Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Jantzen, Robert"'
Publikováno v:
International Journal of Geometric Methods in Modern Physics (2023) 2350087
The class of Petrov type I curvature tensors is further divided into those for which the span of the set of distinct principal null directions has dimension four (maximally spanning type I) or dimension three (nonmaximally spanning type I). Explicit
Externí odkaz:
http://arxiv.org/abs/2111.01283
Timelike geodesics on a hyperplane orthogonal to the symmetry axis of the G\"odel spacetime appear to be elliptic-like if standard coordinates naturally adapted to the cylindrical symmetry are used. The orbit can then be suitably described through an
Externí odkaz:
http://arxiv.org/abs/2002.11432
Publikováno v:
Phys. Rev. D 100, 084051 (2019)
We study elliptic-like geodesic motion on hyperplanes orthogonal to the cylindrical symmetry axes of the Godel spacetime by using an eccentricity-semi-latus rectum parametrization which is familiar from the Newtonian description of a two-body system.
Externí odkaz:
http://arxiv.org/abs/1905.04917
Publikováno v:
Phys. Rev. D 99, 064041 (2019)
The Wigner rotations arising from the combination of boosts along two different directions are rederived from a relative boost point of view and applied to gyroscope spin precession along timelike geodesics in a Kerr spacetime, clarifying the geometr
Externí odkaz:
http://arxiv.org/abs/1807.10085
Position determination of photon emitters and associated strong field parallax effects are investigated using relativistic optics when the photon orbits are confined to the equatorial plane of the Schwarzschild spacetime. We assume the emitter is at
Externí odkaz:
http://arxiv.org/abs/1707.00955
Publikováno v:
Phys. Rev. D 95, 124022 (2017)
The precession angular velocity of a gyroscope moving along a general geodesic in the Kerr spacetime is analyzed using the geometric properties of the spacetime. Natural frames along the gyroscope world line are explicitly constructed by boosting fra
Externí odkaz:
http://arxiv.org/abs/1703.09525
Akademický článek
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Publikováno v:
Phys. Rev. D 94, 124002 (2016)
The precession of a test gyroscope along unbound equatorial plane geodesic orbits around a Kerr black hole is analyzed with respect to a static reference frame whose axes point towards the "fixed stars." The accumulated precession angle after a compl
Externí odkaz:
http://arxiv.org/abs/1610.06513
Publikováno v:
Phys. Rev. D 94, 064066 (2016)
The precession of a test gyroscope along stable bound equatorial plane orbits around a Kerr black hole is analyzed and the precession angular velocity of the gyro's parallel transported spin vector and the increment in precession angle after one orbi
Externí odkaz:
http://arxiv.org/abs/1607.08427
Publikováno v:
IJGMMP 12, 1550070 (2015)
A general framework is developed to investigate the properties of useful choices of stationary spacelike slicings of stationary spacetimes whose congruences of timelike orthogonal trajectories are interpreted as the world lines of an associated famil
Externí odkaz:
http://arxiv.org/abs/1509.04875