HESS J1804-216
[References]
HESS: Aharonian, F. et al., Science, 307, 1938-1942 (2005) Aharonian, F. et al., Ap. J. 636, 777-797 (2006)
CANGAROO-III: Higashi, Y. et al., ApJ 683, 957-966 (2008)