Determining the reality of X-ray filaments
| dc.creator | Hardcastle, M. J. | |
| dc.date | 2000-04-17 | |
| dc.date.accessioned | 2026-07-07T01:53:10Z | |
| dc.date.available | 2026-07-07T01:53:10Z | |
| dc.description | A number of authors have reported filaments connecting bright structures in high-resolution X-ray images, and in some cases these have been taken as evidence for a physical connection between the structures, which might be thought to provide support for a model with non-cosmological redshifts. In this paper I point out two problems which are inherent in the interpretation of smoothed photon-limited data of this kind, and develop some simple techniques for the assessment of the reality of X-ray filaments, which can be applied to either simply smoothed or adaptively smoothed data. To illustrate the usefulness of these techniques, I apply them to archival ROSAT observations of galaxies and quasars previously analysed by others. I show that several reported filamentary structures connecting X-ray sources are not in fact significantly detected. | |
| dc.description | To appear in A&A. 7 pages | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0004226 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0004226 | |
| dc.identifier | A&A 357 884 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/873 | |
| dc.subject | Astrophysics | |
| dc.title | Determining the reality of X-ray filaments | |
| dc.type | text |