Published 2016 | Version v1
Journal article Metadata-only

New Constraints on Spatial Variations of the Fine Structure Constant from Clusters of Galaxies

Creators

  • 1. Faculty of Science and Technology, Department of Theoretical Physics and History of Science, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa (Spain)
  • 2. Centro de Astrofisica da Universidade do Porto, Rua das Estrelas s/n, 4150-762 Porto (Portugal)
  • 3. Institute for Astronomy, University of Hawaii, Honolulu, HI 96822 (United States)
  • 4. Department of Physics and Astronomy, Colby College, Waterville, ME 04901 (United States)

Description

We have constrained the spatial variation of the fine structure constant using multi-frequency measurements of the thermal Sunyaev-Zeldovich effect of 618 X-ray selected clusters. Although our results are not competitive with the ones from quasar absorption lines, we improved by a factor 10 and ∼2.5 previous results from Cosmic Microwave Background power spectrum and from galaxy clusters, respectively.

Availability note (English)

Available from https://www.mdpi.com/2218-1997/2/4/34/pdf; https://doaj.org/article/32eca0063a54460797138814db9dda7a; http://www.mdpi.com/2218-1997/2/4/34

Additional details

Identifiers

URL
https://www.mdpi.com/2218-1997/2/4/34/pdf; https://doaj.org/article/32eca0063a54460797138814db9dda7a; http://www.mdpi.com/2218-1997/2/4/34;
DOI
10.3390/universe2040034;

Publishing Information

Journal Title
Universe
Journal Volume
2
Journal Issue
4
Journal Page Range
vp.
ISSN
2218-1997

INIS

Country of Publication
Switzerland
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
51035558
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
ABSORPTION; FINE STRUCTURE; FREQUENCY MEASUREMENT; GALAXY CLUSTERS; QUASARS; RELICT RADIATION; SPECTRA; X RADIATION
Descriptors DEC
COSMIC RADIO SOURCES; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; MICROWAVE RADIATION; RADIATIONS; SORPTION