MACHO versus HST: how bright can dark matter be?
| dc.creator | Kerins, E. J. | |
| dc.date | 1997-10-06 | |
| dc.date.accessioned | 2026-07-07T02:24:26Z | |
| dc.date.available | 2026-07-07T02:24:26Z | |
| dc.description | Recent results from gravitational microlensing experiments, such as MACHO, indicate that a substantial fraction of the Galactic dark matter (DM) is in compact form, with a typical mass in the range ~0.05 - 1 Mo. This mass range favours the DM being either low-mass hydrogen-burning stars or white-dwarf remnants of an early stellar population. There appears however to be a conflict between microlensing and other results, such as from Hubble Space Telescope (HST), which argue against a high DM fraction in hydrogen-burning stars or their remnants. Here I discuss the possibility that the DM detected by MACHO comprises low-mass stars residing in globular cluster associations. I show that such a scenario can reconcile HST and MACHO results and can also satisfy cluster dynamical constraints. | |
| dc.description | 3 pages, latex + 1 postscript figure. Requires psfig.sty and mprocl.sty. To appear in the proceedings of the 8th Marcel Grossmann meeting on General Relativity, Jerusalem, 22-27 June 1997 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9710061 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9710061 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/11617 | |
| dc.subject | Astrophysics | |
| dc.title | MACHO versus HST: how bright can dark matter be? | |
| dc.type | text |