Valery Zhdanov

Valery Zhdanov

Head of astrophysics department of Astronomical observatory

Institute for Theoretical Physics of the Academy of Sciences of Ukraine, Kyiv (Ukraine)

Senior researcher/ Head of scientific division
Center of Metrology and Standards of the USSS State Standards committee (Ukraine)

Senior/Leading researcher
Taras Shevchenko National University of Kyiv, Kyiv (Ukraine)

Head of Astrophysics department
Taras Shevchenko National University of Kyiv, Kyiv (Ukraine)


Taras Shevchenko National University of Kyiv, Kyiv (Ukraine)

Ph.D of Physical and Mathematical Sciences
Taras Shevchenko National University of Kiev, Kyiv (Ukraine)

Doctor of Physics and Mathematics
Taras Shevchenko National University of Kiev, Kyiv (Ukraine)

Professor of Astrophysics and Radioastronomy
Taras Shevchenko National University of Kiev, Kyiv (Ukraine)



Winner of the State prize of Ukraine in Science and Technology (2014)

General Relativity, Relativistic Astrophysics and Cosmology

Research Fields:

Previous and Current Research

  1.  Two-body problem in relativistic dynamics and General Relativity
  2.  Relativistic shock waves in anomalous media
  3.  Relativistic reference frames
  4.  Quasars and active galactic nuclei
  5.  Gravitational microlensing in galactic and extragalactic systems
  6.  Scalar field models in relativistic cosmology

We worked out qualitative and approximate methods in various fields of general relativity and relativistic dynamics, such as the problem of motion of the relativistic dynamics taking into account the retardation of interactions, theory of relativistic shock waves in case of a general equation of state (including anomalous media), theory of wave propagation in curved space-times, analytical and statistical methods in gravitational microlensing.

Current activity deals with models of relativistic astrophysical objects and highly relativistic astrophysical phenomena. One of the key directions concerns the observational manifestations of the dark matter and dark energy, which together make up about 95 percent of the average mass density in the Universe.

Future Projects and Goals

Search for the observational manifestations of the dark matter and dark energy

Methodological and Technical Expertise

Gravitational Microlensing, the scalar field models of the Dark Energy, relativistic processes in active galactic nuclei, the Dark Matter.

Selected Publications

V.I. Zhdanov, O.S. Stashko. Static spherically symmetric configurations with N nonlinear scalar fields: Global and asymptotic properties. Physical Review D . –2020. –V.101, Iss.6. –id. 064064, 11pp.

O. S. Stashko, V. I. Zhdanov. Spherically symmetric configurations of General Relativity in presence of scalar fields: separation of circular orbits. General Relativity and Gravitation. – 2018. – Ή50. – id 105. 10pp.

V. I. Zhdanov, S. S. Dylda. Scalar field versus hydrodynamic models in homogeneous isotropic cosmology. Phys. Rev. D – 2018. – V.97. – id 124033. 9pp.

Fedorova, E.; Sliusar, V. M.; Zhdanov, V. I.; Alexandrov, A. N.; Del Popolo, A.; Surdej, J.
Gravitational microlensing as a probe for dark matter clumps. MNRAS. – 2016. – V.457, Is 4. – P.4147-4159.

Fedorova , E.; Vasylenko, A.; Hnatyk, B. I.; Zhdanov, V. I. The peculiar megamaser AGN NGC 1194: Comparison with the warped disk candidates NGC 1068 and NGC 4258. Astronomische Nachrichten. – 2016. – V.337, Issue 1-2. –P.96-100.

Vasylenko, A. A.; Zhdanov, V. I.; Fedorova, E. V. X-ray spectral parameters for a sample of 95 active galactic nuclei. Astrophysics and Space Science, – 2015. –V.360, id.37. – 16 pp.

L.L. Jenkovszky, V.I. Zhdanov, E.J. Stukalo. Cosmological model with variable vacuum pressure
Phys. Rev. D. – 2014. –V. 90, Issue 2. id. 023529. –8 pp.

A.A.Vasylenko, E.V. Fedorova, B.I. Hnatyk, V.I. Zhdanov. Evidence for a binary black hole in active nucleus of NGC 1194 galaxy? Kinematics and Physics of Celestial Bodies. – 2015.–V. 31, issue 1. –P.13-18.

Alexandrov, A. N.; Zhdanov, V. I. Asymptotic expansions and amplification of a gravitational lens near a fold caustic. MNRAS. – 2011. –V.417. – P. 541-554.

Ivashchenko G., Zhdanov V. I., Tugay A. V. Correlation Function of Quasars in Real and Redshift Space from SDSS DR7. MNRAS. – 2010. –V.409. –P. 1691-1704.

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