Limits to Global Rotation and Shear From the COBE DMR 4-Year Sky Maps

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

10 pages LaTeX including 3 PostScript figures using psfig style macro. To appear in Physical Review D15

Scientific paper

10.1103/PhysRevD.55.1901

Small departures from a homogeneous isotropic spacetime create observable features in the large-scale anisotropy of the cosmic microwave background. We cross-correlate the maps of the cosmic microwave background anisotropy from the Cosmic Background Explorer (COBE) Differential Microwave Radiometers (DMR) 4-year data set with template maps from Bianchi VII_h cosmological models to limit global rotation or shear in the early universe. On the largest scales, spacetime is well described by the Friedmann-Robertson-Walker metric, with departures from isotropy about each spatial point limited to shear sigma/H_0 < 10^{-9} and rotation omega/H_0 < 6 x 10^{-8} for 0.1 < Omega_0 < 1.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Limits to Global Rotation and Shear From the COBE DMR 4-Year Sky 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 Limits to Global Rotation and Shear From the COBE DMR 4-Year Sky Maps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Limits to Global Rotation and Shear From the COBE DMR 4-Year Sky Maps will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-119414

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.