近、中红外探测半导体激光器的基本极限
Fundamental Limits of Detection of Galaxies in the Near and Mid Infrared
摘要:
詹姆斯·韦伯太空望远镜的建造引起了人们对红外天文学和宇宙学的关注。通过这次任务和未来的红外望远镜获得的关于我们宇宙的潜在信息是惊人的,但红外观测面临着许多障碍。这些望远镜面临着许多现象产生的大量噪声,从反射镜的辐射到宇宙红外背景。红外望远镜的设计需要使噪声最小化,以在高红移物体上获得足够的信噪比。我们将调查目前和计划中的太空和地面望远镜,模拟它们遇到的噪音,并发现它们的局限性。我们的研究的最终目的是比较这些任务在近红外和中红外的敏感性,并提出新的任务。我们的调查分为四个主要部分:当前的任务,噪音,信号和拟议的任务。在拟议的任务部分,我们调查了历史和当前的红外望远镜,并注意到它们的位置和属性。噪声部分讨论了红外望远镜将遇到的噪声,并设置了背景限制。信号部分将研究我们宇宙中一些重要物体的光谱能量分布(SED)。我们将计算地球上和轨道上不同点的物体强度。在最后一节中,我们使用我们在信号和噪声部分中的发现来模拟各种任务的积分时间(观察时间),以实现给定的信噪比(SNR)。
英文摘要:
The construction of the James Webb Space Telescope has brought attention to infrared astronomy and cosmology. The potential information about our universe to be gained by this mission and future infrared telescopes is staggering, but infrared observation faces many obstacles. These telescopes face large amounts of noise by many phenomena, from emission off of the mirrors to the cosmic infrared background. Infrared telescopes need to be designed in such a way that noise is minimized to achieve sufficient signal to noise ratio on high redshift objects. We will investigate current and planned space and ground based telescopes, model the noise they encounter, and discover their limitations. The ultimate of our investigation is to compare the sensitivity of these missions in the near and mid IR and to propose new missions. Our investigation is broken down into four major sections: current missions, noise, signal, and proposed missions. In the proposed missions section we investigate historical and current infrared telescopes with attention given to their location and properties. The noise section discusses the noise that an infrared telescope will encounter and set the background limit. The signal section will look at the spectral energy distributions (SED) of a few significant objects in our universe. We will calculate the intensity of the objects at various points on Earth and in orbit. In the final section we use our findings in the signal and noise sections to model integration times (observation time) for a variety of missions to achieve a given signal to noise ratio (SNR).
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。