scholarly journals Magnetic Fields in Clusters of Galaxies

2003 ◽  
pp. 78-80 ◽  
Author(s):  
Federica Govoni ◽  
Luigina Feretti ◽  
Gabriele Giovannini ◽  
Daniele Dallacasa ◽  
Gregory B. Taylor
Keyword(s):  
Magnetic Fields ◽  
Clusters Of Galaxies

scholarly journals Dynamo in Astrophysics

1990 ◽  
Vol 140 ◽  
pp. 83-89
Author(s):  
A.A. Ruzmaikin
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Turbulent Flow ◽  
Large Scale ◽  
Spiral Galaxies ◽  
Clusters Of Galaxies ◽  
Magnetic Structures ◽  
Random Magnetic Field ◽  
Astrophysical Objects

The fast dynamo acting in a turbulent flow explains the origin of magnetic fields in astrophysical objects. Stellar cycles and large-scale magnetic fields in spiral galaxies reflect the behaviour of a mean magnetic field. Intermittent magnetic structures in clusters of galaxies are associated with random magnetic field.

scholarly journals Cosmic‐Ray Protons and Magnetic Fields in Clusters of Galaxies and Their Cosmological Consequences

1997 ◽  
Vol 477 (2) ◽  
pp. 560-567 ◽  
Author(s):  
Torsten A. Ensslin ◽  
Peter L. Biermann ◽  
Philipp P. Kronberg ◽  
Xiang‐Ping Wu
Keyword(s):  
Magnetic Fields ◽  
Cosmic Ray ◽  
Clusters Of Galaxies

scholarly journals Magnetic fields in clusters of galaxies

2004 ◽  
Vol 48 (11-12) ◽  
pp. 1145-1150 ◽  
Author(s):  
L. Feretti ◽  
M. Johnston-Hollitt
Keyword(s):  
Magnetic Fields ◽  
Clusters Of Galaxies

scholarly journals Cosmic rays in magnetized intracluster plasma

2009 ◽  
Vol 5 (H15) ◽  
pp. 459-460
Author(s):  
L. Feretti ◽  
A. Bonafede ◽  
G. Giovannini ◽  
F. Govoni ◽  
M. Murgia
Keyword(s):  
Magnetic Field ◽  
Cosmic Rays ◽  
Magnetic Fields ◽  
Observational Data ◽  
Clusters Of Galaxies ◽  
Merger Activity ◽  
Rotation Measure ◽  
Field Coherence

A breakthrough in the studies of magnetic fields in clusters of galaxies has been reached in recent years from the analysis of the Rotation Measure of sources seen through the magnetized cluster medium (Govoni & Feretti 2004). The results obtained can be summarized as follows: (i) magnetic fields are present in all clusters; (ii) at the center of clusters undergoing merger activity the field strenght is around 1 μG, whereas at the center of relaxed cooling core clusters the intensity is much higher (~ 10 μG); (iii) a model involving a single magnetic field coherence scale is not suitable to describe the observational data, because of different scales of field ordering and tangling.

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