Stringent limit on space-time variation of fine-structure constant using high-resolution of quasar spectra
T. D. Le
Abstract
We have obtained a new limit on the space-time variation of the fine-structure constant (α=e24πε0ℏc) using the observations of Mg II line in quasar J110325-264515 spectra with redshift zabs=1.8389. The obtained parameter is Δα/α=(−0.155±0.728)×10−6. It was derived from the comparison between the quasar J110325-264515 spectra and the laboratory sample spectra. The obtained result appears as a new highly sensitive probe of the cosmological variability of the fine-structure constant. From the relative spectra of the Mg II, we found the most stringent constraint up today on Δα/α comparing to the previously published results.
Topics & Concepts
QuasarLimit (mathematics)Constant (computer programming)Variation (astronomy)Fine-structure constantSpectral lineComputational physicsPhysicsResolution (logic)Statistical physicsAstrophysicsOpticsAnalytical Chemistry (journal)MathematicsChemistryQuantum mechanicsMathematical analysisComputer scienceChromatographyArtificial intelligenceGalaxyElectronProgramming languageCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsGalaxies: Formation, Evolution, Phenomena