hole Quasinormal Modes and Lensing in the Strong Deflection Limit

2010 · Ivan Zh. Stefanov, Stoytcho S. Yazadjiev, et al. · Physical Review Letters · 217

Phases of 4d Scalar–tensor Black Holes Coupled to Born–infeld Nonlinear Electrodynamics

2008 · IVAN ZH. STEFANOV, STOYTCHO S. YAZADJIEV, et al. · Modern Physics Letters A · 104

Gravitational lensing by phantom black holes

2013 · Galin N. Gyulchev, Ivan Zh. Stefanov · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 69

Scalar-tensor black holes coupled to Born-Infeld nonlinear electrodynamics

2007 · Ivan Zh. Stefanov, Stoytcho S. Yazadjiev, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 67

Quasinormal modes, bifurcations, and nonuniqueness of charged scalar-tensor black holes

2010 · Daniela D. Doneva, Stoytcho S. Yazadjiev, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 65

Scalar–tensor Black Holes Coupled to Euler–heisenberg Nonlinear Electrodynamics

2007 · IVAN ZH. STEFANOV, STOYTCHO S. YAZADJIEV, et al. · Modern Physics Letters A · 55

Density distribution function of a self-gravitating isothermal compressible turbulent fluid in the context of molecular clouds ensembles

2017 · Sava Donkov, Ivan Z Stefanov · Monthly Notices of the Royal Astronomical Society · 22

Charged anti–de Sitter scalar-tensor black holes and their thermodynamic phase structure

2010 · Daniela D. Doneva, Stoytcho S. Yazadjiev, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 18

Confronting models for the high-frequency QPOs with Lense–Thirring precession

2014 · Ivan Zh. Stefanov · Monthly Notices of the Royal Astronomical Society · 14

Density profile of a self-gravitating polytropic turbulent fluid in the context of ensembles of molecular clouds

2021 · S Donkov, I Zh Stefanov, et al. · Monthly Notices of the Royal Astronomical Society · 9

Density distribution function of a self-gravitating isothermal compressible turbulent fluid in the context of molecular clouds ensembles – II. Contribution of the turbulent term and the potential of the outer shells

2019 · Sava Donkov, Ivan Stefanov · Monthly Notices of the Royal Astronomical Society · 9

Solitons and black holes in a generalized Skyrme model with dilaton-quarkonium field

2011 · Daniela D. Doneva, Ivan Zh. Stefanov, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 9

On the selection of models for the high-frequency quasiperiodic oscillations of black holes: The mass problem

2017 · Stefanov, Ivan Zh., Tasheva, Radostina P. · arXiv (Cornell University) · 8

Quasiperiodic oscillations and Tomimatsu-Sato δ=2 space-time

2013 · Ivan Zh. Stefanov, Galin G. Gyulchev, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 8

The microquasar XTЕ J1807-294 – Mass evaluation by means of the relativistic precession model

2019 · Radostina P. Tasheva, Ivan Zh. Stefanov · AIP conference proceedings · 7

Autonomous navigation and speed control for line following robot

2018 · Dimitar Nikolov, Georgi Zafirov, et al. · International Scientific Conference Electronics (ET) · 7

Time evolution of the radial perturbations and linear stability of solitons and black holes in a generalized Skyrme model

2011 · Daniela D. Doneva, Kostas D. Kokkotas, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 7

Stability of charged scalar–tensor black holes coupled to Born–Infeld nonlinear electrodynamics

2008 · Ivan Zh Stefanov, Stoytcho S Yazadjiev, et al. · Classical and Quantum Gravity · 7

Born–infeld Black Holes Coupled to a Massive Scalar Field

2011 · DANIELA A. GEORGIEVA, IVAN ZH. STEFANOV, et al. · International Journal of Modern Physics D · 6

Geodesic model complience with the frequencies of the observed X-ray quasi-period oscillations of XTE J1807-294

2023 · Tasheva, Radostina, Stefanov, Ivan · arXiv (Cornell University) · 4

Application of the Invasion Percolation Model to Water-Gas Flows in Artificial Soils with Plants

2009 · N. Pesheva, I. Stefanov, et al. · Transport in Porous Media · 4

Density profile of a self-gravitating polytropic turbulent fluid in a rotating disc near to the cloud core

2023 · S Donkov, I Zh Stefanov, et al. · Monthly Notices of the Royal Astronomical Society · 3

Density distribution function of a self-gravitating isothermal turbulent fluid in the context of molecular cloud ensembles – III. Virial analysis

2022 · S Donkov, I Zh Stefanov, et al. · Monthly Notices of the Royal Astronomical Society · 3

Thermodynamics of Fluid Elements in the Context of Turbulent Isothermal Self-Gravitating Molecular Clouds

2025 · Sava Donkov, Ivan Zh. Stefanov, et al. · Universe · 2

Thermodynamics of Scalar-tensor AdS Black Holes Coupled to Nonlinear Electrodynamics

2010 · D. Doneva, S. Yazadjiev, et al. · AIP conference proceedings · 2

Works count: 54

Citation count: 732

H-index: 9

I10-index: 9