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- Radio_relics abstract "Radio Relics are diffuse synchrotron radio sources found in the peripheral regions of galaxy clusters. As in the case of radio halos, they do not have any obvious galaxy counterpart, but their shapes are much more elongated and irregular compared to those of radio halos. Their energy distribution is steep (much more energy at low radio frequency than at high radio frequency), with hints of a distribution of different ages for the emitting electrons across the whole dimension of the emitting region.Radio relics can be divided into two main groups: Cluster radio shocks or radio gischt are large elongated, often Mpc-sized, radio sources located in the periphery of merging clusters. They probably trace shock fronts in which particles are accelerated via the diffusive shock acceleration mechanism. Among them are double-relics with the two relics located on both sides of a cluster center. Their integrated radio spectrum usually follows a single power-law. Radio phoenices are related to radio-loud active galactic nuclei (AGN). Fossil radio plasma from a previous episode of AGN activity is thought to be compressed by a merger shock wave which boosts, both, the magnetic field inside the plasma as well as the momenta of the relativistic particles. As a result the radio plasma brightens in synchrotron emission. In contrast to the radio gischt, the phoenices have a steep curved spectrum indicating an old population of electrons.The sizes of relics and the distance to the cluster centre vary significantly. Examples for radio relics with sizes of 1 Mpc or even larger have been observed in Coma(the prototype relic source 1253 + 275), Abell 2255 and Abell 2256, which contain both a relic and a halo (as do Abell 225, Abell 521, Abell 754, Abell 1300, Abell 2255 and Abell 2744). The cluster Abell 3667 contains two very luminous, almost symmetricrelics with a separation of more than 5 Mpc, as does ZwCl 2341.1+0000, Abell 2345, Abell 1240, and ZwCl 0008.8+5215. The relic with the best evidence for shock acceleration found to date is located in the northernoutskirts of the merging galaxy cluster CIZA J2242.8+5301. This relic has been nicknamed the sausage and has been discovered by Reinout van Weeren and Marcus Bruggen using the Giant Metrewave Radio Telescope (GMRT) in India.".
- Radio_relics wikiPageID "13675269".
- Radio_relics wikiPageLength "3605".
- Radio_relics wikiPageOutDegree "19".
- Radio_relics wikiPageRevisionID "673340963".
- Radio_relics wikiPageWikiLink Abell_2256.
- Radio_relics wikiPageWikiLink Active_galactic_nucleus.
- Radio_relics wikiPageWikiLink Bow_shock.
- Radio_relics wikiPageWikiLink Bow_shocks_in_astrophysics.
- Radio_relics wikiPageWikiLink Category:Galaxy_clusters.
- Radio_relics wikiPageWikiLink Category:Large-scale_structure_of_the_cosmos.
- Radio_relics wikiPageWikiLink Electron.
- Radio_relics wikiPageWikiLink Frequency.
- Radio_relics wikiPageWikiLink Galaxy.
- Radio_relics wikiPageWikiLink Galaxy_cluster.
- Radio_relics wikiPageWikiLink Giant_Metrewave_Radio_Telescope.
- Radio_relics wikiPageWikiLink Magnetic_field.
- Radio_relics wikiPageWikiLink Megaparsec.
- Radio_relics wikiPageWikiLink Parsec.
- Radio_relics wikiPageWikiLink Plasma_(physics).
- Radio_relics wikiPageWikiLink Radio.
- Radio_relics wikiPageWikiLink Radio_halo.
- Radio_relics wikiPageWikiLink Radio_halos.
- Radio_relics wikiPageWikiLink Synchrotron.
- Radio_relics wikiPageWikiLink Theory_of_relativity.
- Radio_relics wikiPageWikiLinkText "Large Relic".
- Radio_relics wikiPageWikiLinkText "Radio relics".
- Radio_relics wikiPageWikiLinkText "radio relics".
- Radio_relics hasPhotoCollection Radio_relics.
- Radio_relics wikiPageUsesTemplate Template:No_footnotes.
- Radio_relics wikiPageUsesTemplate Template:Refbegin.
- Radio_relics wikiPageUsesTemplate Template:Refend.
- Radio_relics subject Category:Galaxy_clusters.
- Radio_relics subject Category:Large-scale_structure_of_the_cosmos.
- Radio_relics hypernym Sources.
- Radio_relics type Article.
- Radio_relics type Nerve.
- Radio_relics type Article.
- Radio_relics type Object.
- Radio_relics comment "Radio Relics are diffuse synchrotron radio sources found in the peripheral regions of galaxy clusters. As in the case of radio halos, they do not have any obvious galaxy counterpart, but their shapes are much more elongated and irregular compared to those of radio halos.".
- Radio_relics label "Radio relics".
- Radio_relics sameAs m.03cds_d.
- Radio_relics sameAs Q7281194.
- Radio_relics sameAs Q7281194.
- Radio_relics wasDerivedFrom Radio_relics?oldid=673340963.
- Radio_relics isPrimaryTopicOf Radio_relics.