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Limits on Variations in Fundamental Constants from 21-cm · 2005 · Physical Review Letters · DOI 10.1103/physrevlett.95.041301

1 Pith paper cite this work, alongside 80 external citations. Polarity classification is still indexing.

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The FAST HI 21-cm Absorption Blind Survey. III. OH Absorption Search in the 21-cm Absorber Sample and Continued HI Absorption Search

astro-ph.GA · 2026-07-17 · accept · novelty 5.0

A blind FAST survey of 41 HI absorbers re-detected the known OH absorber PKS 1413+135, found no new OH, and set [OH]/[HI] upper limits near 1e-8.

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The FAST HI 21-cm Absorption Blind Survey. III. OH Absorption Search in the 21-cm Absorber Sample and Continued HI Absorption Search astro-ph.GA · 2026-07-17 · accept · none · ref 47
A blind FAST survey of 41 HI absorbers re-detected the known OH absorber PKS 1413+135, found no new OH, and set [OH]/[HI] upper limits near 1e-8.

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