"Implausibly Large Structure" in the Universe

  • Context: Graduate 
  • Thread starter Thread starter Islam Hassan
  • Start date Start date
  • Tags Tags
    Structure Universe
Click For Summary

Discussion Overview

The discussion centers around the implications of a newly identified structure of quasars, measuring approximately 4 billion light years in length, on the homogeneity hypothesis of the universe. Participants explore its significance within cosmological theories and its reception in academic circles.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant questions the threat posed by the quasar structure to the homogeneity hypothesis of the universe.
  • Another participant provides a reference to a paper discussing the structure, noting its acceptance for publication but expressing skepticism about its quality.
  • A subsequent reply indicates that the structure is not considered a significant challenge to existing cosmological models.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the significance of the quasar structure, with some expressing concern and others downplaying its importance.

Contextual Notes

There are references to the paper's publication status and its perceived quality, but no detailed analysis of the paper's content or methodology is provided. The discussion reflects varying interpretations of the implications of the findings.

Islam Hassan
Messages
237
Reaction score
5
How much of a threat is this assembly/structure of quasars (400 billion light years long) to the homogeneity hypothesis of the universe?



Is it being taken seriously in academis circles or are researchers shrugging it off for the moment?


IH
 
Last edited by a moderator:
Space news on Phys.org
Here's the paper the Sixty Symbols video is talking about:
http://arxiv.org/abs/1211.6256
"A structure in the early universe at z ~ 1.3 that exceeds the homogeneity scale of the R-W concordance cosmology"

Looks like it hasn't been published yet.


By the way, it's 4 billion ly, not 400.
 
Well, the paper has been published, even the arXiv page says accepted for publication (Journal reference: 2013, MNRAS, 429, 2910). However, from what I understand it's not a very good one. See this paper and a more popular account on the blog of the author.
 
  • Like
Likes   Reactions: 1 person
Thanx phsopher, seems like it's nowhere near a show-stopper...IH
 

Similar threads

Replies
1
Views
2K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 4 ·
Replies
4
Views
5K
  • · Replies 19 ·
Replies
19
Views
3K
  • · Replies 13 ·
Replies
13
Views
7K