Alexander F. Zakharov

Constraints onRngravity from precession of orbits of S2-like stars

We study some possible observational signatures of

Different types of Fe Kα lines from radiating annuli near black holes

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Constraints on

gravity at Galactic scales and how these signatures could be used for constraining this type of

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f(R)

gravity from precession of orbits of S2-like stars: a case of a bulk distribution of mass

gravity. For that purpose, we performed two-body simulations in

Constraining the range of Yukawa gravity interaction from S2 star orbits II: bounds on graviton mass

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Constraining the range of Yukawa gravity interaction from S2 star orbits III: improvement expectations for graviton mass bounds

gravity potential and analyzed the obtained trajectories of S2-like stars around Galactic center, as well as resulting parameter space of

ASTROMETRY AND ASTROPHYSICS WITH THE SPACE TELESCOPE RADIOASTRON

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Contribution of microlensing to X-ray variability of distant QSOs

gravity potential. Here, we discuss the constraints on the

GRAVITATIONAL MICROLENSING AND DARK MATTER IN OUR GALAXY: 10 YEARS LATER

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