X-ray Sources in Globular Clusters
Abstract
The twelve bright (Lx>10(36) erg/s) X-ray sources in the globular clusters have lower luminosities than the brightest sources in the bulge of our galaxy. The dim (Lx<10(35) erg/s) X-ray sources in globular clusters reach higher luminosities than the cataclysmic variables in the disk of our galaxy. The first difference is a statistical fluke, as comparison with M31 indicates. The second difference is explained because the brightest of the dim sources are not cataclysmic variables, but soft X-ray transients in quiescence. This article describes the BeppoSAX, ROSAT and first Chandra observations leading to these conclusions.
- Publication:
-
From X-ray Binaries to Gamma-Ray Bursts: Jan van Paradijs Memorial Symposium
- Pub Date:
- 2003
- DOI:
- 10.48550/arXiv.astro-ph/0111439
- arXiv:
- arXiv:astro-ph/0111439
- Bibcode:
- 2003ASPC..308..201V
- Keywords:
-
- Astrophysics
- E-Print:
- 10 pages, 5 figures, for pulbication in Jan van Paradijs Memorial Symposium ASP Conf.Ser., eds. Van den Heuvel, Kaper, Rol