Light from Schwarzschild black holes in de Sitter expanding universe

被引：11

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 | 2021年 / 81卷 / 01期

基金：

英国科研创新办公室;

关键词：

RELATIVITY; DISTANCE; VELOCITY; SHADOW; FRAMES; FIELD;

D O I：

10.1140/epjc/s10052-020-08822-x

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：

A new method is applied for deriving simultaneously the redshift and shadow of a Schwarzschild black hole moving freely in the de Sitter expanding universe as recorded by a remote co-moving observer. This method is mainly algebraic, focusing on the transformation of the conserved quantities under the de Sitter isometry relating the black hole co-moving frame to observer's one. Hereby one extracts the general expressions of the redshifts and shadows of the black holes having peculiar velocities but their expressions are too extended to be written down here. Therefore, only some particular cases and intuitive expansions are presented while the complete results are given in an algebraic code (Cotescu in Maple code BH01, https://physics.uvt.ro/similar to cota/CCFT/codes, 2020).

引用

页数：11

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