CosmoCoffee Forum Index CosmoCoffee

 
 FAQFAQ   SearchSearch  MemberlistSmartFeed   MemberlistMemberlist    RegisterRegister 
   ProfileProfile   Log inLog in 
Arxiv New Filter | Bookmarks & clubs | Arxiv ref/author:

[astro-ph/0703325] Does the Universe Have a Handedness
 
Authors:Michael J. Longo
Abstract:In this article I study the distribution of spiral galaxies in the Sloan Digital Sky Survey (SDSS) to investigate whether the universe has an overall handedness. A preference for spiral galaxies in one sector of the sky to be left-handed or right-handed spirals would indicate an asymmetry in the overall universe and a preferred axis. The SDSS data show a strong signal for such an asymmetry. Its axis seems to be strongly correlated with that of the quadrupole and octopole moments in the WMAP microwave sky survey, an unlikely alignment that has been dubbed "the axis of Evil".
[PDF] [PS] [BibTex] [Bookmark]

Post new topic   Reply to topic    CosmoCoffee Forum Index -> arXiv papers
View previous topic :: View next topic  
Author Message
Garth Antony Barber



Joined: 19 Jul 2005
Posts: 71
Affiliation: Published independent

PostPosted: March 14 2007  Reply with quote

Sinister or Dexter?

Is this effect real?

Garth
Back to top
View user's profile  
Kate Land



Joined: 27 Sep 2004
Posts: 29
Affiliation: Oxford University

PostPosted: April 03 2007  Reply with quote

An interesting observation - but it is not clear from this paper if the handedness bias seen in the SDSS spiral galaxies is really significant. There will be some correlation between the rotation axis and handeness of nearby galaxies, and this has not been taken into account. I imagine the ~2.9 sigma result would be reduced.

The analysis has been done in the equatorial coordinates only, with results binned by RA (averages taken over declination). The signal might be stronger in a different frame...
Back to top
View user's profile [ Hidden ] Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    CosmoCoffee Forum Index -> arXiv papers All times are GMT + 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group. Sponsored by WordWeb online dictionary and dictionary software.