Dynamical particles in spatially flat FLRW space-times

被引：5

作者：

Cotaescu, Ion I. ^{[1
]}

机构：

[1] West Univ Timisoara, V Parvan Ave 4, Timisoara 300223, Romania

来源：

EUROPEAN PHYSICAL JOURNAL C | 2022年 / 82卷 / 01期

关键词：

GRAVITATIONAL WAVES; GENERAL RELATIVITY; DISTANCE; VELOCITY;

D O I：

10.1140/epjc/s10052-022-10023-7

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Metrics of dynamical point particles embedded in spatially flat FLRW space-times are derived as isotropic solutions of the Einstein equations with the energy-momentum tensor of a perfect fluid. These particles are produced by central singularities of the fluid density but without changing the pressure of the asymptotic FLRW space-times. It is shown that each particle gets a dynamical photon sphere before a critical instant when two dynamical apparent horizons arise just on the photon sphere evolving then as C-curves. The angular radius of the shadow associated to the photon sphere is derived and compared with the known results.

引用

页数：9

共 27 条

[1]

Ashtekar A, 2005, ADV THEOR MATH PHYS, V9, P1

[2] GRAVITATIONAL WAVES IN GENERAL RELATIVITY [J].

BONDI, H .

NATURE, 1960, 186 (4724) :535-535

[3] GRAVITATIONAL WAVES IN GENERAL RELATIVITY .7. WAVES FROM AXI-SYMMETRIC ISOLATED SYSTEMS [J].

BONDI, H ;

VANDERBU.MG ;

METZNER, AWK .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1962, 269 (1336) :21-&

[4] SPHERICALLY SYMMETRICAL MODELS IN GENERAL RELATIVITY [J].

BONDI, H .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1947, 107 (5-6) :410-425

[5] Marginally trapped tubes and dynamical horizons [J].

Booth, I ;

Brits, L ;

Gonzalez, JA ;

Van Den Broeck, C .

CLASSICAL AND QUANTUM GRAVITY, 2006, 23 (02) :413-439

[6] Influence of global cosmological expansion on local dynamics and kinematics [J].

Carrera, Matteo ;

Giulini, Domenico .

REVIEWS OF MODERN PHYSICS, 2010, 82 (01) :169-208

[7] Generalization of McVittie's model for an inhomogeneity in a cosmological spacetime [J].

Carrera, Matteo ;

Giulini, Domenico .

PHYSICAL REVIEW D, 2010, 81 (04)

[8] Light from Schwarzschild black holes in de Sitter expanding universe [J].

Cotaescu, Ion I. .

EUROPEAN PHYSICAL JOURNAL C, 2021, 81 (01)

[9] Making sense of the bizarre behavior of horizons in the McVittie spacetime [J].

Faraoni, Valerio ;

Moreno, Andres F. Zambrano ;

Nandra, Roshina .

PHYSICAL REVIEW D, 2012, 85 (08)

[10]

Frolov V., 2011, INTRO BLACK HOLE PHY, DOI [10.1093/acprof:oso/9780199692293.001.0001, DOI 10.1093/ACPROF:OSO/9780199692293.001.0001]

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