Telescope performance and image simulations of the balloon-borne coded-mask protoMIRAX experiment

8th International Workshop on Hadron Physics

Penacchioni, A.V.^1 ; Braga, J.^1 ; Castro Avila, M.A.^1 ; Amico, F.D.^1

Instituto Nacional de Pesquisas Espaciais (INPE), Av. dos Astronautas, São José dos Campos, SP

1758, Brazil^1

关键词: Angular dependence;    Balloon experiment;    Galactic centres;    Hard X-ray sources;    Image simulations;    Imaging simulation;    Satellite mission;    Telescope performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/706/5/052001/pdf
DOI  :  10.1088/1742-6596/706/5/052001

来源: IOP

【 摘 要 】

In this work we present the results of imaging simulations performed with the help of the GEANT4 package for the protoMIRAX hard X-ray balloon experiment. The instrumental background was simulated taking into account the various radiation components and their angular dependence, as well as a detailed mass model of the experiment. We modelled the meridian transits of the Crab Nebula and the Galactic Centre (GC) region during balloon flights in Brazil (23° of latitude and 40 km of altitude) and introduced the correspondent spectra as inputs to the imaging simulations. We present images of the Crab and of three sources in the GC region: IE 1740.7-2942, GRS 1758-258 and GX 1+4. The results show that the protoMIRAX experiment is capable of making spectral and timing observations of bright hard X-ray sources as well as important imaging demonstrations that will contribute to the design of the MIRAX satellite mission.