Energetics of Buchdahl stars and the magnetic Penrose process
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F24%3AA0000352" target="_blank" >RIV/47813059:19630/24:A0000352 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1140/epjc/s10052-024-13419-9" target="_blank" >https://link.springer.com/article/10.1140/epjc/s10052-024-13419-9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-024-13419-9" target="_blank" >10.1140/epjc/s10052-024-13419-9</a>
Alternative languages
Result language
angličtina
Original language name
Energetics of Buchdahl stars and the magnetic Penrose process
Original language description
Buchdahl star is the most compact object without an event horizon and is an excellent candidate for a black hole mimicker. Unlike black holes, rotating Buchdahl star can beover-extremal with respect to the black hole, sustaining a larger spin. We show that it can also develop an ergosphere above the threshold spin beta > 1/root 2, which allows extractionof its rotational energy. Electromagnetic field around Buch-dahl star is also expected to differ from that of black hole in both strength and topology. In this paper, we explore the energetics of Buchdahl star focusing on the magnetic Pen-rose process in the two magnetic field configurations, i.e.,uniform and dipole. Below the threshold spin, Buchdahl staris expected to be quiet, while above the threshold it can be much more efficient than the black hole if a dipolar magnetic field is developed on its surface
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
<a href="/en/project/GA23-07043S" target="_blank" >GA23-07043S: Black Hole Magnetosphere</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>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
European Physical Journal C
ISSN
1434-6044
e-ISSN
1434-6052
Volume of the periodical
84
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
„1015-1“-„1015-12“
UT code for WoS article
001330673600001
EID of the result in the Scopus database
2-s2.0-85206218185