Gamma-ray monitor assesses sensitivity to transient sources in low radiation environments, indicating potential for extensive astrophysical observations.
The Crystal Eye detector is an all-sky space-borne gamma-ray monitor intended to cover the energy range between 30 keV – 50 MeV, a region currently lacking of extensive observations and monitoring. Operational environment of the detector is an important factor to determine the optimum detector design and to estimate its scientific potential. Given the orbital parameters of this potential future mission to be at the altitude of ∼ 550 km and near the equatorial region with an inclination of about 20° — away from the polar region which is more hostile in terms of radiation background — we studied the response of the Crystal Eye detector in this particle and radiation background environment, in detail, using the Geant4 Monte Carlo simulation toolkit. The effective area is calculated for gamma-ray sources, and used to estimate the detector sensitivity to transient sources. A method to estimate the online transient-localization performance of the detector is also developed and discussed.
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Sarkar et al. (2025) studied this question.
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