News on Dark Matter in Galaxies and Clusters
| dc.creator | Combes, F. | |
| dc.creator | Pfenniger, D. | |
| dc.date | 1994-07-05 | |
| dc.date.accessioned | 2026-07-07T02:19:16Z | |
| dc.date.available | 2026-07-07T02:19:16Z | |
| dc.description | Major progresses have been made this last year towards a better knowledge of the invisible mass. Michel Spiro will talk in details about the micro-lensing experiments and their promising results; the ROSAT satellite has provided extended X-ray maps of the hot gas, which traces dark matter in galaxy clusters: they reveal lower amounts of dark matter in clusters than was previously derived; the dark to visible mass in clusters is not larger than its value in spiral galaxies. It was shown, by X-ray data and gravitational lenses analysis that the dark matter density is highly peaked towards the cluster centers. A new dark matter candidate has also been proposed, in the form of cold and fractal molecular gas that could be present around most late-type spiral galaxies and account for the observed flat rotation curves. | |
| dc.description | 8 pages, uuencoded compressed postscript, XIVth Moriond Astrophysics Meeting, ``Clusters of Galaxies'', Méribel, 12-19 March 1994, OBSGE-DM-5 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9407013 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9407013 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/9798 | |
| dc.subject | Astrophysics | |
| dc.title | News on Dark Matter in Galaxies and Clusters | |
| dc.type | text |