2月18日（火）13:30～15:00 太陽系小天体セミナー 南棟２階会議室
Feb 18 Wed Solar System Minor Body Seminar Conference Room, South Bldg.2F
2月18日（火）16:00～17:00 談話会 講義室
Feb 18 Wed NAOJ Seminar Lecture Room
2月19日（水）10:30～12:00 総研大コロキウム 講義室
Feb 19 Wed SOKENDAI colloquium Lecture Room
2月21日（金）13:30～ NAOJ Science Colloquium 開発棟３号館３階会議室
Feb 21 Fri NAOJ Science Colloquium Conference Room, Instrument Development Bldg. 3 3F
2月21日（金）13:30～15:00 太陽天体プラズマセミナー すばる棟院生セミナー室
Feb 21 Fri Solar and Space Plasma Seminar Student Seminar Room, Subaru Bldg.
詳細は以下をご覧下さい。
2月18日（火）
- キャンパス
- 三鷹
- セミナー名
- 太陽系小天体セミナー
- 定例・臨時の別
- 定例
- 日時
- 2月18日（火曜日）13時30分～15時
- 場所
- 南棟２階会議室
- 講演者
- 土屋智恵
- 連絡先
- 名前：渡部潤一
- 備考
- テレビ会議またはスカイプによる参加も可
2月18日（火）
- Campus
- Mitaka
- Seminar
- NAOJ seminar
- Regularly Scheduled/Sporadic
- Scheduled
- Date and time
- Friday, Tue 18 16:00-17:00
- Place
- Lecture Room
- Speaker
- Victoria Meadows
- Affiliation
- University of Washington
- Title
- Characterizing Terrestrial Exoplanets for Habitability and Life
- Abstract
- One of the most exciting and interdisciplinary frontiers in exoplanet science is the search for habitable planets and life beyond the solar system. Recently discovered planets, especially Earth-sized planets orbiting nearby M dwarfs, will provide intriguing near-term targets for large ground-based telescopes and the James Webb Space Telescope. In the longer term, even larger telescopes are planned to directly image and explore the environments of worlds around stars like our Sun. These telescopes may detect signs of planetary habitability, or its past loss?as well as biosignatures?planetary features that suggest a biological origin. However, our ability to accurately interpret these features will depend on our understanding of planetary evolution and processes, and environmental context. This talk will provide an overview of the path to terrestrial exoplanet characterization, describing interdisciplinary research by NASA’s Virtual Planetary Laboratory team to understand how to identify habitable planets, and discriminate true signs of life from planetary processes that may mimic them. The prospects for terrestrial exoplanet characterization and life detection with JWST and other future telescopes will also be discussed.
- Facilitator
- -Name：Kataoka, Akimasa
2月19日（水）
- Campus
- Mitaka
- Seminar
- SOKENDAI colloquium
- Regularly Scheduled/Sporadic
- Regular
- Date and time
- Feburuary 19th, 2020, 10:30-12:00
- Place
- Lecture Room
- Speaker
- Takaharu Sisido
- Affiliation
- SOKENDAI 3rd year (D1) (Supervisor: Takayuki Tomaru, Yoichi Aso, Ryutaro Takahashi)
- Title
- The thermal conductivity measurement for sapphire and SI fiber
- Speaker
- Umi Kobayashi
- Affiliation
- SOKENDAI 1st year (M1) (Supervisor: Masayuki Tanaka, Masatoshi Imanishi, Kouichiro Nakanishi)
- Title
- TBD
- Facilitator
- -Name： Kei Ito
2月19日（水）
- Campus
- Mitaka
- Seminar
- NAOJ Science Colloquium
- Regularly Scheduled/Sporadic
- Regularly Scheduled Date and time：Feb 19 (Wed) 13:30-
- Place
- Conference Room, Instrument Development Bldg. 3 3F
- Speaker
- Shin Toriumi
- Affiliation
- ISAS/JAXA
- Title
- Radiative MHD Modeling of Flare-productive Sunspots
- Abstract
- Observations revealed that the solar flares, especially the strongest events in history, emanate from complex-shaped sunspot regions. However, it has been extremely difficult to investigate the formation process of sunspots because we cannot optically observe the subsurface layer of the Sun, where magnetic fields rise and build up sunspots on the photosphere. In this study, for the first time, we succeed in simulating the entire process, in which a subsurface magnetic flux tube is elevated by the turbulent background convection and spontaneously forms complex sunspots. We find that the sunspots have a “delta” configuration (the most eruptive category of sunspots) with a strong magnetic shear and helical flux rope structure, all off which are consistent with the observations of flare-productive regions. In this talk, we discuss the key roles of turbulent convection in producing such violent sunspots.
- Facilitator
- -Name：Akimasa Kataoka
2月21日（金）
- Campus
- Mitaka
- Seminar
- Solar and Space Plasma Seminar
- Regularly Scheduled/Sporadic
- Regular
- Date and time
- 21 February (Fri), 13:30-15:00
- Place
- Student Seminar Room, Subaru Bldg.
- Speaker
- Shinsuke Takasao
- Affiliation
- NAOJ
- Title
- Applications of solar physics to studies of stellar and protostellar magnetic activities
- Abstract
- Our understanding of astrophysical plasma physics has been greatly advanced through the studies of the Sun. Many magnetohydrodynamical processes have been found/examined/confirmed both observationally and theoretically. Recently, magnetic activities in other systems have received growing attention thanks to the development of observational instruments. However, since the understanding of MHD in those systems have not been studied as deeply as in the solar physics, many phenomena remain unresolved. Now is the time to apply the solar physics to new phenomena found in other systems. In this talk, I will show some application examples of the solar physics to studies of stellar and protostellar magnetic activities. Coronal heating theories are applied to understand the solar-stellar coronal similarity. Understanding of solar flares is applied to reveal the origin of huge protostellar flares. I will discuss my future plan on how the solar physics can be advanced further in the context of astrophysics.
- Facilitator
- -Name：Munehito Shoda