Energy extraction and particle acceleration around a rotating black hole in quintessence

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F16%3AN0000016" target="_blank" >RIV/47813059:19240/16:N0000016 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs10509-016-2850-9" target="_blank" >https://link.springer.com/article/10.1007%2Fs10509-016-2850-9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10509-016-2850-9" target="_blank" >10.1007/s10509-016-2850-9</a>

Result language
angličtina
Original language name
Energy extraction and particle acceleration around a rotating black hole in quintessence
Original language description
We study motion and collision of particles in the gravitational field of rotating black hole immersed in quintessential dark energy characterized with the quintessential parameter $omega_q$ is an element of $(-1;-1/3)$ governing the equation of state of the dark energy, and the dimensionless quintessential field parameter $c over tilde$. We focus on the acceleration of particles due to collisional processes and show how the center of mass energy depends on the quintessential field parameter $c over tilde$. We also make comparison of the obtained results to the collisional energetics of quintessential static black holes demonstrating the crucial role of the rotation parameter a in the particle acceleration. Finally we study the dependence of the maximal value of the efficiency of energy extraction through Penrose process for rotating black hole with quintessential field parameter $c over tilde$. It is found that quintessence field decreases the energy extraction efficiency through Penrose process and when the parameter $c over tilde$ vanishes one can get the standard value of the efficiency coefficient for the Kerr black hole as $eta similar to 21 %$.
Czech name
—
Czech description
—

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
—

Project
<a href="/en/project/GB14-37086G" target="_blank" >GB14-37086G: Albert Einstein Center for Gravitation and Astrophysics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)