Daniel J. Patnaude, Ralph P. Kraft, Caroline Kilbourne, Simon Bandler, Akos Bogdan, Renata Cumbee, Megan Eckart, Cecilia Garraffo, Edmund Hodges-Kluck, Richard Kelley, Maxim Markevitch, Anna Ogorzalek, Paul Plucinsky, Frederick Scott Porter, John ZuHone, Irina Zhuravleva, Jeremy Drake, Maurice Leutenegger, Steve Kenyon, Stephen Smith, Will Zhang, Steve DePalo, Xiaoyi Li, Nathan Williams, Edward Amatucci, Janice Houston, Deme Apostolou, Hugh Kanner, Kathleen Coderre, Isaac Hayden, Kyle Martin, Elizabeth Osborne, Jeffery Olson, Steven Ramm, Scott Richardson
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引用次数: 0
摘要
在2020年天体物理学十年调查中,美国国家科学院将宇宙反馈和结构形成确定为未来十年推动研究的关键问题。为响应这一建议,NASA发布了x射线和红外探测器级任务的呼吁,其成本上限为10亿美元。线发射成像仪(LEM)是响应这一呼吁而设计的任务概念。LEM是一种单仪器x射线望远镜,由一个焦距为4米的Wolter-Schwarzschild型I型x射线光学系统,加上一个30 '视场(FoV), 15″角分辨率和2.5 eV能量分辨率的x射线微热量计组成,其中有一个1.3 eV FWHM能量分辨率的中心子阵列。高通量x射线反射镜结合大视场和出色的能量分辨率,可以有效地映射从百万秒差距到亚pc尺度的扩展发射线主导的天体物理对象,以研究宇宙生态系统并揭示星系形成的物理驱动因素。
Line Emission Mapper: an X-ray probe mission concept to study the cosmic ecosystems and the physics of galaxy formation
In the 2020 Astrophysics Decadal Survey, the National Academies identified cosmic feedback and structure formation as a key question that should drive research in the upcoming decade. In response to this recommendation, NASA released a call for X-ray and IR probe-class missions, with a $1B cost cap. The line emission mapper (LEM) is a mission concept designed in response to this call. LEM is a single-instrument X-ray telescope that consists of a Wolter–Schwarzschild type I X-ray optic with a 4 m focal length, coupled with an X-ray microcalorimeter with a 30′ field of view (FoV), 15″ angular resolution, and 2.5 eV energy resolution [full-width half maximum (FWHM)], with a 1.3 eV FWHM energy resolution central subarray. The high throughput X-ray mirror combined with the large FoV and excellent energy resolution allows for efficient mapping of extended emission-line dominated astrophysical objects from megaparsecs to sub-pc scales to study cosmic ecosystems and unveil the physical drivers of galaxy formation.
期刊介绍:
The Journal of Astronomical Telescopes, Instruments, and Systems publishes peer-reviewed papers reporting on original research in the development, testing, and application of telescopes, instrumentation, techniques, and systems for ground- and space-based astronomy.