Microwave sky and the local Rees-Sciama effect
| dc.creator | Rakic, Aleksandar | |
| dc.creator | Rasanen, Syksy | |
| dc.creator | Schwarz, Dominik J. | |
| dc.date | 2006-01-19 | |
| dc.date | 2006-04-21 | |
| dc.date.accessioned | 2026-07-07T10:27:47Z | |
| dc.date.available | 2026-07-07T10:27:47Z | |
| dc.description | The microwave sky shows unexpected features at the largest angular scales, among them the alignments of the dipole, quadrupole and octopole. Motivated by recent X-ray cluster studies, we investigate the possibility that local structures at the 100 h^(-1) Mpc scale could be responsible for such correlations. These structures give rise to a local Rees-Sciama contribution to the microwave sky that may amount to Delta T/T ~ 10^(-5) at the largest angular scales. We model local structures by a spherical overdensity (Lemaitre-Tolman-Bondi model) and assume that the Local Group is falling toward the centre. We superimpose the local Rees-Sciama effect on a statistically isotropic, gaussian sky. As expected we find alignments among low multipoles, but a closer look reveals that they do not agree with the type of correlations revealed by the data. | |
| dc.description | 6 pages, 2 figures, 2 tables; v3: references added, presentation improved; Supplementary material at http://www.physik.uni-bielefeld.de/cosmology/rs.html | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0601445 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0601445 | |
| dc.identifier | Mon.Not.Roy.Astron.Soc.369:L27-L31,2006 | |
| dc.identifier | doi:10.1111/j.1745-3933.2006.00167.x | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177255 | |
| dc.subject | Astrophysics | |
| dc.title | Microwave sky and the local Rees-Sciama effect | |
| dc.type | text |