Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-12-11
Mod.Phys.Lett. A20 (2005) 491-498
Astronomy and Astrophysics
Astrophysics
Added: two co-authors and a comment on the possible relation of the discussed CMB properties with the origin of the observed v
Scientific paper
10.1142/S0217732305016658
We have measured the ellipticity of several degree scale anisotropies in the BOOMERanG maps of the Cosmic Microwave Background (CMB) at 150 GHz. The average ellipticity is around 2.6-2.7. The biases of the estimator of the ellipticity and for the noise are small in this case. Large spot elongation had been detected also for COBE-DMR maps. If this effect is due to geodesic mixing, it would indicate a non precisely zero curvature of the Universe which is among the discussed reasons of the WMAP low multipole anomaly. Both effects are related to the diameter of the Universe: the geodesics mixing through hyperbolic geometry, low multipoles through boundary conditions.This common reason can also be related with the origin of the the cosmological constant: the modes of vacuum fluctuations conditioned by the boundary conditions lead to a value of the cosmological constant being in remarkable agreement with the supernovae observations.
Ade Peter A. R.
Bianco Carlo Luciano
Bock James Joseph
Boscaleri Andrea
Crill Brendan P.
No associations
LandOfFree
Is there a common origin for the WMAP low multipole and for the ellipticity in BOOMERanG CMB maps? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Is there a common origin for the WMAP low multipole and for the ellipticity in BOOMERanG CMB maps?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Is there a common origin for the WMAP low multipole and for the ellipticity in BOOMERanG CMB maps? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-726044