Large Angular Scale CMB Anisotropy Induced by Cosmic Strings
| dc.creator | Allen, B. | |
| dc.creator | Caldwell, R. R. | |
| dc.creator | Shellard, E. P. S. | |
| dc.creator | Stebbins, A. | |
| dc.creator | Veeraraghavan, S. | |
| dc.date | 1996-09-05 | |
| dc.date.accessioned | 2026-07-07T11:34:04Z | |
| dc.date.available | 2026-07-07T11:34:04Z | |
| dc.description | We simulate the anisotropy in the cosmic microwave background (CMB) induced by cosmic strings. By numerically evolving a network of cosmic strings we generate full-sky CMB temperature anisotropy maps. Based on $192$ maps, we compute the anisotropy power spectrum for multipole moments $\ell \le 20$. By comparing with the observed temperature anisotropy, we set the normalization for the cosmic string mass-per-unit-length $μ$, obtaining $Gμ/c^2=1.05 {}^{+0.35}_{-0.20} \times10^{-6}$, which is consistent with all other observational constraints on cosmic strings. We demonstrate that the anisotropy pattern is consistent with a Gaussian random field on large angular scales. | |
| dc.description | 4 pages, RevTeX, two postscript files, also available at http://www.damtp.cam.ac.uk/user/defects/ to appear in Physical Review Letters, 23 September 1996 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9609038 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9609038 | |
| dc.identifier | Phys.Rev.Lett.77:3061-3065,1996 | |
| dc.identifier | doi:10.1103/PhysRevLett.77.3061 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/198118 | |
| dc.subject | Astrophysics | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Large Angular Scale CMB Anisotropy Induced by Cosmic Strings | |
| dc.type | text |