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Proceedings Paper

New 50-m-class single-dish telescope: Large Submillimeter Telescope (LST)
Author(s): Ryohei Kawabe; Kotaro Kohno; Yoichi Tamura; Tatsuya Takekoshi; Tai Oshima; Shun Ishii
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Paper Abstract

We report on a plan to construct a 50-m-class single-dish telescope, the Large Submillimeter Telescope (LST). The conceptual design and key science behind the LST are presented, together with its tentative specifications. This telescope is optimized for wide-area imaging and spectroscopic surveys in the 70-420 GHz frequency range, which spans the main atmospheric windows at millimeter and submillimeter wavelengths for good observation sites such as the Atacama Large Millimeter/submillimeter Array (ALMA) site in Chile. We also target observations at higher frequencies of up to 1 THz, using an inner high-precision surface. Active surface control is required in order to correct gravitational and thermal deformations of the surface, and will be useful for correction of the wind-load deformation. The LST will facilitate new discovery spaces such as wide-field imaging with both continuum and spectral lines, along with new developments for time-domain science. Through exploitation of its synergy with ALMA and other telescopes, the LST will contribute to research on a wide range of topics in the fields of astronomy and astrophysics, e.g., astrochemistry, star formation in our Galaxy and galaxies, the evolution of galaxy clusters via the Sunyaev-Zel'dovich (SZ) effect, the search for transients such as γ-ray burst reverse shocks produced during the epoch of re-ionization, electromagnetic follow up of detected gravitational wave sources, and examination of general relativity in the vicinity of super massive black holes via submillimeter very-long-baseline interferometry (VLBI).

Paper Details

Date Published: 8 August 2016
PDF: 12 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990626 (8 August 2016); doi: 10.1117/12.2232202
Show Author Affiliations
Ryohei Kawabe, National Astronomical Observatory of Japan (Japan)
Kotaro Kohno, The Univ. of Tokyo (Japan)
Yoichi Tamura, The Univ. of Tokyo (Japan)
Tatsuya Takekoshi, National Astronomical Observatory of Japan (Japan)
Tai Oshima, National Astronomical Observatory of Japan (Japan)
Shun Ishii, The Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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