Crab Nebula flux and photon index from the 1 s ratemeters

The expected on-axis Crab flux in the GRBM and AC 1s ratemeters bands have been calculated by convolving the canonical Crab Nebula spectrum reported above with the detectors on-axis efficiencies as a function of energy (section 3.3.1). In Tab. 4.1 we report for each LS and each band the expected count fluxes, the measured count fluxes and the photon indices inferred from the ratio of the GRBM and AC counts. As can be seen, the measured flux values are consistent with the expected ones, and the photon index and 100 keV flux values are consistent with the hard X-rays values measured in other experiments and discussed above.

 

 

Detector Band Exp. counts/s Meas. counts/s Ph. Index Flux(100 keV)

$$\pm \pm \pm \pm$$ LS1 GRBM

$$\pm \pm$$ LS1 AC

$$\pm \pm \pm \pm$$ LS3 GRBM

$$\pm \pm$$ LS3 AC