Table 5
Integral flux upper limits on various observed objects.
| Name | Type | Obs. Time h | Eth TeV | Upper limit 10−12 cm−2 s−1 | References |
|---|---|---|---|---|---|
| NGC 4945 | Starburst/Seyfert 2 | 8.7 | 0.24 | 1.38 | |
| NGC 1068 | Starburst/Seyfert 2 | 48.9 | 0.21 | 1.18 | 1 |
| Hydra A | Galaxy cluster | 21.2 | 0.19 | 1.97 | 2 |
| Fornax A | Galaxy cluster | 11.5 | 0.20 | 0.80 | 3 |
| Arp 220 | Starburst/Seyfert | 36.3 | 0.48 | 0.39 | 4 |
| Abell 3376 | Galaxy cluster | 7.4 | 0.22 | 1.78 | |
| Abell 3667 | Galaxy cluster | 5.4 | 0.29 | 1.63 | |
| Abell 496 | Galaxy cluster | 14.6 | 0.23 | 0.93 | 5 |
| Abell 85 | Galaxy cluster | 39.0 | 0.20 | 1.00 | 6 |
Notes. The names and types of the objects are given, followed by the H.E.S.S. observation times in the third column, the achieved energy thresholds Eth, and the Integral upper limits at a 95% CL (above Eth). The last column provides references for previous results. The Galaxy cluster Coma (Aharonian et al. 2009c) is part of the HEGS dataset but due to its size, a point-like upper limit cannot be reported. References: (1) Acciari et al. (2019); (2) Abramowski et al. (2012a), (3) Abramowski et al. (2012c); (4) Albert et al. (2007); (5) Aharonian et al. (2009b); (6) Aharonian et al. (2009b).
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