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Hairy black holes and null circular geodesics

被引：89
|
作者：
Hod, Shahar [1 ,2 ]
机构：
[1] Ruppin Acad Ctr, IL-40250 Emek Hefer, Israel
[2] Hadassah Inst, IL-91010 Jerusalem, Israel
来源：
PHYSICAL REVIEW D | 2011年 / 84卷 / 12期
关键词：
NO-HAIR; BARYON NUMBER; STABILITY ANALYSIS; EVENT HORIZONS; NONMEASURABILITY; NONEXISTENCE; INSTABILITY; SOLITONS; THEOREM; FIELD;
D O I：
10.1103/PhysRevD.84.124030
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Einstein-matter theories in which hairy black-hole configurations have been found are studied. We prove that the nontrivial behavior of the hair must extend beyond the null circular orbit (the photonsphere) of the corresponding spacetime. We further conjecture that the region above the photonsphere contains at least 50% of the total hair's mass. We support this conjecture with analytical and numerical results.
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页数：5
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