Position Angles and Alignments of Galaxy Clusters
| dc.creator | Plionis, Manolis | |
| dc.date | 1993-12-07 | |
| dc.date.accessioned | 2026-07-07T02:19:00Z | |
| dc.date.available | 2026-07-07T02:19:00Z | |
| dc.description | The position angles of a large number of Abell and Shectman clusters (in total 637 clusters), identified in the Lick map as surface density enhancements, are estimated. Using published redshifts for 277 of these I have detected strong nearest neighbour alignments (2.5 - 3 sigma level), up to about 15 Mpc (Ho = 100). Weaker alignments but still significant are found up to larger separations. An even more significant alignment (4 sigma) is found between all neighbours residing in superclusters and having separations <= 10 Mpc. Again weaker but significant alignments are found when larger separations are considered. I have performed various tests to check whether systematic effects could induce an artificial alignment signal but I find no evidence for the presence of such effects. Since my cluster sample is neither volume limited nor redshift complete, a fact that would tend to wash-out any real alignment signal, the alignments detected should reflect a real and possibly a stronger underline effect. | |
| dc.description | 31 pages, POSTSCRIPT FILE (figures available on request).e-mail: PLIONIS@TSMI19.SISSA.IT or 38028::PLIONIS) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9312013 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9312013 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/9703 | |
| dc.subject | Astrophysics | |
| dc.title | Position Angles and Alignments of Galaxy Clusters | |
| dc.type | text |