J 2023

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

PUGLIESE, Daniela and Zdeněk STUCHLÍK

Basic information

Original name

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

Authors

PUGLIESE, Daniela (380 Italy, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution)

Edition

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

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

RIV identification code

RIV/47813059:19630/23:A0000283

Organization unit

Institute of physics in Opava

DOI

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

UT WoS

000957576400003

Keywords in English

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

Tags

RIV24, UF

Tags

International impact, Reviewed
Změněno: 16/1/2024 14:00, Mgr. Pavlína Jalůvková

Abstract

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.
Displayed: 28/12/2024 07:00