| Issue |
A&A
Volume 398, Number 2, February I 2003
|
|
|---|---|---|
| Page(s) | 429 - 433 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20021494 | |
| Published online | 21 January 2003 | |
A hypothetical cosmological test: Trigonometry on large scales
School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, UK e-mail: jl28@st-andrews.ac.uk
Corresponding author: jol@roe.ac.uk
Received:
8
August
2002
Accepted:
11
October
2002
I discuss the constraints that could be placed on 
and 
if
it were possible to measure the redshift of an object at cosmological
distance as observed by a second distant object. This hypothetical
cosmological test has several attractive features. By a suitable
choice of objects (in terms of distance from us and angular separation
on the sky) a single measurement can constrain almost any given linear
combination of and . These constraints do not depend on, or
require marginalisation over, any other cosmological parameters (such
as the Hubble constant) or any early universe physics. In principle,
the test makes no assumptions about the objects involved and hence it
is entirely independent of their physics and any possible evolution.
Key words: cosmological parameters
© ESO, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.