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The Cosmic Infrared Background Experiment

James Bock·John Battle·Asantha Cooray·Mitsunobu Kawada·Brian Keating·Andrew Lange·Dae-Hea Lee·Toshio Matsumoto·Shuji Matsuura·Soojong Pak·Tom Renbarger·Ian Sullivan·Kohji Tsumura·Takehiko Wada·Toyoki Watabe
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Abstract

We are developing a rocket-borne instrument (the Cosmic Infrared Background ExpeRiment, or CIBER) to search for signatures of primordial galaxy formation in the cosmic near-infrared extra-galactic background. CIBER consists of a wide-field two-color camera, a low-resolution absolute spectrometer, and a high-resolution narrow-band imaging spectrometer. The cameras will search for spatial fluctuations in the background on angular scales from 7 arcseconds to 2 degrees over a range of angular scales poorly covered by previous experiments. CIBER will determine if the fluctuations reported by the IRTS arise from first-light galaxies or have a local origin. In a short rocket flight CIBER has sensitivity to probe fluctuations 100 times fainter than IRTS/DIRBE. By jointly observing regions of the sky studied by Spitzer and ASTRO-F, CIBER will build a multi-color view of the near-infrared background, accurately assessing the contribution of local (z = 1-3) galaxies to the observed background fluctuations, allowing a deep and comprehensive survey for first-light galaxy background fluctuations. The low-resolution spectrometer will search for a redshifted Lyman cutoff feature between 0.8 - 2.0 microns. The high-resolution spectrometer will trace zodiacal light using the intensity of scattered Fraunhofer lines, providing an independent measurement of the zodiacal emission and a new check of DIRBE zodiacal dust models. The combination will systematically search for the infrared excess background light reported in near-infrared DIRBE/IRTS data, compared with the small excess reported at optical wavelengths.

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James Bock, John Battle, Asantha Cooray, Mitsunobu Kawada, Brian Keating, Andrew Lange, Dae-Hea Lee, Toshio Matsumoto, Shuji Matsuura, Soojong Pak, Tom Renbarger, Ian Sullivan, Kohji Tsumura, Takehiko Wada, Toyoki Watabe. 2005-10-19. The Cosmic Infrared Background Experiment. https://doi.org/10.1016/j.newar.2005.11.034

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