Linear effects of perturbed recombination
| dc.creator | Lewis, Antony | |
| dc.date | 2007-07-18 | |
| dc.date.accessioned | 2026-07-07T10:56:47Z | |
| dc.date.available | 2026-07-07T10:56:47Z | |
| dc.description | Perturbations in the ionization fraction after recombination affect the Compton cooling of density perturbations. Once the gas temperature starts to decouple from the CMB temperature, ionization fraction perturbations can have a significant influence on the subsequent gas temperature perturbation evolution. This directly affects the 21cm spin temperature of the gas, and also modifies the small-scale baryon perturbation evolution via the difference in baryon pressure. The effect on the gas temperature perturbations can be significant on all scales, and galactic-scale baryon perturbations are modified at the percent level at redshifts z >~ 100 where numerical simulations are typically started. | |
| dc.description | 5 pages; for more details of effect on 21cm see astro-ph/0702600; code available at http://camb.info/sources/ | |
| dc.identifier | https://arxiv.org/abs/0707.2727 | |
| dc.identifier | http://arxiv.org/abs/0707.2727 | |
| dc.identifier | Phys.Rev.D76:063001,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.76.063001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/186535 | |
| dc.subject | Astrophysics | |
| dc.title | Linear effects of perturbed recombination | |
| dc.type | text |