Shadow of rotating Horava-Lifshitz black hole

被引:89
作者
Atamurotov, Farruh [1 ]
Abdujabbarov, Ahmadjon [1 ,2 ]
Ahmedov, Bobomurat [1 ,2 ,3 ]
机构
[1] Inst Nucl Phys, Tashkent 100214, Uzbekistan
[2] Ulugh Begh Astron Inst, Tashkent 100052, Uzbekistan
[3] Abdus Salam Int Ctr Theoret Phys, I-34151 Trieste, Italy
关键词
Photon motion; Shadow of black hole; Horava-Lifshitz spacetime; FIELD; SYSTEM;
D O I
10.1007/s10509-013-1548-5
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The shadow of rotating HoA (TM) ava-Lifshitz black hole has been studied and it was shown that in addition to the specific angular momentum a, parameters of HoA (TM) ava-Lifshitz spacetime essentially deform the shape of the black hole shadow. For a given value of the black hole spin parameter a, the presence of a parameter I > (W) and KS parameter omega enlarges the shadow and reduces its deformation with respect to the one in the Kerr spacetime. We have found a dependence of radius of the shadow R (s) and distortion parameter delta (s) from parameter I > (W) and KS parameter omega both. Optical features of the rotating HoA (TM) ava-Lifshitz black hole solutions are treated as emphasizing the rotation of the polarization vector along null congruences. A comparison of the obtained theoretical results on polarization angle with the observational data on Faraday rotation measurements provides the upper limit for the delta parameter as delta a parts per thousand currency sign2.1a <...10(-3).
引用
收藏
页码:179 / 188
页数:10
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