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Detection of excess rotation measure due to intracluster magnetic fields in clusters of galaxies
Abstract
The Faraday rotation measures of a sample of extragalactic radio sources projected within a third of an Abell radius of a galaxy cluster were compared with those of sources located further from cluster centers. The result strongly indicates that the distribution of the residual rotation measure (RRM) in the former population is broadened, at a confidence level exceeding 99%. The broadening is detectable out to 1h^-1^_50_ Mpc. Our best estimate of the excess Faraday rotation measure varies from 100+/-36 rad m^-2^ in the central sixth of an Abell radius to 36+/-15 rad m^-2^ further out. The combination of these results with electron densities determined from X-ray data for some of the clusters suggests that magnetic field strengths in cluster gas are of order 1 microgauss.
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Cited by
First results from the IllustrisTNG simulations: radio haloes and magnetic fields
Marinacci, F., Vogelsberger, M., Pakmor, R., Torrey, P., Springel, V., Hernquist, L., Nelson, D., Weinberger, R., Pillepich, A., Naiman, J., et al. (2018) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/sty2206 · Cited by 1,084
Clusters of galaxies: observational properties of the diffuse radio emission
Feretti, L., Giovannini, G., Govoni, F., & Murgia, M. (2012) · The Astronomy and Astrophysics Review · doi:10.1007/s00159-012-0054-z · Cited by 667
MAGNETIC FIELDS IN CLUSTERS OF GALAXIES
GOVONI, F., & FERETTI, L. (2004) · International Journal of Modern Physics D · doi:10.1142/s0218271804005080 · Cited by 486
Generation of large scale magnetic fields in single-field inflation
Martin, J., & Yokoyama, J. (2008) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2008/01/025 · Cited by 295
Clusters of Galaxies as Storage Room for Cosmic Rays
Berezinsky, V. S., Blasi, P., & Ptuskin, V. S. (1997) · The Astrophysical Journal · doi:10.1086/304622 · Cited by 271
Metadata
- Authors
- Kim, K.-T., Kronberg, P. P., & Tribble, P. C.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1991-09
- Volume
- 379
- Pages
- 80
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2152576208
- Cited by
- 237
- References
- 0
- FWCI
- 2.86
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kim, K.-T., Kronberg, P. P., & Tribble, P. C. (1991). Detection of excess rotation measure due to intracluster magnetic fields in clusters of galaxies. The Astrophysical Journal. https://doi.org/10.1086/170484
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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