fundamental constant tests 1methanol spectroscopy 1optical frequency comb 1precision frequency measurement 1radio-astronomy 1
From the 1 of 2 linked papers with an AI index.
2 papers
physics.atom-ph2026
Optically Derived Radio-Frequency Benchmark in Methanol: A Sub-kHz Reference for Astrophysical Tests of Fundamental Physics
Frank M. J. Cozijn, Arthémise Altman, Alexandr S. Bogomolov +8
The authors determine the absolute frequency of a key 12.2 GHz methanol transition by measuring related near‑infrared rovibrational lines with an optical frequency comb, achieving…
astro-ph.GA2026
A quantum theory of the alignment and polarization of very small dust grains
Boy Lankhaar
Context. Anomalous microwave emission (AME) is a component of interstellar medium emission peaking at 10-60 GHz. Its polarization is both a CMB foreground and a probe of the alignm…