The proximity Effect on the Lyman alpha Forest due to a Foreground QSO
| dc.creator | Fernandez-Soto, A. | |
| dc.creator | Barcons, X. | |
| dc.creator | Carballo, R. | |
| dc.creator | Webb, J. K. | |
| dc.date | 1995-04-06 | |
| dc.date.accessioned | 2026-07-07T02:19:44Z | |
| dc.date.available | 2026-07-07T02:19:44Z | |
| dc.description | We present the results of our study on three close pairs of QSOs. Our results are consistent with the existence of a proximity effect due to the foreground QSO, but due to its weakness we can only reject the absence of such effect at approx. 1 sigma level. By modelling this proximity effect in terms of a simple photoionisation model, we find the best value for the UV ionizing background to be approx. 10**(-20.5) erg cm**(-2) s**(-1) Hz**(-1) srad**(-1) at the Lyman limit, and an absolute lower limit (95\% confidence) of 10**(-21.8) in the same units. This lower limit rejects a number of models for the UV background where it is mostly contributed by QSOs and absorption by Lyman limit systems is taken into account. | |
| dc.description | 2 pages uuencoded compressed PostScript file. To appear in the Proceedings of the 1994 ESO Workshop on QSO Absorption lines. Summary of a larger work submitted to MNRAS | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9504017 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9504017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/9980 | |
| dc.subject | Astrophysics | |
| dc.title | The proximity Effect on the Lyman alpha Forest due to a Foreground QSO | |
| dc.type | text |