An upper limit to the variation in the fundamental constants at redshift z = 5.2

S. Levshakov , F. Combes (1) , F. Boone (2) , I. Agafonova , D. Reimers , M. Kozlov (3)

1 LERMA - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique
2 IRAP - Institut de recherche en astrophysique et planétologie
3 Department of Biology, University of Turku

Domaines: Physique [physics]; Astrophysique [astro-ph]

S. Levshakov, F. Combes, F. Boone, I. Agafonova, D. Reimers, et al.. An upper limit to the variation in the fundamental constants at redshift z = 5.2. Astronomy and Astrophysics - A&A, 2012, 540, pp.L9. ⟨10.1051/0004-6361/201219042⟩. ⟨hal-02771695⟩