Spectral lags as a new window on GeV–TeV emission and particle acceleration in ultra‑relativistic jets

Organisé par

IN2P3

Spectral lags are time delays between emission peaks observed at different photon energies in the same high‑energy transient or variable source. In simple terms, they quantify the fact that “hard” (high‑energy) and “soft” (low‑energy) photons do not always arrive at exactly the same time, and thus provide a direct handle on how emission regions evolve and how particles are accelerated and cooled i

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