A test of unification towards the radio source PKS1413+135

We point out that existing astrophysical measurements of combinations of the fine-structure constant α, the proton-to-electron mass ratio μ and the proton gyromagnetic ratio gp towards the radio source PKS1413+135 can be used to individually constrain each of these fundamental couplings. While the a...

Full description

Saved in:
Bibliographic Details
Published in:Physics letters. B 2013-07, Vol.724 (1-3), p.1-4
Main Authors: Ferreira, M.C., Julião, M.D., Martins, C.J.A.P., Monteiro, A.M.R.V.L.
Format: Article
Language:English
Subjects:
Alpha rays
Astrophysical observations
Atomic clocks
Cosmology
Couplings
Dipoles
Elementary particles
Fundamental couplings
Gyromagnetic ratio
Mass ratios
PKS1413+135
Radio
Unification scenarios
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We point out that existing astrophysical measurements of combinations of the fine-structure constant α, the proton-to-electron mass ratio μ and the proton gyromagnetic ratio gp towards the radio source PKS1413+135 can be used to individually constrain each of these fundamental couplings. While the accuracy of the available measurements is not yet sufficient to test the spatial dipole scenario, our analysis serves as a proof of concept as new observational facilities will soon allow significantly more robust tests. Moreover, these measurements can also be used to obtain constraints on certain classes of unification scenarios, and we compare the constraints obtained for PKS1413+135 with those previously obtained from local atomic clock measurements.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2013.05.055