Avoiding Bias in Measurements of Fundamental Constants from High Resolution Quasar Spectra
Publication Date
2022-04-27Journal Title
Universe
ISSN
2218-1997
Publisher
MDPI AG
Volume
8
Issue
5
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Webb, J. K., Lee, C., & Milaković, D. (2022). Avoiding Bias in Measurements of Fundamental Constants from High Resolution Quasar Spectra. Universe, 8 (5) https://doi.org/10.3390/universe8050266
Abstract
<jats:p>Recent advances in spectroscopic instrumentation and calibration methods dramatically improve the quality of quasar spectra. Supercomputer calculations show that, at high spectral resolution, procedures used in some previous analyses of spacetime variations of fundamental constants are likely to generate spurious measurements, biased systematically towards a null result. Developments in analysis methods are also summarised and a prescription given for the analysis of new and forthcoming data.</jats:p>
Keywords
cosmological parameters, quasar absorption systems, methods: observational, techniques: spectroscopic
Identifiers
External DOI: https://doi.org/10.3390/universe8050266
This record's URL: https://www.repository.cam.ac.uk/handle/1810/336604
Rights
Licence:
https://creativecommons.org/licenses/by/4.0/
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