Broadband continuum sensitivity (ΔE = E/ 2) of the different instruments on board INTEGRAL as a function of energy for a detection of an on-axis source at 3σ confidence level during the time interval spanning from a minimum of T0−30 s to a maximum of T0 + 287 s (depending on instrument). The dashed lines correspond to the case in which the source to be detected is characterized by a power-law shaped spectrum with a photon index of − 2 and an X-ray flux below 100 keV equal to 1 Crab, 100 mCrab, and 10 mCrab.
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