On 11 August, the CTAO LST Collaboration and the MAGIC Collaboration released remarkable findings from observations of OP 313, the most distant very high-energy blazar ever recorded. The paper, published in the journal Astronomy & Astrophysics , presents in-depth observations conducted with the prototype Large-Sized Telescope (LST-1) and the MAGIC telescopes at the Roque de los Muchachos Observatory in La Palma, Spain. This comprehensive study follows the discovery of the source at very high energies by the LST-1 in December 2023, announced, at that time, via an Astronomer's Telegram (ATel)
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