Talk:Einstein Cross

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Contents 1 gravitational lensing phenomenon 2 Removed "expand" request 3 Merging with Gravitational Lens 4 why four "copies" instead of a ring?

[edit] gravitational lensing phenomenon

The article should be rewritten to discuss the concept called "Einstein cross" and then give the configuration of objects mentioned in the current version as an example of this concept.

An interesting point is that we must speak of configurations of objects (source, lensing mass, and observer) which are gravitational lens, rather than single objects which are gravititional lens.---CH (talk) 22:57, 22 August 2005 (UTC)

such an article would sit at Einstein cross without the capital C. 70.51.9.199 03:51, 19 April 2006 (UTC)

[edit] Removed "expand" request

I removed the "expand" request template because the details of the formation of the Einstein Cross are more appropriately included in the main article on gravitational lensing. HEL 02:00, 29 October 2006 (UTC)

[edit] Merging with Gravitational Lens

I'm proposing merger because I don't think that there's enough information here to deserve it's own page. It would be much more suitable to be under the gravitational lens and mentioned as thus. Imasleepviking 20:35, 27 January 2007 (UTC)

I disagree; this article is about a gravitational lens, not the concept of Einstein crosses in general. If we merge this article into Gravitational Lens, then we would need to merge the other articles about individual gravitational lenses into it too, which wouldn't be a good idea. Mike Peel 10:59, 28 January 2007 (UTC)

[edit] why four "copies" instead of a ring?

I can see why a ring like phenomena like in the article on gravitational lensing should appear. But why a cross? What is this mechanism for this "quadrupolizing"? Some expert should explain that in the article. —Preceding unsigned comment added by Agge1000 (talk • contribs) 17:29, 20 September 2007 (UTC)