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20042025
most citedLimits on the time variation of the electromagnetic fine-structure constant in the low energy limit from absorption lines in the spectra of distant quasars

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astro-ph2006★ 99 cited

On the variation of the fine-structure constant: Very high resolution spectrum of QSO HE 0515-4414

Hum Chand, Raghunathan Srianand, Patrick Petitjean +3

We present a detailed analysis of a very high resolution (R\approx 112,000) spectrum of the quasar HE 0515-4414 obtained using the High Accuracy Radial velocity Planet Searcher (HA…