Fig. 2: Light curves from INTEGRAL satellite observations.
From: Evidence of an upper ionospheric electric field perturbation correlated with a gamma ray burst
Time profile of GRB221009A detected by INTEGRAL, scaled for background. The red curve shows the SPI/ACS count rate on 1s time-bin plotted in erg/cm2/s in the energy range 75-1000 keV; the black curve shows the IBIS/PICsIT data in the energy range 0.25–2.60 MeV. The differences between the two light curves are due to: i) difference in computing the two energy bands, ii) statistical fluctuations (IBIS/PICSiT is less sensitive in this case because of the partial shield absorption to low energy photons), iii) instrument saturation and/or telemetry loss due to the exceptionally strong photon flux from GRB221009A.
