Results 81 to 90 of about 9,886 (203)

Impact of quantum-corrected parameter on spinning particle motion around a black hole

European Physical Journal C: Particles and Fields
The motion of spinning particles around a quantum-corrected black hole is examined in this paper. We investigate the dynamics of spinning test particles by using the Mathisson–Papapetrou–Dixon equations, the Tulczyjew spin-supplementary condition, and ...
Asalkhon Alimova, Farruh Atamurotov, Ahmadjon Abdujabbarov, G. Mustafa, Phongpichit Channuie   +4 more
doaj   +1 more source

Multi-frequency Polarization Studies of AGN Jets

EPJ Web of Conferences, 2013
Throughout most of the history of radio interferometry studies of Active Galactic Nuclei (AGN) using VLBI, attempts to extract physically meaningful information from VLBI observations have been dominated by visibility-based approaches to analysis, such ...
Gabuzda Denise C.
doaj   +1 more source

Coordinate Confusion in Conformal Cosmology

, 2007
A straight-forward interpretation of standard Friedmann-Lemaitre-Robertson-Walker (FLRW) cosmologies is that objects move apart due to the expansion of space, and that sufficiently distant galaxies must be receding at velocities exceeding the speed of ...
G. F. Lewis, Hubble, J. B. James, L. A. Barnes, M. J. Francis   +4 more
core   +1 more source

Spin effects on motion of charged particles around magnetized black holes in conformally coupled scalar fields

Nuclear Physics B
We investigate the dynamics of charged spinning test particles in the spacetime of a magnetized Bocharova-Bronnikov-Melnikov-Bekenstein black hole (BH), an extremal solution of the Einstein-Maxwell-conformally coupled scalar field equations.
Shokhzod Jumaniyozov, Javlon Rayimbaev, Yunus Turaev, Munisbek Akhmedov, Aybek Seytov, Jamshid Khasanov   +5 more
doaj   +1 more source

The Relativistic Beaming Model and Superluminal Motions [PDF]

International Astronomical Union Colloquium, 1997
In this paper, we consider a compilation of 55 objects with known superluminal motions (SM), and whose flux density (X-ray, optical, radio), core dominance parameter (R), superluminal velocity, and radio Doppler factor (δR) are known. Our study shows that SM is consistent with the beaming model, and the relationis reasonable.
J. H. Fan, G.Z. Xie, Y.H. Zhang, Y.P. Qin   +3 more
openaire   +1 more source

Dynamics of spinning particles around a charged black-bounce spacetime

European Physical Journal C: Particles and Fields
We investigate the dynamics of neutral spinning test particles in the charged black-bounce spacetime described by the Reissner–Nordström–Simpson–Visser metric, which interpolates between a Reissner–Nordström black hole and a traversable wormhole via the ...
Shokhzod Jumaniyozov, Javlon Rayimbaev, Yunus Turaev   +2 more
doaj   +1 more source

Innermost stable circular orbit of spinning particle in charged spinning black hole background

, 2017
In this paper we investigate the innermost stable circular orbit (ISCO) for a classical spinning test particle in the background of Kerr-Newman black hole.
Guo, Wen-Di, Liu, Yu-Xiao, Sui, Tao-Tao, Wei, Shao-Wen, Zhang, Yu-Peng   +4 more
core   +1 more source

Subluminal OPERA Neutrinos

, 2011
The OPERA collaboration has announced to have observed superluminal neutrinos with a mean energy 17.5 GeV, but afterward the superluminal interpretation of the OPERA results has been refuted theoretically by Cherenkov-like radiation and pion decay.
Einstein A., Einstein A., Frank P., Frank P., ICHIRO ODA, Ignatowsky W. V., Ignatowsky W. V., Jackson J. D., Weinberg S.   +8 more
core   +1 more source

B2 1144+35B, a giant low power radio galaxy with superluminal motion [PDF]

, 2007
G. Giovannini, M. Giroletti, G. B. Taylor   +2 more
openalex   +3 more sources

Description of the Motion of Objects with Sub- and Superluminal Speeds [PDF]

, 2020
Janusz Wolny, Radosław Strzałka
openalex   +1 more source