标题： SVOM任务上ECLAIRs望远镜对伽马射线暴探测的模拟研究 显示英文标题

标题： Simulations of GRB detections with the ECLAIRs telescope onboard the future SVOM mission

摘要： 软伽马射线望远镜ECLAIRs与其科学触发单元负责未来SVOM卫星上伽马射线暴（GRB）的探测任务。 通过使用“科学软件模型”（SSM），我们研究了两种已实现的触发算法的效率：时间尺度小于20秒的计数率触发和较大时间尺度上的图像触发。 SSM提供了ECLAIRs的模拟，并通过编码掩模投影到检测平面。 我们基于费米GBM仪器检测到的GRB光变曲线开发了SSM的输入GRB数据库。 我们将GRB能谱外推到ECLAIRs波段（4-120 keV），并将其投影到检测平面上，叠加宇宙学背景光子（CXB）。 通过改变GRB属性（通量和视场中的位置），进行了多次模拟。 本文介绍了这项研究的一些初步结果。 显示英文摘要

摘要： The soft gamma-ray telescope ECLAIRs with its Scientific Trigger Unit is in charge of detecting Gamma-Ray Bursts (GRBs) on-board the future SVOM satellite. Using the "scientific software model" (SSM), we study the efficiency of both implemented trigger algorithms, the Count-Rate Trigger for time-scales below 20s and the Image Trigger for larger ones. The SMM provides a simulation of ECLAIRs with photon projection through the coded-mask onto the detection plane. We developed an input GRB database for the SSM based on GRBs light curves detected by the Fermi GBM instrument. We extrapolated the GRB spectra into the ECLAIRs band (4-120 keV) and projected them onto the detection plane, superimposed with cosmic extragalactic background photons (CXB). Several simulations were performed by varying the GRB properties (fluxes and positions in the field of view). We present first results of this study in this paper.