Acceleration of string loops in the Schwarzschild-de Sitter geometry

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F12%3A%230004520" target="_blank" >RIV/47813059:19240/12:#0004520 - isvavai.cz</a>

Result on the web

<a href="http://arxiv.org/pdf/1206.5658v1.pdf" target="_blank" >http://arxiv.org/pdf/1206.5658v1.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.85.065022" target="_blank" >10.1103/PhysRevD.85.065022</a>

Result language

angličtina

Original language name

Acceleration of string loops in the Schwarzschild-de Sitter geometry

Original language description

We study acceleration of current-carrying string loops governed by the presence of an outer tension barrier and an inner angular momentum barrier in the field of Schwarzschild-de Sitter black holes. We restrict attention to the axisymmetric motion of string loops with energy high enough, when the string loop can overcome the gravitational attraction and escape to infinity. We demonstrate that string loops can be scattered near the black hole horizon, and the energy of string oscillations can be efficiently converted to the energy of their linear motion. Such a transmutation effect can potentially represent acceleration of jets in active galactic nuclei and microquasars. We give the conditions limiting energy available for conversion onto the jetlike motion. Surprisingly, we are able to show that string loops starting from rest can be accelerated up to velocities v=c even in the field of Schwarzschild black holes, if their angular momentum parameter is low enough. Such loops could serve

Czech name

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Czech description

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Type

J_x - 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

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2012

Confidentiality

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

Name of the periodical

Physical Review D - Particles, Fields, Gravitation and Cosmology

ISSN

1550-7998

e-ISSN

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Volume of the periodical

85

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

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UT code for WoS article

000301973600008

EID of the result in the Scopus database

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