Equatorial timelike circular orbits around generic ultracompact objects
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.105.064026
Abstract: For a stationary, axisymmetric, asymptotically flat, ultra-compact [i.e. containing light-rings (LRs)] object, with a Z2 north-south symmetry fixing an equatorial plane, we establish that the structure of timelike circular orbits (TCOs) in the vicinity of… read more here.
Keywords: tcos; black holes; timelike circular; equatorial timelike ... See more keywords
On the curvatures of timelike circular surfaces in Lorentz-Minkowski space
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DOI: 10.2298/fil2404423l
Abstract: In this paper, using the classical methods of differential geometry, wedefine invariants of timelike circular surfaces in Lorentz-Minkowski space R3 1, called curvature functions, and show kinematic meaning of these invariants. Then we discuss the… read more here.
Keywords: circular surfaces; surfaces lorentz; minkowski space; timelike circular ... See more keywords
Timelike Circular Surfaces and Singularities in Minkowski 3-Space
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DOI: 10.3390/sym14091914
Abstract: The present paper is focused on time-like circular surfaces and singularities in Minkowski 3-space. The timelike circular surface with a constant radius could be swept out by moving a Lorentzian circle with its center while… read more here.
Keywords: timelike circular; surfaces singularities; singularities minkowski; minkowski space ... See more keywords