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Charged fluids encircling compact objects: force representations and conformal geometries

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F20%3AA0000006" target="_blank" >RIV/47813059:19630/20:A0000006 - isvavai.cz</a>

  • Result on the web

    <a href="https://iopscience.iop.org/article/10.1088/1361-6382/abbe70" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6382/abbe70</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1088/1361-6382/abbe70" target="_blank" >10.1088/1361-6382/abbe70</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Charged fluids encircling compact objects: force representations and conformal geometries

  • Original language description

    Charged fluids rotating around compact objects can form unique equilibrium structures when ambient large-scale electromagnetic fields combine with strong gravity. Equatorial as well as off-equatorial toroidal structures are among such figures of equilibrium with a direct relevance for astrophysics. To investigate their geometrical shapes and physical properties in the near-horizon regime, where effects of general relativity play a significant role, we commonly employ a scheme based on the energy-momentum conservation written in a standard representation. Here, we develop its interesting alternatives in terms of two covariant force representations, both based on a hypersurface projection of the energy-momentum conservation. In a proper hypersurface, space-like forces can be defined, following from a decomposition of the fluid four-acceleration. Each of the representations provides us with an insight into properties of the fluid flow, being well reflected in related conformal hypersurface geometries; we find behaviour of centrifugal forces directly related to geodesics of these conformal hypersurfaces and their embedding diagrams. We also reveal correspondence between the charged fluid flow world-lines from an ordinary spacetime, and world-lines determined by a charged test particles equation of motion in a conformal spacetime.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10308 - Astronomy (including astrophysics,space science)

Result continuities

  • Project

    <a href="/en/project/GA19-03950S" target="_blank" >GA19-03950S: Testing strong gravity via black holes</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Classical and Quantum Gravity

  • ISSN

    0264-9381

  • e-ISSN

    1361-6382

  • Volume of the periodical

    37

  • Issue of the periodical within the volume

    24

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    21

  • Pages from-to

    „245007-1“-„245007-21“

  • UT code for WoS article

    000590715200001

  • EID of the result in the Scopus database

    2-s2.0-85096826361