Strong deflection lensing by charged black holes in scalar-tensor gravity

被引：24
|
作者：
Eiroa, Ernesto F. [1 ,2 ]
Sendra, Carlos M. [1 ,2 ]
机构：
[1] CONICET UBA, Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina
[2] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina
来源：
EUROPEAN PHYSICAL JOURNAL C | 2014年 / 74卷 / 11期
关键词：
GALACTIC-CENTER; FIELD; PARAMETERS; COSMOLOGY;
D O I：
10.1140/epjc/s10052-014-3171-1
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We examine a class of charged black holes in scalar-tensor gravity as gravitational lenses. We find the deflection angle in the strong deflection limit, from which we obtain the positions and the magnifications of the relativistic images. We compare our results with those corresponding to the Reissner-Norstrom spacetime and we analyze the observational aspects in the case of the Galactic supermassive black hole.
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页数：8
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