Zobrazeno 1 - 10
of 336
pro vyhledávání: '"Frolov, Valeri"'
Autor:
Frolov, Valeri P.
We study spinoptics equations in the Schwarzschild spacetime. We demonstrate that using the explicit and hidden symmetries of this metric one can explicitly solve the equations for complex null tetrad associated with null rays representing photon's a
Externí odkaz:
http://arxiv.org/abs/2410.19413
Autor:
Frolov, Valeri P., Koek, Alex
In this paper we consider a rotating black hole with electric and magnetic monopole charges that moves in a static homogeneous electromagnetic field. We assume that both the charges and the fields are weak, so that they have no effect on the spacetim
Externí odkaz:
http://arxiv.org/abs/2407.08104
Autor:
Frolov, Valeri P., Shoom, Andrey A.
In this paper we discuss propagation of the weak high-frequency gravitational waves in a curved spacetime background. We develop a so-called spinoptics approximation which takes into account interaction of the spin of the field with the curvature of
Externí odkaz:
http://arxiv.org/abs/2406.17905
Autor:
Frolov, Valeri P.
In this paper we study propagation of the high frequency electromagnetic waves in a curved spacetime. We discuss a so call spinoptics approach which generalizes a well known geometric optics approximation and allows one to take into account spin-depe
Externí odkaz:
http://arxiv.org/abs/2405.01777
Autor:
Frolov, Valeri P., Koek, Alex
In this paper we consider the motion of a rotating black hole through a static, homogeneous, massless scalar field. In the general case, a constant vector of the field gradient can be timelike, spacelike or null. We consider and compare all of these
Externí odkaz:
http://arxiv.org/abs/2403.01044
Autor:
Frolov, Valeri P.
In the present paper, we consider a rotating black hole moving in a static homogeneous electromagnetic field. We assume that the field is weak and neglect its backreaction on the geometry, so that the metric at far distance from the black hole is pra
Externí odkaz:
http://arxiv.org/abs/2401.15527
Autor:
Frolov, Valeri
In the present paper, we consider a rotating black hole moving in a homogeneous massless scalar field. We assume that the field is weak and neglect its backreaction, so that the metric at far distance from the black hole is practically flat. In this
Externí odkaz:
http://arxiv.org/abs/2312.07801
Autor:
Frolov, Valeri P., Soto, Jose Pinedo
In the present paper, we discuss a nonlocal modification of the Kerr metric. Our starting point is the Kerr-Schild form of the Kerr metric $g_{\mu\nu}=\eta_{\mu\nu}+\Phi l_{\mu}l_{\mu}$. Using Newman's approach we identify a shear free null congruenc
Externí odkaz:
http://arxiv.org/abs/2308.00114
Autor:
Baker, Noah P., Frolov, Valeri P.
In this paper, the orbits of a charged particle near the event horizon of a magnetized black hole are investigated. For a static black hole of mass $M$ immersed in a homogeneous magnetic field $B$, the dimensionless parameter $b=eBGM/ (mc^4)$ control
Externí odkaz:
http://arxiv.org/abs/2305.12591
In the present paper we discuss properties of a model of a ring wormhole, recently proposed by Gibbons and Volkov. Such a wormhole connects two flat spacetimes which are glued through discs of the radius $a$ bounded by the string with negative angle
Externí odkaz:
http://arxiv.org/abs/2305.03887