1.6k citations
- Max Planck Institute for Radio AstronomyDE208 papers
- Chinese Academy of SciencesCN199 papers
- University of Hawaii SystemUS167 papers
- University of Hawaiʻi at MānoaUS154 papers
- The University of TokyoJP149 papers
- University of LjubljanaSI146 papers
- University of MariborSI145 papers
- Centre National de la Recherche ScientifiqueFR142 papers
- Nagoya UniversityJP140 papers
- Tata Institute of Fundamental ResearchIN139 papers
- Charles UniversityCZ136 papers
- National Taiwan UniversityTW136 papers
53 papers · 1 filter
The Megamaser Cosmology Project. XIII. Combined Hubble constant constraints
D. W. Pesce, J. A. Braatz, M. J. Reid +8
We present a measurement of the Hubble constant made using geometric distance measurements to megamaser-hosting galaxies. We have applied an improved approach for fitting maser dat…
Testing the weak equivalence principle by differential measurements of fundamental constants in the Magellanic Clouds
S. A. Levshakov, K. -W. Ng, C. Henkel +4
Non-standard fields are assumed to be responsible for phenomena attributed to dark energy and dark matter. Being coupled to ordinary matter, these fields modify the masses and/or c…
Testing the variability of the proton-to-electron mass ratio from observations of methanol in the dark cloud core L1498
M. Daprà, C. Henkel, S. A. Levshakov +6
The dependence of the proton-to-electron mass ratio, mu, on the local matter density was investigated using methanol emission in the dense dark cloud core L1498. Towards two differ…
Constraints on changes in the proton-electron mass ratio using methanol lines
N. Kanekar, W. Ubachs, K. M. Menten +6
We report Karl G. Jansky Very Large Array (VLA) absorption spectroscopy in four methanol (CHOH) lines in the gravitational lens towards PKS1830-211. Three of the…
Reconstruction of the primordial power spectra with Planck and BICEP2
Bin Hu, Jian-Wei Hu, Zong-Kuan Guo +1
By using the cubic spline interpolation method, we reconstruct the shape of the primordial scalar and tensor power spectra from the recently released {\it Planck} temperature and B…
Robust Constraint on a Drifting Proton-to-Electron Mass Ratio at z=0.89 from Methanol Observation at Three Radio Telescopes
Julija Bagdonaite, Mario Daprà, Paul Jansen +5
A limit on a possible cosmological variation of the proton-to-electron mass ratio is derived from methanol (CHOH) absorption lines in the benchmark PKS1830211 lensing ga…