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東京大学・天文学教育研究センターでは2003年4月から談話会を開いています。
第一線で活躍されている研究者の方々を講師にお招きし、最先端の研究成果をお話しいただきます。
講師の方には、大学院生の参加者のことも考慮し、レビュー的な側面も含めた上で、ご自身の研究紹介をお願いしています。
なお、当談話会は天文学研究者・学生を対象に大学・大学院での
専門的な研究と教育を目的として開催されています。
一般の方は公開講座・講演会などにご参加いただければ幸いです。
ML: semiadm _at_ ioa.s.u-tokyo.ac.jp
please replace _at_ with @
Language: English
Abstract: The Large Millimeter Telescope (LMT) Alfonso Serrano is a bi-national (Mexico and USA) telescope facility constructed on the summit of Sierra Negra, at an altitude of 4600m, in the Mexican state of Puebla. The LMT is a 50-m diameter single-dish radio-telescope designed, constructed and optimized to conduct scientific observations using heterodyne and continuum receivers, as well as VLBI observations, at frequencies between ~70 and 350 GHz. The LMT has an active surface control-system to correct gravitational and thermal deformations of the primary reflector to enable both night-time and daytime observations. We describe the current status and technical performance of the LMT, the instrumentation development program, and an on-going series of engineering and technical upgrades that will increase the optical efficiency and sensitivity of the telescope which will improve the overall scientific productivity and operational efficiency of the LMT.
Language: English
Abstract: External environmental conditions lead to thermal deformations of the primary reflector of the 50-m diameter Large Millimeter Telescope Alfonso Serrano (LMT). This talk describes efforts to improve the night-time performance of the telescope at millimeter-wavelengths and allow extension of scientific observations into daylight hours, using the LMT's active surface to counteract the effects of thermal gradients within the antenna structure. Several approaches to stabilizing the LMT’s thermal behavior will be described, including operation of a ventilation system in the antenna backup structure and a real-time metrology system to measure and correct large-scale, thermally induced, surface deformations.
| # | Date | Speaker | Title | Chair |
| 417(臨時) | 2024年6月19日(水) 13:30-14:00 | David H. Hughes (Instituto Nacional de Astrofísica, Óptica y Electrónica) | The Large Millimeter Telescope (LMT) Alfonso Serrano: current status and future upgrades | TBD |
| 418(臨時) | 2024年6月19日(水) 14:00-14:30 | F. Peter Schloerb (Univ. of Massachusetts Amherst) | Thermal stabilization of the Large Millimeter Telescope | TBD |
| 419 | 2024年6月25日火) 11:00-12:00 | Meghan Dorn (Teledyne Scientific & Imaging) | Teledyne Imaging Sensors Infrared FPAs for Astronomy & Earth Observation | I.Sakon |
| 420 | 2024年6月25日(火) 16:00-17:00 | James W. Beletic (Teledyne Scientific & Imaging) | The James Webb Space Telescope (JWST) - Humankind’s greatest space science facility | TBA |
| 421 | 2024年8月5日(月) 15:30-16:30 | 郡和範 (国立天文台科学研究部) | ダークマター・ダークエネルギーの正体を暴く天文観測 | I.Sakon |
詳細はこちら: 令和6(2024)年度談話会
| # | Date | Speaker | Title | Chair |
| 416 | 2024年6月13日(木) 15:30-16:30 | 服部公平 (統計数理研究所/国立天文台) | Dynamics and chemistry of the Milky Way revealed from Gaia data | I. Sakon |
| 415 | 2024年6月6日(木) 15:30-16:30 | Jong-Hak Woo (Seoul National University) | Understanding black hole engine based on time-domain studies | K. Morokuma |
| 414 | 2024年5月16日(木) 15:30-16:30 | Kana Morokuma (Institute of Astronomy, University of Tokyo) | Galaxy evolution in overdense environments | I. Sakon |
