Neutrino trapping in extremely compact objects described by the internal Schwarzschild-(anti-)de Sitter spacetimes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F12%3A%230004567" target="_blank" >RIV/47813059:19240/12:#0004567 - isvavai.cz</a>
Result on the web
<a href="http://link.springer.com/content/pdf/10.1007%2Fs10714-012-1346-3" target="_blank" >http://link.springer.com/content/pdf/10.1007%2Fs10714-012-1346-3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10714-012-1346-3" target="_blank" >10.1007/s10714-012-1346-3</a>

Result language
angličtina
Original language name
Neutrino trapping in extremely compact objects described by the internal Schwarzschild-(anti-)de Sitter spacetimes
Original language description
Extremely compact stars (ECS) (having radius R < 3GM/c 2) contain captured null geodesics. Certain part of neutrinos produced in their interior will be trapped, influencing thus their neutrino luminosity and thermal evolution. The trapping effect has been previously investigated for the internal Schwarzschild spacetimes with the uniform distribution of energy density. Here, we extend our earlier study considering the influence of the cosmological constant ? on the trapping phenomena. Our model for the interior of ECS is based on the internal Schwarzschild-(anti-)de Sitter (S(a)dS) spacetimes with uniform distribution of energy density matched to the external vacuum S(a)dS spacetime with the same cosmological constant. Assuming uniform and isotropic distribution of local neutrino emissivity we determine behavior of the trapping coefficients, i. e., "global" one representing influence on the neutrino luminosity and "local" one representing influence on the cooling process. We demonstrate
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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