STUCHLÍK, Zdeněk, Martin BLASCHKE and Jan SCHEE. Particle collisions and optical effects in the mining Kerr-Newman spacetimes. Physical Review D. 2017, vol. 96, No 10, p. „104050-1“-„104050-31“, 31 pp. ISSN 2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.96.104050.
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Basic information
Original name Particle collisions and optical effects in the mining Kerr-Newman spacetimes
Authors STUCHLÍK, Zdeněk (203 Czech Republic, guarantor, belonging to the institution), Martin BLASCHKE (203 Czech Republic, belonging to the institution) and Jan SCHEE (203 Czech Republic, belonging to the institution).
Edition Physical Review D, 2017, 2470-0010.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW Physical Review D
RIV identification code RIV/47813059:19240/17:A0000006
Organization Filozoficko-přírodovědecká fakulta – Slezská univerzita v Opavě – Repository
Doi http://dx.doi.org/10.1103/PhysRevD.96.104050
UT WoS 000416315600012
Keywords in English nonzero cosmological constant; rotating black-hole; equatorial photon motion; naked singularities; radial motion; charged-particles; field; shell; dimensions; hierarchy
Tags CTP, GB14-37086G, SGS-14-2016, ÚF
Tags International impact, Reviewed
Links GB14-37086G, research and development project.
Changed by Changed by: Jan Hladík, učo 1305. Changed: 5/4/2018 15:46.
Abstract
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.
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