arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1508.02427astro-ph.IM
收藏

James Webb Space Telescope、IX的中红外仪器:预测灵敏度

The Mid-Infrared Instrument for the James Webb Space Telescope, IX: Predicted Sensitivity

Alistair Glasse, G. H. Rieke, E. Bauwens, Macarena Garcıa-Marın, M. E. Ressler, Steffen Rost, T. V. Tikkanen, B. Vandenbussche, G. S. Wright

摘要:

我们提出了一个估计的性能,将实现在在轨操作的JWST中红外仪器,MIRI。根据子系统和仪器级测试的测量结果,介绍了主成像仪和光谱仪系统从天文目标探测光子的效率,并详细讨论了端到端传输预算。提供了可以在不使探测器饱和的情况下测量的最亮的目标通量。微弱源的长时间观测的灵敏度以在10,000秒观测后达到10的信噪比所需的目标通量表示。介绍了灵敏度模型中使用的算法,包括在MIRI飞行模型和飞行探测器测试过程中获得的理解。

英文摘要:

We present an estimate of the performance that will be achieved during on orbit operations of the JWST Mid Infrared Instrument, MIRI. The efficiency of the main imager and spectrometer systems in detecting photons from an astronomical target are presented, based on measurements at sub-system and instrument level testing, with the end-to-end transmission budget discussed in some detail. The brightest target fluxes that can be measured without saturating the detectors are provided. The sensitivity for long duration observations of faint sources is presented in terms of the target flux required to achieve a signal to noise ratio of 10 after a 10,000 second observation. The algorithms used in the sensitivity model are presented, including the understanding gained during testing of the MIRI Flight Model and flight-like detectors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑