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DESHIMA 2.0: development of an integrated superconducting spectrometer for science-grade astronomical observations

by Anne-Kee Doing , Paul P van der Werf , Endo, Akira , Gouwerok, Matthijs , Rybak, Matus , Huiting, Robert , Kitayama, Tetsu , Bueno, Juan , Llombart, Nuria , Ishii, Shun , Dabironezare, Shahab , Oshima, Tai , Yates, Stephen J C , Taniguchi, Akio , Baselmans, Jochem J A , Tom J L C Bakx , Thoen, David J , Kohno, Kotaro , Kouchi, Akira , Nakatsubo, Shunichi , Hähnle, Sebastian , Karatsu, Kenichi , Fujita, Kazuyuki , Kawabe, Ryohei , Akamatsu, Hiroki , Murugesan, Vignesh , Ishida, Tsuyoshi , Fujii, Yasunori , Buijtendorp, Bruno T , Brackenhoff, Stefanie , Matsuda, Keiichi , Tamura, Yoichi , Takekoshi, Tatsuya , Alejandro Pascual Laguna , Maekawa, Jun

in Astronomy / Celestial bodies / Cosmic dust / Galactic evolution / Millimeter waves / Red shift / Spectroscopy / Spectrum analysis / Star & galaxy formation / Star formation / Stellar evolution / Superconductivity / Ultrawideband

2022

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DESHIMA 2.0: development of an integrated superconducting spectrometer for science-grade astronomical observations

2022

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2022

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Paper

DESHIMA 2.0: development of an integrated superconducting spectrometer for science-grade astronomical observations

Anne-Kee Doing,

Paul P van der Werf,

Endo, Akira,

Gouwerok, Matthijs,

Rybak, Matus,

Huiting, Robert,

Kitayama, Tetsu,

Bueno, Juan,

Llombart, Nuria,

Ishii, Shun,

Dabironezare, Shahab,

Oshima, Tai,

Yates, Stephen J C,

Taniguchi, Akio,

Baselmans, Jochem J A,

Tom J L C Bakx,

Thoen, David J,

Kohno, Kotaro,

Kouchi, Akira,

Nakatsubo, Shunichi,

Hähnle, Sebastian,

Karatsu, Kenichi,

Fujita, Kazuyuki,

Kawabe, Ryohei,

Akamatsu, Hiroki,

Murugesan, Vignesh,

Ishida, Tsuyoshi,

Fujii, Yasunori,

Buijtendorp, Bruno T,

Brackenhoff, Stefanie,

Matsuda, Keiichi,

Tamura, Yoichi,

Takekoshi, Tatsuya,

Alejandro Pascual Laguna,

Maekawa, Jun

2022

Overview

Integrated superconducting spectrometer (ISS) technology will enable ultra-wideband, integral-field spectroscopy for (sub)millimeter-wave astronomy, in particular, for uncovering the dust-obscured cosmic star formation and galaxy evolution over cosmic time. Here we present the development of DESHIMA 2.0, an ISS for ultra-wideband spectroscopy toward high-redshift galaxies. DESHIMA 2.0 is designed to observe the 220-440 GHz band in a single shot, corresponding to a redshift range of \\(z\\)=3.3-7.6 for the ionized carbon emission ([C II] 158 \\(\\mu\\)m). The first-light experiment of DESHIMA 1.0, using the 332-377 GHz band, has shown an excellent agreement among the on-sky measurements, the lab measurements, and the design. As a successor to DESHIMA 1.0, we plan the commissioning and the scientific observation campaign of DESHIMA 2.0 on the ASTE 10-m telescope in 2023. Ongoing upgrades for the full octave-bandwidth system include the wideband 347-channel chip design and the wideband quasi-optical system. For efficient measurements, we also develop the observation strategy using the mechanical fast sky-position chopper and the sky-noise removal technique based on a novel data-scientific approach. In the paper, we show the recent status of the upgrades and the plans for the scientific observation campaign.

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Cornell University Library, arXiv.org

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