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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) |