SuperclusterSCL 126

Maret Einasto,Erik Tago, Jaak Jaaniste, Jaan Einasto, Ivan Suhhonenko and others

Tartu Observatory

SCL126 in catalogs: R.A. 13h Dec. –3o, Distance: 240 Mpc

7 Abell clusters, 4 of them – X-ray clusters: Einasto et al. 1994, 1997, 2001

Shape and orientationVery compact core with X-ray clusters (collapsing supercluster? Gramann and Suhhonenko 2002)Very flatPerpendicular to the line-of-sight

2dF team, Colless et al. 2003

SCL126 in LCRS-3o slice

A1750

A1651, 1650:SZ effect(Udomprasert etal 2004)

Multiple mergersEvidence of a filament with X-ray clusters(Belsole etal 2004, Donelly etal 2001)

Imprints of such superclusters on CMB maps(SZ, RS effects, Rubino-Martin etal 2004)

SCL126 in 2dF

SCL126-like systems in ΛCDM model

Model M768: no supercluster of similar richness and high density core (One “SCL126 candidate”)?

RFoF = 20 h-1 Mpc RFoF = 24 h-1 Mpc

SCL 126

Very rich Very compact core with several X-ray clusters X-ray data: multiple merger events at present and in the pastCollapsing core? One of the first superclusters?

Problem to the ΛCDM model?