Open AccessOn the cosmological distance and redshift between any two objects
Author(s) -
Liske J.
Publication year - 2000
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2000.03874.x
Subject(s) - physics , redshift , sky , astrophysics , cosmology , angular diameter , theoretical physics , classical mechanics , astronomy , galaxy , stars
We discuss the problem of how to calculate the distance between two cosmological objects given their redshifts and angular separation on the sky. Although of a fundamental nature, this problem and its solution seem to lack a detailed description in the literature. We present a new variant of its solution and quantitatively assess the most commonly used approximation.