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- W4379538652 abstract "A non-extreme dilatonic charged (by two ``color electric'' charges) black hole solution is considered in a 4-dimensional gravity model including two scalar (dilaton) fields and two Abelian vector fields. Scalar and vector fields interact through exponential terms which contain two dilatonic coupling vectors. The solution is governed by a dimensionless parameter $a$ $(0 < a < 2)$, which is a certain function of dilatonic coupling vectors. The paper presents solutions for timelike and null circular geodesics which may play an important role in different astrophysical problems, including quasinormal modes of various test fields in the eikonal approximation. For $a = 1/2,1, 3/2,2 $ the innermost stable circular orbit (ISCO) radii are presented and analysed." @default.
- W4379538652 created "2023-06-07" @default.
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- W4379538652 date "2023-06-02" @default.
- W4379538652 modified "2023-09-26" @default.
- W4379538652 title "Circular geodesics in the field of double-charged dilatonic black holes" @default.
- W4379538652 doi "https://doi.org/10.48550/arxiv.2306.01927" @default.
- W4379538652 hasPublicationYear "2023" @default.
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