Table 4
GC upper limits.
| GC | Counts(1) | Excess rate(2) | UL  |
| name | (10-3 s-1) | (10-13 erg cm-2 s-1) | |
|
|
|||
| Rings 1–5 | |||
| M 62 | 13392 | 9.29 | 1.1 |
| NGC 6388 | 3749 | 6.85 | 0.89 |
| NGC 6541 | 6681 | 9.10 | 1.1 |
| M 28 | 49219 | 7.80 | 0.96 |
| M 80 | 2591 | 5.24 | 0.63 |
| NGC 6139 | 2197 | 13.0 | 1.7 |
|
|
|||
| Rings 0–5 | |||
| M 62 | 14502 | 9.67 | 1.2 |
| NGC 6388 | 4121 | 7.18 | 0.93 |
| NGC 6541 | 7385 | 9.60 | 1.2 |
| M 28 | 55262 | 8.28 | 1.0 |
| M 80 | 2876 | 5.52 | 0.66 |
| NGC 6139 | 2386 | 13.5 | 1.7 |
Notes. (1) Total number of counts in the inner five (top section) and inner six (bottom section) rings, respectively. (2) Required excess rate for a 5σ detection. (3) Flux upper limit (1–7 keV). Note that these upper limits on the flux are not yet corrected for the coverage fraction, but the luminosity upper limits quoted in Table 5 are.
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