Zobrazeno 1 - 10
of 3 124
pro vyhledávání: '"Stuchlík A"'
Publikováno v:
Journal of High Energy Astrophysics, Volume 44, pp. 500-530, November 2024
The motion of charged particles under the Lorentz force in the magnetosphere of neutron stars, represented by a dipole field in the Schwarzschild spacetime, can be determined by an effective potential, whose local extrema govern circular orbits both
Externí odkaz:
http://arxiv.org/abs/2412.04996
Unlike the perturbations of massless fields, the asymptotic tails of massive fields exhibit oscillations and decay slowly, following a power-law envelope. In this work, considering various scenarios admitting (either fundamental or effective) massive
Externí odkaz:
http://arxiv.org/abs/2411.09014
Autor:
Britzen, S., Kovačević, A. B., Zajaček, M., Popović, L. Č., Pashchenko, I. N., Kun, E., Pánis, R., Jaron, F., Plšek, T., Tursunov, A., Stuchlík, Z.
The BL Lac Object PKS 1717+177 has been identified as potential neutrino-emitting AGN in the point source stacking analysis of IceCube data. We explore peculiarities in the morphology and kinematics of the jet and examine multi-wavelength light curve
Externí odkaz:
http://arxiv.org/abs/2410.18184
Autor:
Charbulák, Daniel, Stuchlík, Zdeněk
The construction of local escape cones and their complementary cones, related to the locally non-rotating frames (LNRFs) orbiting superspinars with the external field described by the Kerr-de Sitter (KdS) naked singularity (NS) spacetimes, is describ
Externí odkaz:
http://arxiv.org/abs/2410.17659
Autor:
Pugliese, D., Stuchlik, Z.
We consider a counter--rotating torus orbiting a central Kerr black hole (\textbf{BH}) with dimensionless spin $a$, and its accretion flow into the \textbf{BH}, in an agglomerate of an outer counter--rotating torus and an inner co--rotating torus. Th
Externí odkaz:
http://arxiv.org/abs/2410.03360
We have studied neutral and charged massive particles dynamics in Ellis spacetime in the presence of the external scalar field. Focusing on the circular motion of massive particles, the impact of an external scalar field on the Innermost Stable Circu
Externí odkaz:
http://arxiv.org/abs/2409.14110
Autor:
Pugliese, D., Stuchlık, Z.
We examine the shadow cast by a Kerr black hole, focusing on constraints on photons corresponding to different shadow boundaries. The photons are related to different orbital ranges and impact parameter values, creating a map of the shadow boundaries
Externí odkaz:
http://arxiv.org/abs/2405.13834
Autor:
Pugliese, D., Stuchlík, Z.
Publikováno v:
Physical Review D, Volume 106, Issue 12, article id.124034 (2022)
Comparing different dark matter (DM) models, we explore the DM influence on black hole (BH) accretion disk physics, considering corotating and counterrotating thick accretion tori orbiting a central spinning BH. Our results identify accretion onto a
Externí odkaz:
http://arxiv.org/abs/2403.11885
It is well known that supermassive black holes in the centers of galaxies are capable of accelerating charged particles to very high energies. In many cases, the particle acceleration by black holes occurs electromagnetically through an electric fiel
Externí odkaz:
http://arxiv.org/abs/2402.13797
Autor:
Pugliese, D., Stuchlik, Z.
Publikováno v:
Eur. Phys. J. C 83, 242 (2023)
Our analysis focus on the dragging effects on the accretion flows and jet emission in Kerr super-spinars. These attractors are characterized by peculiar accretion structures as double tori, or special dragged tori in the ergoregion, produced by the b
Externí odkaz:
http://arxiv.org/abs/2402.11998