Abstract
We investigated the smoothing of the cosmic background radiation (CBR) through gravitational scatterings. The CBR is gravitationally scattered by galaxies, clusters of galaxies, and superclusters during the travel from the last scattering surface. Although the effect of the gravitational scatterings was thought to be unimportant, we found that the scatterings by superclusters reduce the anisotropy by a large factor. This result is explained by the fact that the distance between two light rays increases exponentially through multiple scatterings. This exponential growth occurs if the distance is smaller than the critical distance determined by the number density of the scattering objects. We found that the gravitational scatterings by superclusters can reduce the temperature anisotropy of the CBR at present time by a large factor, in angular scales up to a few degrees.
Preview
Unable to display preview. Download preview PDF.
References
Blanchard A., Schneider J., 1978, A&A 184, 1
Cole S., Efstathiou G., 1989, MNRAS 239, 195
Fukushige, T., Makino J., Ebisuzaki T., 1993, submitted to ApJL
Goodman J., Heggie D.C., Hut P., 1993, ApJ (in press)
Miller R.H., 1964, ApJ l140, 250
Sasaki M., 1989, MNRAS 240, 415
Tomita K., Watanabe K., 1989, Prog. Theor. Phys. 82, 563
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1994 Springer-Verlag
About this paper
Cite this paper
Making, J. (1994). Smoothing of the cosmic background radiation by multiple gravitational scattering. In: Gurzadyan, V.G., Pfenniger, D. (eds) Ergodic Concepts in Stellar Dynamics. Lecture Notes in Physics, vol 430. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0058121
Download citation
DOI: https://doi.org/10.1007/BFb0058121
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-57929-8
Online ISBN: 978-3-540-48386-1
eBook Packages: Springer Book Archive