Fast, very high-energy gamma-ray flare detected from the blazar BL Lacertae

Using Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes, an international group of astronomers has detected a fast, very high-energy (VHE) flare from the blazar BL Lacertae. The finding is detailed in a paper published January 7 on the arXiv pre-print repository.