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- Abell_520 abstract "The Abell 520 galaxy cluster possesses an unusual substructure resulting from a major merger. It has been popularly nicknamed The Train Wreck Cluster, due to its chaotic structure, and is classified as a Bautz-Morgan type III cluster. It is at a co-moving radial distance of 811 Mpc (2,645 Mly) and subtends 25 arcminutes on the sky. Analysis of the motions of 293 galaxies in the cluster field suggested that Abell 520 was a cluster forming at the crossing of three filaments of the large scale structureThe surprising substructure of Abell 520 was reported in 2007 from a weak gravitational lensing study based on Canada-France-Hawaii-Telescope (CFHT) imaging data. It was surprising because the study found the \"dark core\" with a significant amount of mass in the region, where there is no concentration of bright cluster galaxies. No conventional understanding of dark matter can explain this peculiar concentration of dark matter. One interesting interpretation is that the substructure may arise from non-gravitational interaction of dark matter.However, in the year 2012 two international teams of astronomers published conflicting results on Abell 520. While one study based on the Wide Field Planetary Camera 2 (WFPC2) on Hubble Space Telescope (HST) confirmed the previous claim of the dark core in Abell 520, the other study based on the Advanced Camera for Surveys (ACS) did not support the claim.In 2014, the conflicts were resolved by the study, which analyzed the data from both teams and showed that in fact the ACS data also confirm the presence of the dark core. Currently, the \"dark core\" mystery in Abell 520 still remains.".
- Abell_520 thumbnail A520-mass+xray+lum-4up-m-1.jpg?width=300.
- Abell_520 wikiPageExternalLink DarkMatterCore.
- Abell_520 wikiPageExternalLink galaxy-cluster-collision-creates-a-dark-matter-core.
- Abell_520 wikiPageID "12948410".
- Abell_520 wikiPageLength "8764".
- Abell_520 wikiPageOutDegree "25".
- Abell_520 wikiPageRevisionID "707505708".
- Abell_520 wikiPageWikiLink Abell_catalogue.
- Abell_520 wikiPageWikiLink Bautz-Morgan_classification.
- Abell_520 wikiPageWikiLink Bullet_Cluster.
- Abell_520 wikiPageWikiLink Category:Abell_objects.
- Abell_520 wikiPageWikiLink Category:Abell_richness_class_3.
- Abell_520 wikiPageWikiLink Category:Dark_matter.
- Abell_520 wikiPageWikiLink Category:Extragalactic_astronomy.
- Abell_520 wikiPageWikiLink Category:Galaxy_clusters.
- Abell_520 wikiPageWikiLink Distance_measures_(cosmology).
- Abell_520 wikiPageWikiLink Electronvolt.
- Abell_520 wikiPageWikiLink Epoch_(astronomy).
- Abell_520 wikiPageWikiLink Erg.
- Abell_520 wikiPageWikiLink Galaxy_cluster.
- Abell_520 wikiPageWikiLink Galaxy_merger.
- Abell_520 wikiPageWikiLink List_of_Abell_clusters.
- Abell_520 wikiPageWikiLink List_of_galaxy_groups_and_clusters.
- Abell_520 wikiPageWikiLink Minute_and_second_of_arc.
- Abell_520 wikiPageWikiLink NASA.
- Abell_520 wikiPageWikiLink Orion_(constellation).
- Abell_520 wikiPageWikiLink Subtended_angle.
- Abell_520 wikiPageWikiLink File:A520-mass+xray+lum-4up-m-1.jpg.
- Abell_520 wikiPageWikiLink File:A520_comp.jpg.
- Abell_520 wikiPageWikiLinkText "520".
- Abell_520 wikiPageWikiLinkText "Abell 520".
- Abell_520 wikiPageWikiLinkText "Train Wreck Cluster".
- Abell_520 bmtype "III".
- Abell_520 caption "Abell 520. Imaged January 2012.".
- Abell_520 constellation Orion_(constellation).
- Abell_520 credit NASA.
- Abell_520 epoch Epoch_(astronomy).
- Abell_520 flux "8.4".
- Abell_520 luminosity "erg/s".
- Abell_520 mass "17".
- Abell_520 memberNo "289".
- Abell_520 name "Abell 520".
- Abell_520 otherNames "The Train Wreck Cluster".
- Abell_520 redshift "0.2".
- Abell_520 richness "3".
- Abell_520 temperature "9.8".
- Abell_520 velocityDispersion "1066.0".
- Abell_520 wikiPageUsesTemplate Template:Catalogs.
- Abell_520 wikiPageUsesTemplate Template:Convert.
- Abell_520 wikiPageUsesTemplate Template:DEC.
- Abell_520 wikiPageUsesTemplate Template:E.
- Abell_520 wikiPageUsesTemplate Template:Galaxy.
- Abell_520 wikiPageUsesTemplate Template:Hub.
- Abell_520 wikiPageUsesTemplate Template:Infobox_galaxy_cluster.
- Abell_520 wikiPageUsesTemplate Template:RA.
- Abell_520 wikiPageUsesTemplate Template:Reflist.
- Abell_520 wikiPageUsesTemplate Template:Sky.
- Abell_520 wikiPageUsesTemplate Template:Val.
- Abell_520 subject Category:Abell_objects.
- Abell_520 subject Category:Abell_richness_class_3.
- Abell_520 subject Category:Dark_matter.
- Abell_520 subject Category:Extragalactic_astronomy.
- Abell_520 subject Category:Galaxy_clusters.
- Abell_520 type Catalogue.
- Abell_520 type Object.
- Abell_520 type Physic.
- Abell_520 type Sub-discipline.
- Abell_520 comment "The Abell 520 galaxy cluster possesses an unusual substructure resulting from a major merger. It has been popularly nicknamed The Train Wreck Cluster, due to its chaotic structure, and is classified as a Bautz-Morgan type III cluster. It is at a co-moving radial distance of 811 Mpc (2,645 Mly) and subtends 25 arcminutes on the sky.".
- Abell_520 label "Abell 520".
- Abell_520 sameAs Q318654.
- Abell_520 sameAs Abell_520.
- Abell_520 sameAs Abell_520.
- Abell_520 sameAs Abell_520.
- Abell_520 sameAs Abell_520.
- Abell_520 sameAs Abell_520.
- Abell_520 sameAs m.02z11d1.
- Abell_520 sameAs Abell_520.
- Abell_520 sameAs Q318654.
- Abell_520 wasDerivedFrom Abell_520?oldid=707505708.
- Abell_520 depiction A520-mass+xray+lum-4up-m-1.jpg.
- Abell_520 isPrimaryTopicOf Abell_520.