P2–137: Analysis of low–abundant proteins in body fluids

Hanisch, Katja; Hoffmann, Ralf

doi:10.1016/j.jalz.2006.05.975

Cited by 1 publication

(1 citation statement)

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“…After the discovery of the Coma radio halo at 408 MHz with the 250-ft radio telescope at Jodrell Bank [177], confirmed from interferometric Cambridge One-Mile telescope radio data [272], observations carried out mostly with single dish radio telescopes (Arecibo, Green Bank 300-ft, Effelsberg and others) and the WSRT found about 10 other clusters with a diffuse halo-type radio emission (see [149]). Jaffe & Rudnick [153], in their search for radio halos, found an extended emission region in the peripheral region of the Coma cluster near the strong radio source Coma A (3C 277.3).…”

Section: Detection Of Diffuse Emissionmentioning

confidence: 91%

Clusters of galaxies: observational properties of the diffuse radio emission

Feretti

Giovannini

Govoni

et al. 2012

Astron Astrophys Rev

678

908

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Clusters of galaxies, as the largest virialized systems in the Universe, are ideal laboratories to study the formation and evolution of cosmic structures. The luminous matter of clusters consists of galaxies and of an embedding intracluster medium (ICM), which has been heated to temperatures of tens of millions degrees, and thus is detected through its thermal emission in the soft X-ray regime. Most of the detailed knowledge of galaxy clusters has been obtained in recent years from the study of ICM through X-ray Astronomy. At the same time, radio observations have proved that the ICM is mixed with non-thermal components, i.e. highly relativistic particles and large-scale magnetic fields, detected through their synchrotron emission.The knowledge of the properties of these non-thermal ICM components has increased significantly, owing to sensitive radio images and to the development of theoretical models. Diffuse synchrotron radio emission in the central and peripheral cluster regions has been found in many clusters. Moreover large-scale magnetic fields appear to be present in all galaxy clusters, as derived from Rotation Measure (RM) studies. Non-thermal components are linked to the cluster X-ray properties, and to the cluster evolutionary stage, and are crucial for a comprehensive physical description of the intracluster medium. They play an important role in the cluster formation and evolution.We review here the observational properties of diffuse non-thermal sources detected in galaxy clusters: halos, relics and mini-halos. We discuss their classification and properties. We report published results up to date and obtain and discuss statistical properties. We present the properties of large-scale magnetic fields in clusters and in even larger structures: filaments connecting galaxy clusters. We summarize the current models of the origin of these cluster components, and outline the improvements that are expected in this area from future developments thanks to the new generation of radio telescopes.

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