ROSAT Observations of Nine Globular Clusters

The ROSAT HRI was used to image fields around nine Galactic globular clusters that have central densities in the range of 10⁴-10⁵ M_sun pc^-3 and that had not previously been observed with the Einstein Observatory. We detected X-ray sources associated with Pal 2 and NGC 6304 with luminosities of 1.1 × 10³⁴ ergs s^-1 and 1.2 × 10³³ ergs s^-1, respectively. No X-ray emission was detected from the source in Ter 6, thus confirming its transient nature. In all, there were 23 serendipitous sources found in the nine fields; none was apparently associated with any of the other seven clusters. The results are discussed in the context of low-luminosity cluster X-ray sources, in general.