Conference proceeding
Detecting magnetic fields in large-scale structure with radio polarization
Proceedings of the International Astronomical Union, Vol.4(S259), pp.669-670
11/01/2008
DOI: 10.1017/S1743921309031524
Abstract
We present our attempts to detect magnetic fields in filamentary large-scale structure (LSS) by observing polarized synchrotron emission emitted by structure formation shocks. Little is known about the strength and order of magnetic fields beyond the largest clusters of galaxies, and synchrotron emission holds enormous promise as a means of probing magnetic fields in these low density regions. We report on observations taken at the Green Bank Telescope which reveal a possible Mpc extension to the Coma cluster relic. We also highlight the major obstacle that diffuse galactic foreground emission poses for any search for large-scale, low surface-brightness extragalactic emission. Finally we explore cross-correlation of diffuse radio emission with optical tracers of LSS as a means to statistically detecting magnetic fields in the presence of this confounding foreground emission.
Details
- Title: Subtitle
- Detecting magnetic fields in large-scale structure with radio polarization
- Creators
- Shea Brown - University of MinnesotaLawrence Rudnick - University of MinnesotaDamon Farnsworth - University of Minnesota
- Resource Type
- Conference proceeding
- Publication Details
- Proceedings of the International Astronomical Union, Vol.4(S259), pp.669-670
- Publisher
- Cambridge University Press
- DOI
- 10.1017/S1743921309031524
- ISSN
- 1743-9213
- eISSN
- 1743-9221
- Number of pages
- 2
- Language
- English
- Date published
- 11/01/2008
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984442199202771
Metrics
12 Record Views