Particle collisions and optical effects in the mining Kerr-Newman spacetimes

@article{29865,
   author = {Stuchlík, Zdeněk and Blaschke, Martin and Schee, Jan},
   article_number = {10},
   doi = {http://dx.doi.org/10.1103/PhysRevD.96.104050},
   keywords = {nonzero cosmological constant; rotating black-hole; equatorial photon motion; naked singularities; radial motion; charged-particles; field; shell; dimensions; hierarchy},
   language = {eng},
   issn = {2470-0010},
   journal = {Physical Review D},
   title = {Particle collisions and optical effects in the mining Kerr-Newman spacetimes},
   url = {https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.104050},
   volume = {96},
   year = {2017}
}

TY  - JOUR
ID  - 29865
AU  - Stuchlík, Zdeněk - Blaschke, Martin - Schee, Jan
PY  - 2017
TI  - Particle collisions and optical effects in the mining Kerr-Newman spacetimes
JF  - Physical Review D
VL  - 96
IS  - 10
SP  - „104050-1“-„104050-31“
EP  - „104050-1“-„104050-31“
SN  - 24700010
KW  - nonzero cosmological constant
KW  - rotating black-hole
KW  - equatorial photon motion
KW  - naked singularities
KW  - radial motion
KW  - charged-particles
KW  - field
KW  - shell
KW  - dimensions
KW  - hierarchy
UR  - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.104050
L2  - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.104050
N2  - We study ultrahigh-energy particle collisions and optical effects in the extraordinary class of mining braneworld Kerr-Newman (KN) naked singularity spacetimes, predicting extremely high efficiency of Keplerian accretion, and compare the results to those related to the other classes of the KN naked singularity and black hole spacetimes. We demonstrate that in the mining KN spacetimes the ultrahigh center-of-mass energy occurs for collisions of particles following the extremely-low-energy stable circular geodesics of the "mining regime," colliding with large family of incoming particles, e.g., those infalling from the marginally stable counter-rotating circular geodesics. This is qualitatively different situation in comparison to the standard KN naked singularity or black hole spacetimes where the collisional ultrahigh center-of-mass energy can be obtained only in the near-extreme spacetimes. We also show that observers following the stable circular geodesics of the mining regime can register extremely blue-shifted radiation incoming from the Universe, and see strongly deformed sky due to highly relativistic motion along such stable orbits. The strongly blue-shifted radiation could be thus a significant source of energy for such orbiting observers.
ER  - 

STUCHLÍK, Zdeněk, Martin BLASCHKE a Jan SCHEE. Particle collisions and optical effects in the mining Kerr-Newman spacetimes. \textit{Physical Review D}. 2017, roč.~96, č.~10, s.~„104050-1“-„104050-31“, 31 s. ISSN~2470-0010. Dostupné z: https://dx.doi.org/10.1103/PhysRevD.96.104050.