Energetics and optical properties of 6-dimensional rotating black hole in pure Gauss–Bonnet gravity

The European Physical Journal C

Farruh Atamurotov¹  Bobomurat Ahmedov²  Ahmadjon Abdujabbarov²  Zdeněk Stuchlík³  Naresh Dadhich⁴ 

[1] Institute of Nuclear Physics, Ulughbek, 100214, Tashkent, Uzbekistan;Inha University in Tashkent, 100170, Tashkent, Uzbekistan;Institute of Nuclear Physics, Ulughbek, 100214, Tashkent, Uzbekistan;Ulugh Beg Astronomical Institute, Astronomicheskaya 33, 100052, Tashkent, Uzbekistan;Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezrucovo nam. 13, Opava, Czech Republic;Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, 411 007, Pune, India;Centre for Theoretical Physics, Jamia Millia Islamia, 110025, New Delhi, India;

关键词: Black Hole;    Circular Orbit;    Bonnet;    Einstein Gravity;    Rotation Parameter;   

DOI  :  10.1140/epjc/s10052-015-3604-5

来源: Springer

【 摘 要 】

We study physical processes around a rotating black hole in pure Gauss–Bonnet (GB) gravity. In pure GB gravity, the gravitational potential has a slower fall-off as compared to the corresponding Einstein potential in the same dimension. It is therefore expected that the energetics of a pure GB black hole would be weaker, and our analysis bears out that the efficiency of energy extraction by the Penroseprocess is increased to 25.8 % and the particle acceleration is increased to 55.28 %; the optical shadow of the black hole is decreased. These are in principle distinguishing observable features of a pure GB black hole.

【 授权许可】

CC BY