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An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy

Cenko, S. B.; Sánchez-Ramírez, R.; Cooper, M. C. +60 more

Variable x-ray and γ-ray emission is characteristic of the most extreme physical processes in the universe. We present multiwavelength observations of a unique γ-ray-selected transient detected by the Swift satellite, accompanied by bright emission across the electromagnetic spectrum, and whose properties are unlike any previously observed source.…