J 2023

On photons and matter inversion spheres from complex super-spinars accretion structures

PUGLIESE, Daniela a Zdeněk STUCHLÍK

Základní údaje

Originální název

On photons and matter inversion spheres from complex super-spinars accretion structures

Autoři

PUGLIESE, Daniela (380 Itálie, domácí) a Zdeněk STUCHLÍK (203 Česká republika, domácí)

Vydání

European Physical Journal C, New York (USA), SPRINGER, 2023, 1434-6044

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Kód RIV

RIV/47813059:19630/23:A0000283

Organizační jednotka

Fyzikální ústav v Opavě

DOI

http://dx.doi.org/10.1140/epjc/s10052-023-11305-4

UT WoS

000957576400003

Klíčová slova anglicky

black-hole accreation;3-D simulations;naked singularity;inner edge;disks;evolution;tori;instablities;stress;motion

Štítky

RIV24, UF

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 16. 1. 2024 14:00, Mgr. Pavlína Jalůvková

Anotace

V originále

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 balance of the hydrodynamic and centrifugal forces and also effects of super-spinars repulsive gravity. We investigate the accretion flows, constituted by particles and photons, from toroids orbiting a central Kerr super-spinar. As results of our analysis, in both accretion and jet flows, properties characterizing these geometries, that constitute possible strong observational signatures or these attractors, are highlighted. We found that the flow is characterized by closed surfaces, defining inversion coronas (spherical shell), with null the particles flow toroidal velocity (u0 = 0) embedding the central singularity. We proved that this region distinguishes proto-jets and accretion driven flows, co-rotating and counter-rotating flows. Therefore in both cases the flow carries information about the accretion structures around the central attractor, demonstrating that inversion points can constitute an observational aspect capable of distinguishing the super-spinars.
Zobrazeno: 14. 11. 2024 08:31