Nature of inner light rings
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10495415" target="_blank" >RIV/00216208:11320/24:10495415 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pfRuTxU2tO" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pfRuTxU2tO</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.110.084026" target="_blank" >10.1103/PhysRevD.110.084026</a>
Alternative languages
Result language
angličtina
Original language name
Nature of inner light rings
Original language description
Nonsingular horizonless ultracompact objects provide a simple resolution to the black holes singularity problem. It has been shown that, if these objects are compact enough to exhibit the presence of the light ring required to mimic the phenomenology of general relativity black holes, they must have at least one additional light ring. The stability of the inner light ring has been proven under the assumptions of Einstein equations and the validity of the null energy condition. Since this can have important repercussions on the instability of a horizonless ultracompact object and the existence of the latter requires some modified gravitational dynamics and/or exotic matter, it is desirable to obtain a model-independent proof of the stability of the additional light ring. In this paper, we prove the stability of the inner light ring without any assumption on the dynamics of the theory, while assuming that the outer light ring has the same properties as the Kerr light ring. Given the stringent observational constraints on the geometry at the outer light ring scale, our result now rests solely on geometric considerations and applies to any theory of gravity with any matter content that cannot be ruled out by observations.
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
—
OECD FORD branch
10300 - Physical sciences
Result continuities
Project
<a href="/en/project/GA23-07457S" target="_blank" >GA23-07457S: Hidden Symmetries and Black Hole Chemistry</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
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
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
110
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
084026
UT code for WoS article
001339043300011
EID of the result in the Scopus database
2-s2.0-85208373856