The Monitor e Imageador de Raios-X (MIRAX) is a small (～250 kg) X-ray astronomy satellite mission designed to monitor the central Galactic plane for transient phenomena. With a field-of-view of ～1000 square degrees and an angular resolution of ～6 arcmin, MIRAX will provide an unprecedented discovery-space coverage to study X-ray variability in detail, from fast X-ray novae to long-term (～several months) variable phenomena. Chiefly among MIRAX science objectives is its capability of providing simultaneous complete temporal coverage of the evolution of a large number of accreting black holes, including a detailed characterization of the spectral state transitions in these systems. MIRAX's instruments will include a soft X-ray (2-18 keV) and two hard X-ray (10-200 keV) coded-aperture imagers, with sensitivities of ～5 and ～2.6 mCrab/day, respectively. The hard X-ray imagers will be built at the Instituto Nacional de Pesquisas Espaciais (INPE), Brazil, in close collaboration with the Center for Astrophysics & Space Sciences (CASS) of the University of California, San Diego (UCSD) and the Institut fur Astronomie und Astrophysik of the University of Tubingen (IAAT) in Germany; UCSD will provide the crossed-strip position-sensitive (0.5-mm spatial resolution) CdZnTe (CZT) hard X-ray detectors. The soft X-ray camera, provided by the Space Research Organization Netherlands (SRON), will be the spare flight unit of the Wide Field Cameras that flew on the Italian-Dutch satellite BeppoSAX. MIRAX is an approved mission of the Brazilian Space Agency (Agenda Espacial Brasileira -AEB) and is scheduled to be launched in 2011 in a low-altitude (～550 km) circular equatorial orbit. In this paper we present recent developments in the mission planning and design, as well as Monte Carlo simulations performed on the GEANT-based package MGGPOD environment (Weidenspointner et al. 2004) and new algorithms for image digital processing. Simulated images of the central Galactic plane as it would be seen by MIRAX are shown.
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机译：Monitor E Imageador de Raios-X（Mirax）是一个小（〜250公斤）的X射线天文卫星任务，旨在监测瞬态现象的中央银行飞机。对于〜600平方度的视野和角度分辨率，Mirax将提供前所未有的发现空间覆盖，以详细研究X射线可变性，从快速X射线Novae到长期（ 〜几个月）可变现象。主要是Mirax科学目标是其能够提供大量增强黑洞的演变的同时完全的时间覆盖，包括这些系统中的光谱状态转换的详细表征。 Mirax的仪器将包括软X射线（2-18 keV）和两个硬X射线（10-200keV）编码孔径成像器，分别具有〜5和〜2.6mcrab /天的敏感性。硬X-ray成像仪将在巴西的Instituto Nacional de Pesquisas Espaciais（Inpe）建造，与加州大学的Astrophysics＆Space Sciences（Cass），圣地亚哥（UCSD）和Institut密切合作德国大学（IAAT）的皮草天文untstrophysik; UCSD将提供交叉带位置敏感（0.5mm空间分辨率）CDZNTE（CZT）硬X射线探测器。由空间研究组织荷兰（Sron）提供的软X射线相机将是飞行在意大利荷兰卫星Bepposax上飞行的宽阔领域摄像机的备用飞行单位。 Mirax是巴西航天局（议程拍卖Brasileira -AEB）的批准使命，并计划在2011年在低空（〜550公里）圆形赤道轨道上。在本文中，我们在特派团规划和设计中提出了最新的发展，以及对基于Geant的包装MGGPod环境（WeidensPoint It Al.2004）和图像数字处理的新算法进行了蒙特卡罗模拟。显示了Mirax所见的中央银离平面的模拟图像。
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