Publications (72)
ESO 243-49 HLX-1: scaling of X-ray spectral properties and black hole mass determination
Lev Titarchuk, Elena Seifina
Implication of the observable spectral cutoff energy evolution in XTE J1550-564
Lev Titarchuk, Nikolai Shaposhnikov
An upscattering spectral formation model for the prompt emission of Gamma-Ray Bursts
Lev Titarchuk, Ruben Farinelli, Filippo Frontera +1
Electron-Positron pairs creation close to a black hole horizon. Red-shifted annihilation line in the emergent X-ray spectra of a black hole, part I
Philippe Laurent, Lev Titarchuk
Observational Signatures of Black Holes: Spectral and Temporal Features of XTE J1550-564
Lev Titarchuk, Chris Shrader
Timing Spectroscopy of Quasi-Periodic Oscillations in the Low-Mass X-ray Neutron Star Binaries
Lev Titarchuk, Vladimir Osherovich, Sergey Kuznetsov
Do the Spectra of Soft X-ray Transients Reveal Bulk Motion Inflow Phenomenon?
Konstantin Borozdin, Mikhail Revnivtsev, Sergey Trudolyubov +2
Correlations between X-ray Spectral Characteristics and Quasi-Periodic Oscillations in Sco X-1
Charles F. Bradshaw, Lev Titarchuk, Sergey Kuznetsov
Why is it Difficult to Detect a Millisecond Pulsar in Neutron Star X-ray Binaries?
Lev Titarchuk, Wei Cui, Kent Wood
X-Ray Spectra of The High-Mass X-RAY Binary 4U~1700-37 using BeppoSAX, Suzaku and RXTE Observations
Elena Seifina, Lev Titarchuk, Nikolai Shaposhnikov
Discovery of Red-Skewed K_alpha iron line in Cyg X-2 with Suzaku
Nikolai Shaposhnikov, Lev Titarchuk, Philippe Laurent
How To Distinguish Neutron Star and Black Hole X-ray Binaries? Spectral index and Quasi-Periodic Oscillation Frequency Correlation
Lev Titarchuk, Nickolai Shaposhnikov
Spectral state evolution of 4U~1820-30: the stability of the spectral index of Comptonization tail
Lev Titarchuk, Elena Seifina, Filippo Frontera
The Bursting Behavior of 4U 1728-34: Parameters of a Neutron Star and Geometry of a NS-disk system
Nickolai Shaposhnikov, Lev Titarchuk, Frank Haberl
Swift J164449.3+573451 and Swift J2058.4+0516: Black hole mass estimates for tidal disruption event sources
Elena Seifina, Lev Titarchuk, Enrico Virgill
Stability of the photon indices in Z-source GX 340+0 for spectral states
Elena Seifina, Lev Titarchuk, Filippo Frontera
BeppoSAX Observations of the Power and Energy Spectral Evolution in the Black Hole Candidate XTE J1650-500
Enrico Montanari, Lev Titarchuk, Filippo Frontera
Spectral Index and Quasi-Periodic Oscillation Frequency Correlation in Black Hole (BH) Sources: Observational Evidence of Two Phases and Phase Transition in BHs
Lev Titarchuk, Ralph Fiorito
On the Nature of the Compact Object in SS~433. Observational Evidence of X-ray Photon Index Saturation
Elena Seifina, Lev Titarchuk
Determination of Black Hole Masses in Galactic Black Hole Binaries using Scaling of Spectral and Variability Characteristics
Nickolai Shaposhnikov, Lev Titarchuk
The Global-Normal Disk Oscillations and the Persistent Low Frequency QPO in X-ray Binaries
Lev Titarchuk, Vladimir Osherovich
Mechanisms for High-frequency QPOs in Neutron Star and Black Hole Binaries
Lev Titarchuk, Iosif Lapidus, Alex Muslimov
delta-invariant for Quasi-periodic Oscillations and Physical Parameters of 4U 0614+09 binary
Lev Titarchuk, Vladimir Osherovich
The Observed Galactic Annihilation Line. Possible Signature of the Cluster for Accreting Small Mass Black Holes
Lev Titarchuk, Pascal Chardonnet
Outflows Near An Accreting Black Hole: Ionization and Temperature Structure
J. Martin Laming, Lev Titarchuk
Timing and Spectral Properties of X-ray Emission from the Converging Flows onto Black hole: Monte-Carlo Simulations
Philippe Laurent, Lev Titarchuk
BEPPOSAX and RXTE spectral study of the low-mass X-ray binary 4u~1705-44. Spectral hardening during the banana branch
Elena Seifina, Lev Titarchuk, Chris Shrader +1
Effects of Resonance in Quasiperiodic Oscillators of Neutron Star Binaries
Lev Titarchuk
Energy dependent ~100 μs time lags as observational evidence of Comptonization effects in the neutron star plasma environment
Maurizio Falanga, Lev Titarchuk
On the nature of the variability power decay towards soft spectral states in X-ray binaries. Case study in Cyg X-1
Lev Titarchuk, Nikolai Shaposhnikov
Scaling of the photon index vs mass accretion rate correlation and estimate of black hole mass in M101 ULX-1
Lev Titarchuk, Elena Seifina
Downscattering due to Wind Outflows in Compact X-ray Sources: Theory and Interpretation
Lev Titarchuk, Chris Shrader
Black Hole Mass of the Ultraluminous X-ray source M82 X-1
Gulab C. Dewangan, Lev Titarchuk, Richard E. Griffiths
Comptonization signatures in the prompt emission of Gamma Ray Bursts
Filippo Frontera, Lorenzo Amati, Ruben Farinelli +4
Classification of Power Density Spectrum Features and Estimation of the Delta-Invariant Value for the Z Source GX 340+0
Lev Titarchuk, Vladimir Osherovich
On the Constancy of the Photon Index of X-ray spectra of 4U~1728-34 through all spectral states
Elena Seifina, Lev Titarchuk
Spectra of the Expansion Stage of X-Ray Bursts
Nickolai Shaposhnikov, Lev Titarchuk
Interpretation of 35 Hz QPO in the Atoll Source 4U 1702-42 as a Low Branch of the Keplerian Oscillations Under the Influence of the Coriolis Force
Vladimir Osherovich, Lev Titarchuk
Correlations of Power-law Spectral and QPO Features In Black Hole Candidate Sources
Ralph Fiorito, Lev Titarchuk
Broad redshifted line as a signature of outflow
Lev Titarchuk, Demos Kazanas, Peter A. Becker
Discovery of photon index saturation in the black hole binary GRS 1915+105
Lev Titarchuk, Elena Seifina
BL Lacertae: X-ray spectral evolution and a black-hole mass estimate
Lev Titarchuk, Elena Seifina
Temporal and Spectral Properties of Comptonized Radiation
Demos Kazanas, Xin-Min Hua, Lev Titarchuk
A Method for Black Hole Mass Determination in Accretion Powered X-Ray Sources
Chris Shrader, Lev Titarchuk
On the Non-relativistic Origin of Red-skewed Iron Lines in CV, Neutron Star and Black Hole Sources
Lev Titarchuk, Philippe Laurent, Nikolai Shaposhnikov
Correlations between X-ray Spectral and Timing Characteristics in Cyg X-2
Lev Titarchuk, Sergey Kuznetsov, Nikolai Shaposhnikov
Can Any "Invariants" Be Revealed in Quasi-periodic Phenomena Observed From Sco X-1?
Sergey Kuznetsov, Lev Titarchuk
Scaling of X-ray spectral properties of a black hole in the Seyfert 1 galaxy NGC~7469
Elena Seifina, Lev Titarchuk, Lyubov Ugolkova
Rayleigh - Taylor Gravity Waves and Quasiperiodic Oscillation Phenomenon in X-ray Binaries
Lev Titarchuk
Comprehensive Analysis of RXTE Data from Cyg X-1: Spectral Index-Quasi-Periodic Oscillation Frequency-Luminosity Correlations
Nickolai Shaposhnikov, Lev Titarchuk
The Extended Power Law as Intrinsic Signature For a Black Hole
Lev Titarchuk, Thomas Zannias
The High-Energy Spectra of Accreting Black Holes: Observational Evidence for Bulk-Motion Infall
Chris Shrader, Lev Titarchuk
Is M82 X-1 Really An Intermediate-Mass Black Hole? X-ray Spectral and Timing Evidence
Ralph Fiorito, Lev Titarchuk
Three Type I X-ray bursts from Cyg X-2: Application of Analytical Models for Neutron Star Mass and Radius Determination
Lev Titarchuk, Nickolai Shaposhnikov
GX~3+1: the stability of spectral index as a function of mass accretion rate
Elena Seifina, Lev Titarchuk
Correlations between kHz QPO and Low Frequency Features Attributed to Radial Oscillations and Diffusive Propagation in the Viscous Boundary Layer Around a Neutron Star
Lev Titarchuk, Vladimir Osherovich
On the nature of the flux variability during an expansion stage of a type I X-ray burst: Constraints on Neutron Star Parameters for 4U 1820-30
Nickolai Shaposhnikov, Lev Titarchuk
X-ray spectral and timing behavior of Scorpius X-1. Spectral hardening during the flaring branch
Lev Titarchuk, Elena Seifina, Chris Shrader
Kilohertz QPOs in Neutron Star Binaries modeled as Keplerian Oscillations in a Rotating Frame of Reference
Vladimir Osherovich, Lev Titarchuk
Black hole mass determination in the X-ray binary 4U 1630--47: Scaling of spectral and variability characteristics
Elena Seifina, Lev Titarchuk, Nikolai Shaposhnikov
Spectral Index as a Function of Mass Accretion Rate in Black Hole Sources. Monte-Carlo Simulations and an Analytical Description
Philippe Laurent, Lev Titarchuk
Determination of Black Hole Mass in Cyg X-1 by Scaling of Spectral Index-QPO Frequency Correlation
Nickolai Shaposhnikov, Lev Titarchuk
Phase Difference and Coherence as Diagnistics of Accreting Compact Sources
Xin-Min Hua, Demosthenes Kazanas, Lev Titarchuk
On the Low and High Frequency Correlation in Quasi-Periodic Oscillations Among White Dwarfs, Neutron Star and Black Hole Binaries
Lev Titarchuk, Kent Wood
NGC 4051: Black hole mass and photon index-mass accretion rate correlation
Elena Seifina, Alexandre Chekhtman, Lev Titarchuk
New Evidence for a Black Hole in the Compact Binary Cygnus X-3
Chris Shrader, Lev Titarchuk, Nikolai Shaposhnikov
Effects of Downscattering on the Continuum and Line Spectra in Powerful Wind Environment. Monte Carlo Simulations, Analytical Results and Data Analysis
Philippe Laurent, Lev Titarchuk
Mass Determination of Black Holes in LMC X-1 and Nova Muscae 1991 from their High-Energy Spectra
Chris Shrader, Lev Titarchuk
Power spectra of black holes and neutron stars as a probe of hydrodynamical structure of the source. Diffusion theory and its application to Cyg X-1 and Cyg X-2 X-ray observations
Lev Titarchuk, Nikolai Shaposhnikov, Vadim Arefiev
Power-law Tails from Dynamical Comptonization in Converging Flows
Roberto Turolla, Silvia Zane, Lev Titarchuk
Disk Diffusion Propagation Model for the Outburst of XTE J1118+480
Kent S. Wood, Lev Titarchuk, Paul S. Ray +3
Rotational splitting effect in neutron star QPOs
Lev Titarchuk, Alex Muslimov