2020/08/04 by C. L. Ahmed Rizwan, C L Ahmed Rizwan, A Naveena Kumara +5
Physics and Astronomy · #Anisotropy #Astrophysical Phenomena and Observations #Black hole (networking) #Charged black hole #Einstein field equations #Event horizon #Horizon #Particle (ecology) #Pulsars and Gravitational Waves Research #Relativity and Gravitational Theory #Rotating black hole #Spacetime #White hole #gr-qc
paper · pdf · doi:10.1088/1361-6382/abe2d9
published as Classical and Quantum Gravity, 2021 · 22 pages, 7 figures
arxiv created 2020/08/04 · openalex created_date 2020/08/10 · openalex publication_date 2021/02/03 · arxiv updated 2021/03/12 · openalex updated_date 2026/08/05
Abstract Recently, a generalised solution for Einstein equations for a rotating black hole, surrounded by matter field was proposed, which is the Kerr–Newman spacetime with an anisotropic matter [ Phys. Rev. D . 101 064067]. Due to the negative radial pressure of the anisotropic matter, the solution possesses an additional hair along with the conventional mass, charge and spin. In this article we show that, this new class of black holes can act as a cosmic particle accelerator during the collision of two generic particles in its gravitational field in the ergo-region. The centre of mass energy of the particles shoots to an arbitrary high value in the vicinity of the event horizon for the extremal black hole. The physical conditions for the collision to take place are obtained by studying the horizon structure and circular particle motion. The results obtained are interesting from an astrophysical perspective.