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| BL Lacertae objects: individual (1ES 1727+502) (1) |
| Crab nebula (1) |
| FERMI ERA (1) |
| Galactic nuclei (1) |
| Galaxies: active (1) |
| Gamma rays: galaxies (1) |
| Host galaxies (1) |
| Lacertae objects (1) |
| Large area telescope (1) |
| Physics (1) |