Possible influence of a cosmic repulsion on large-scale jets: Geometric viewpoint
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F24%3AA0000370" target="_blank" >RIV/47813059:19630/24:A0000370 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2214404824000375?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2214404824000375?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jheap.2024.05.007" target="_blank" >10.1016/j.jheap.2024.05.007</a>
Alternative languages
Result language
angličtina
Original language name
Possible influence of a cosmic repulsion on large-scale jets: Geometric viewpoint
Original language description
Cosmic repulsion represented by a small positive value of the cosmological constant changes significantly properties of central gravitational fields at large distances, leading to existence of a static (or turnaround) radius where gravitational attraction of a center is just balanced by cosmic repulsion. Analyzing behavior of radial timelike geodesics in the Schwarzschild-de Sitter spacetime near its static radius we show that the particles with specific energy close to unity have tendency to slow down and cluster just below the static radius, forming clumps which, subsequently, start to expand uniformly due to cosmic repulsion. For central masses of (10 6 -10 11 ) M circle dot and current value of the cosmological constant 1.1 x 10 -52 m -2 , this phenomenon takes place at distances of tens to hundreds of kiloparsecs from the center, being comparable with distances in which huge radio-lobes from some active galaxies were observed.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of High Energy Astrophysics
ISSN
2214-4048
e-ISSN
2214-4056
Volume of the periodical
42
Issue of the periodical within the volume
June 2024
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
4
Pages from-to
205-208
UT code for WoS article
001258337200001
EID of the result in the Scopus database
2-s2.0-85193596531