DESHIMA 2.0: development of an integrated superconducting spectrometer for science-grade astronomical observations
Abstract
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 =3.3-7.6 for the ionized carbon emission ([C II] 158 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.
Keywords
Cite
@article{arxiv.2110.14656,
title = {DESHIMA 2.0: development of an integrated superconducting spectrometer for science-grade astronomical observations},
author = {Akio Taniguchi and Tom J. L. C. Bakx and Jochem J. A. Baselmans and Robert Huiting and Kenichi Karatsu and Nuria Llombart and Matus Rybak and Tatsuya Takekoshi and Yoichi Tamura and Hiroki Akamatsu and Stefanie Brackenhoff and Juan Bueno and Bruno T. Buijtendorp and Shahab Dabironezare and Anne-Kee Doing and Yasunori Fujii and Kazuyuki Fujita and Matthijs Gouwerok and Sebastian Hähnle and Tsuyoshi Ishida and Shun Ishii and Ryohei Kawabe and Tetsu Kitayama and Kotaro Kohno and Akira Kouchi and Jun Maekawa and Keiichi Matsuda and Vignesh Murugesan and Shunichi Nakatsubo and Tai Oshima and Alejandro Pascual Laguna and David J. Thoen and Paul P. van der Werf and Stephen J. C. Yates and Akira Endo},
journal= {arXiv preprint arXiv:2110.14656},
year = {2022}
}
Comments
9 pages, 4 figures, 1 table, accepted for publication in the Journal of Low Temperature Physics for the LTD19 special issue