The Local Bubble Effects on the Cosmic Background Radiation

Details The Local Bubble Effects on the Cosmic Background Radiation The Local Bubble Effects on the Cosmic Background Radiation

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996plas.work..183h&link_type=abstract

Proceedings of the Fourth Brazilian Meeting on Plasma Physics and the Sixth Brazilian Plasma Astrophysics Workshop, p. 183

Physics

Plasma Physics

Cosmic Background Explorer Satellite, Bubbles, Anisotropy, Background Radiation, Spatial Distribution, Cosmic Rays, Dust, Milky Way Galaxy, Quadrupoles, Variations

Scientific paper

Temperature fluctuations delta T/T approximately equals 10-5 have been detected by the COBE team and also by other missions (RELICT, Tenerife) in the cosmic microwave background radiation (CMBR) over angular scales larger than 7 deg corresponding to linear sizes of approximately 1000 h-1 Mpc (for 0.5 is less than or equal to h is less than or equal to 1). These residual fluctuations become evident on the CMBR maps after subtracting out the known dipole and quadrupole contributions to anisotropy produced by the peculiar motion of the observer with respect to the local standard of rest and to the Milky Way. The pattern of the fluctuations does not spatially correlate with known extragalactic source distributions. Furthermore, spatially correlated Galactic free-free and dust emission cannot mimic either the spectrum or the spatial distribution of the fluctuations. The residual fluctuations are interpreted as the signatures of the primordial density/gravitational fluctuations imprinted at the recombination era, about 300,000 years after the big bang, through the Sachs-Wolf effect. Recently, Gouveia Dal Pino et al. have shown that the COBE temperature fluctuations can be fitted by a fractal distribution with a fractal dimension D=1.43 plus or minus 0.07.

Affiliated with

Also associated with

No associations

Rating

The Local Bubble Effects on the Cosmic Background Radiation 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 The Local Bubble Effects on the Cosmic Background Radiation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Local Bubble Effects on the Cosmic Background Radiation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1129752