The Chameleonic Contribution to the SZ Radial Profile of the Coma Cluster
arXiv:1008.1880 · doi:10.1103/PhysRevD.83.044006
Abstract
We constrain the chameleonic Sunyaev--Zel'dovich (CSZ) effect in the Coma cluster from measurements of the Coma radial profile presented in the WMAP 7-year results. The CSZ effect arises from the interaction of a scalar (or pseudoscalar) particle with the cosmic microwave background in the magnetic field of galaxy clusters. We combine this radial profile data with SZ measurements towards the centre of the Coma cluster in different frequency bands, to find Delta T_{SZ,RJ}(0)=-400+/-40 microKelvin and Delta T_{CSZ}^{204 GHz}(0)=-20+/-15 microKelvin (68% CL) for the thermal SZ and CSZ effects in the cluster respectively. The central value leads to an estimate of the photon to scalar (or pseudoscalar) coupling strength of g = (5.2 - 23.8) x 10^{-10} GeV^{-1}, while the 95% confidence bound is estimated to be g < (8.7 - 39.4) x 10^{-10} GeV^{-1}.
arXiv comment13 pages, 3 figures
References in corpus (32)
- Chameleon Fields: Awaiting Surprises for Tests of Gravity in Space
- Chameleon Cosmology
- The Sunyaev-Zel'dovich Effect
- Astrophysical Axion Bounds
- A New Radio - X-Ray Probe of Galaxy Cluster Magnetic Fields
- Magnetic Field in Clusters of Galaxies
- Evading Equivalence Principle Violations, Cosmological and other Experimental Constraints in Scalar Field Theories with a Strong Coupling to Matter
- Experimental observation of optical rotation generated in vacuum by a magnetic field
- Magnetic Fields and Faraday Rotation in Clusters of Galaxies
- New PVLAS results and limits on magnetically induced optical rotation and ellipticity in vacuum
- Strongly Coupled Chameleon Fields: New Horizons in Scalar Field Theory
- The Need for Purely Laboratory-Based Axion-Like Particle Searches
- Compatibility of the chameleon-field model with fifth-force experiments, cosmology, and PVLAS and CAST results
- Measuring the Cluster Magnetic Field Power Spectra from Faraday Rotation Maps of Abell 400, Abell 2634 and Hydra A
- Detecting Chameleons through Casimir Force Measurements
- The Mass Of The Coma Cluster From Weak Lensing In The Sloan Digital Sky Survey
- Correlation of the magnetic field and the intra-cluster gas density in galaxy clusters
- The Magnetic Power Spectrum in Faraday Rotation Screens
- Axions - Motivation, limits and searches
- The spatial energy spectrum of magnetic fields in our Galaxy
- Detecting Chameleons: The Astronomical Polarization Produced by Chameleon-like Scalar Fields
- Testing Chameleon Theories with Light Propagating through a Magnetic Field
- A search for chameleon particles using a photon regeneration technique
- Electromagnetic Polarization Effects due to Axion Photon Mixing
- The Effect of a Chameleon Scalar Field on the Cosmic Microwave Background
- Evidence for an Extended SZ Effect in WMAP Data
- Supernova Brightening from Chameleon-Photon Mixing
- Probing Light Pseudoscalars with Light: Propagation, Resonance and Spontaneous Polarization
- Axions and Axion-like Particles
- Triple Experiment Spectrum of the Sunyaev-Zeldovich Effect in the Coma Cluster: H_0
- Probing Intracluster Magnetic Fields with Cosmic Microwave Background Polarization
- Axions and their Relatives
Cited by in corpus (6)
- Modified Gravity and Cosmology
- Tests of Chameleon Gravity
- Chameleonic Theories: A Short Review
- Evolution of the Chameleon Scalar Field in the Early Universe
- A p<0.0001 detection of CMB cooling in galactic halos and its possible relation to dark matter
- Analysing the Effect on CMB in a Parity and Charge Parity Violating Varying Alpha Theory