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arXiv 1206.4702astro-ph.IMastro-ph.CO
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宇宙红外线背景实验(CIBER):宽视场成像仪

The Cosmic Infrared Background Experiment (CIBER): The Wide-Field Imagers

J. Bock, I. Sullivan, T. Arai, J. Battle, A. Cooray, V. Hristov, B. Keating, M. G. Kim, A. C. Lam, D. H. Lee, L. R. Levenson, P. Mason, T. Matsumoto, S. Matsuur… 展开作者

J. Bock, I. Sullivan, T. Arai, J. Battle, A. Cooray, V. Hristov, B. Keating, M. G. Kim, A. C. Lam, D. H. Lee, L. R. Levenson, P. Mason, T. Matsumoto, S. Matsuura, K. Mitchell-Wynne, U. W. Nam, T. Renbarger, J. Smidt, K. Suzuki, K. Tsumura, T. Wada, M. Zemcov

摘要:

我们已经开发并表征了一种成像仪器,用于测量漫射近红外河外背景光的空间特性,以寻找z > 6星系在再电离时期的波动。该仪器是宇宙红外背景实验的一部分,旨在观测亚轨道探空火箭飞行期间地球大气层上方的河外背景光。成像仪器包含一个2x2度的视野,以测量10弧分的空间功率谱的预测峰值上的波动,以及7“x7”像素,以去除低红移星系到足以将低红移星系团前景降低到仪器灵敏度以下的深度。成像仪器采用两台带通为Δλ/ λ~0.5的相机,中心分别为1.1和1.6微米,以光谱区分河外再电离背景涨落和局部前景涨落。CIBER在河外再电离背景的电磁波谱被认为达到峰值的波长处工作,并补充了AKARI和斯皮策在更长波长处的波动测量。我们在实验室中的仪器,包括测量的灵敏度,平场响应,杂散光性能,和噪声特性。在2009年2月首次飞行后,对仪器进行了几次修改。该仪器在2010年7月和2012年3月的后续飞行中表现良好,目前正在分析科学数据。

英文摘要:

We have developed and characterized an imaging instrument to measure the spatial properties of the diffuse near-infrared extragalactic background light in a search for fluctuations from z > 6 galaxies during the epoch of reionization. The instrument is part of the Cosmic Infrared Background Experiment (CIBER), designed to observe the extragalactic background light above the Earth's atmosphere during a suborbital sounding rocket flight. The imaging instrument incorporates a 2x2 degree field of view, to measure fluctuations over the predicted peak of the spatial power spectrum at 10 arcminutes, and 7"x7" pixels, to remove lower redshift galaxies to a depth sufficient to reduce the low-redshift galaxy clustering foreground below instrumental sensitivity. The imaging instrument employs two cameras with Δλ/ λ~0.5 bandpasses centered at 1.1 and 1.6 microns to spectrally discriminate reionization extragalactic background fluctuations from local foreground fluctuations. CIBER operates at wavelengths where the electromagnetic spectrum of the reionization extragalactic background is thought to peak, and complements fluctuations measurements by AKARI and Spitzer at longer wavelengths. We have characterized the instrument in the laboratory, including measurements of the sensitivity, flat-field response, stray light performance, and noise properties. Several modifications were made to the instrument following a first flight in 2009 February. The instrument performed to specifications in subsequent flights in 2010 July and 2012 March, and the scientific data are now being analyzed.

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。

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