Robust Constraint on a Drifting Proton-to-Electron Mass Ratio atz=0.89from Methanol Observation at Three Radio Telescopes

Probing the jet base of the blazar PKS 1830−211 from the chromatic variability of its lensed images

(2013) I. Martí-Vidal et al.   ASTRONOMY & ASTROPHYSICS

A precise and accurate determination of the cosmic microwave background temperature atz= 0.89

(2013) S. Muller et al.   ASTRONOMY & ASTROPHYSICS

QSO 0347-383 and the invariance ofmp/mein the course of cosmic time

(2012) M. Wendt et al.   ASTRONOMY & ASTROPHYSICS

FIRST COSMOLOGICAL CONSTRAINTS ON THE PROTON-TO-ELECTRON MASS RATIO FROM OBSERVATIONS OF ROTATIONAL TRANSITIONS OF METHANOL

(2012) S. P. Ellingsen et al.   Astrophysical Journal Letters

A Stringent Limit on a Drifting Proton-to-Electron Mass Ratio from Alcohol in the Early Universe

(2012) J. Bagdonaite et al.   SCIENCE

Molecules atz= 0.89

(2011) S. Muller et al.   ASTRONOMY & ASTROPHYSICS

METHANOL AS A TRACER OF FUNDAMENTAL CONSTANTS

(2011) S. A. Levshakov et al.   ASTROPHYSICAL JOURNAL

CONSTRAINING CHANGES IN THE PROTON-ELECTRON MASS RATIO WITH INVERSION AND ROTATIONAL LINES

(2011) Nissim Kanekar   Astrophysical Journal Letters

First Constraint on Cosmological Variation of the Proton-to-Electron Mass Ratio from Two Independent Telescopes

(2011) F. van Weerdenburg et al.   PHYSICAL REVIEW LETTERS

Methanol as a Sensitive Probe for Spatial and Temporal Variations of the Proton-to-Electron Mass Ratio

(2011) Paul Jansen et al.   PHYSICAL REVIEW LETTERS

Searching for chameleon-like scalar fields with the ammonia method

(2010) S. A. Levshakov et al.   ASTRONOMY & ASTROPHYSICS

Keck telescope constraint on cosmological variation of the proton-to-electron mass ratio

(2010) A. L. Malec et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Hyperfine structure in the J = 1–0 transitions of DCO+, DNC, and HN13C: astronomical observations and quantum-chemical calculations

(2009) F. F. S. van der Tak et al.   ASTRONOMY & ASTROPHYSICS

The density, the cosmic microwave background, and the proton-to-electron mass ratio in a cloud at redshift 0.9

(2009) C. Henkel et al.   ASTRONOMY & ASTROPHYSICS

Drastic changes in the molecular absorption at redshift z = 0.89 toward the quasar PKS 1830–211

(2008) S. Muller et al.   ASTRONOMY & ASTROPHYSICS

Submillimeter water and ammonia absorption by the peculiar z ≈ 0.89 interstellar medium in the gravitational lens of the PKS 1830-211 system

(2008) K. M. Menten et al.   ASTRONOMY & ASTROPHYSICS

Stringent Null Constraint on Cosmological Evolution of the Proton-to-Electron Mass Ratio

(2008) Julian A. King et al.   PHYSICAL REVIEW LETTERS

Strong Limit on a Variable Proton-to-Electron Mass Ratio from Molecules in the Distant Universe

(2008) M. T. Murphy et al.   SCIENCE

Frequency Ratio of Al+ and Hg+ Single-Ion Optical Clocks; Metrology at the 17th Decimal Place

(2008) T. Rosenband et al.   SCIENCE