New 50-m-class single-dish telescope: Large Submillimeter Telescope (LST)

Ryohei Kawabe; Kotaro Kohno; Yoichi Tamura; Tatsuya Takekoshi; Tai Oshima; Shun Ishii

doi:10.1117/12.2232202

8 August 2016 New 50-m-class single-dish telescope: Large Submillimeter Telescope (LST)

Ryohei Kawabe, Kotaro Kohno, Yoichi Tamura, Tatsuya Takekoshi, Tai Oshima, Shun Ishii

Proceedings Volume 9906, Ground-based and Airborne Telescopes VI; 990626 (2016) https://doi.org/10.1117/12.2232202
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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).

Citation Download Citation

Ryohei Kawabe, Kotaro Kohno, Yoichi Tamura, Tatsuya Takekoshi, Tai Oshima, and Shun Ishii "New 50-m-class single-dish telescope: Large Submillimeter Telescope (LST)", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990626 (8 August 2016); https://doi.org/10.1117/12.2232202

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