New Limit on Space-Time Variations in the Proton-to-Electron Mass Ratio from Analysis of Quasar J110325-264515 Spectra
oleh: T. D. Le
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2020-03-01 |
Deskripsi
Astrophysical tests of current values for dimensionless constants known on Earth, such as the fine-structure constant, <inline-formula> <math display="inline"> <semantics> <mi>α</mi> </semantics> </math> </inline-formula>, and proton-to-electron mass ratio, <inline-formula> <math display="inline"> <semantics> <mrow> <mi>μ</mi> <mo>=</mo> <msub> <mi>m</mi> <mi>p</mi> </msub> <mo>/</mo> <msub> <mi>m</mi> <mi>e</mi> </msub> </mrow> </semantics> </math> </inline-formula>, are communicated using data from high-resolution quasar spectra in different regions or epochs of the universe. The symmetry wavelengths of [Fe II] lines from redshifted quasar spectra of J110325-264515 and their corresponding values in the laboratory were combined to find a new limit on space-time variations in the proton-to-electron mass ratio, <inline-formula> <math display="inline"> <semantics> <mrow> <mo>∆</mo> <mi>μ</mi> <mo>/</mo> <mi>μ</mi> <mo>=</mo> <mrow> <mo>(</mo> <mrow> <mn>0.096</mn> <mo>±</mo> <mn>0.182</mn> </mrow> <mo>)</mo> </mrow> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>−</mo> <mn>7</mn> </mrow> </msup> </mrow> </semantics> </math> </inline-formula>. The results show how the indicated astrophysical observations can further improve the accuracy and space-time variations of physics constants.