Testing the isotropy of the Cosmic Microwave Backround
| dc.creator | Hansen, F. K. | |
| dc.date | 2004-06-17 | |
| dc.date.accessioned | 2026-07-07T02:13:33Z | |
| dc.date.available | 2026-07-07T02:13:33Z | |
| dc.description | There have recently been several claims of an asymmetric distribution of large scale fluctuations in the WMAP data. I review some recent results from a test of isotropy of the power spectrum at all scales and show how the power is asymmetrically distributed for the multipole range l=5-40 in three WMAP frequency channels. I compare this to a recent detection of a non-Gaussian signal in one part of the sky using the local curvature properties of the cosmic microwave background fluctuation field. I find that there may be a common origin of these two findings due to a similar direction and frequency independence of the results. | |
| dc.description | 4 pages, to appear in the proceedings of the XXXIX Rencontres de Moriond "Exploring the Universe", La Thuile, Italy, March 28 - April 4, 2004 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0406393 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0406393 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/7853 | |
| dc.subject | Astrophysics | |
| dc.title | Testing the isotropy of the Cosmic Microwave Backround | |
| dc.type | text |