FINER: Far-Infrared Nebular Emission Receiver for the Large Millimeter Telescope
Abstract
Unveiling the emergence and prevalence of massive/bright galaxies during the epoch of reionization and beyond, within the first 600 million years of the Universe, stands as a pivotal pursuit in astronomy. Remarkable progress has been made by JWST in identifying an immense population of bright galaxies, which hints at exceptionally efficient galaxy assembly processes. However, the underlying physical mechanisms propelling their rapid growth remain unclear. With this in mind, millimeter and submillimeter-wave spectroscopic observations of redshifted far-infrared spectral lines, particularly the [O III] 88 micron and [C II] 158 micron lines, offers a crucial pathway to address this fundamental query. To this end, we develop a dual-polarization sideband-separating superconductor-insulator-superconductor (SIS) mixer receiver, FINER, for the Large Millimeter Telescope (LMT) situated in Mexico. Harnessing advancements from ALMA's wideband sensitivity upgrade (WSU) technology, FINER covers radio frequencies spanning 120-360 GHz, delivering an instantaneous intermediate frequency (IF) of 3-21 GHz per sideband per polarization, which is followed by a set of 10.24 GHz-wide digital spectrometers. At 40% of ALMA's light-collecting area, the LMT's similar atmospheric transmittance and FINER's 5 times wider bandwidth compared to ALMA culminate in an unparalleled spectral scanning capability in the northern hemisphere, paving the way for finer spectral-resolution detection of distant galaxies.
Cite
@article{arxiv.2406.07975,
title = {FINER: Far-Infrared Nebular Emission Receiver for the Large Millimeter Telescope},
author = {Yoichi Tamura and Takeshi Sakai and Ryohei Kawabe and Takafumi Kojima and Akio Taniguchi and Tatsuya Takekoshi and Haoran Kang and Wenlei Shan and Masato Hagimoto and Norika Okauchi and Airi Tetsuka and Akio K. Inoue and Kotaro Kohno and Kunihiko Tanaka and Tom J. L. C. Bakx and Yoshinobu Fudamoto and Kazuyuki Fujita and Yuichi Harikane and Takuya Hashimoto and Bunyo Hatsukade and David H. Hughes and Takahiro Iino and Yuki Kimura and Hiroyuki Maezawa and Yuichi Matsuda and Ken Mawatari and Taku Nakajima and Shunichi Nakatsubo and Tai Oshima and Hideo Sagawa and F. Peter Schloerb and Shigeru Takahashi and Kotomi Taniguchi and Akiyoshi Tsujita and Hideki Umehata and Teppei Yonetsu and Min S. Yun},
journal= {arXiv preprint arXiv:2406.07975},
year = {2024}
}
Comments
12 pages, 8 figures, and 3 tables. Proceedings paper presented in SPIE Astronomical Telescope and Instrumentation 2024