12月3日（月）13：30～15：00 太陽天体プラズマセミナー 中央棟(北)113号室
Dec 3 Mon Solar and Space Plasma Seminar Room 113, Central Building (North)
12月4日（火）13：30～15：00 太陽系小天体セミナー 南棟２階会議室
Dec 4 Tue Solar System Minor Body Seminar Conference Room, South Bldg.2F
12月5日（水）10：30～12：00 総研大コロキウム 講義室
Dec 5 Wed SOKENDAI colloquium Lecture Room
12月7日（金）13：30～15：00 太陽天体プラズマセミナー 院生セミナー室
Dec 7 Fri Solar and Space Plasma Seminar Student Seminar Room, Subaru Bldg.
12月7日（金）16:00～17：00 国立天文台談話会 大セミナー室
Dec 7 Fri NAOJ Seminar Large Seminar Room
詳細は以下をご覧下さい。
12月3日（月）
- Campus
- Mitaka
- Seminar
- Solar and Space Plasma Seminar
- Regularly Scheduled/Sporadic
- Sporadic
- Date and time
- 3 December (Mon), 13:30-15:00
- Place
- Room 113, Central Building (North)
- Speaker
- Mitsuo Oka
- Affiliation
- University of California, Berkeley
- Title
- The PhoENiX mission: Can we really see the particle acceleration site?
- Abstract
- High energy non-thermal particles are produced during explosive energy-release phenomena in space, solar and astrophysical plasma environment. While magnetic reconnection has been considered as a key process of energy conversion, it remains unclear how the requisite production of non-thermal electrons during flares can be explained by magnetic reconnection. Here we argue that “PhoENiX” — a recently proposed, next-generation solar X-ray/gamma-ray mission — is suitable for advancing our understanding of electron acceleration during solar flares because it is designed to capture large-scale contexts such as jets, shocks, and magnetic islands. In this seminar talk, will present recent results of our scientific discussions within the PhoENiX team.
- Facilitator
- -Name：Shin Toriumi
- Comment
12月4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
- 12月4日（火曜日）13時30分～15時
- 場所
- 南棟２階会議室
- 講演者
- 秋澤宏樹
- 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
12月5日（水）
- Campus
- Mitaka
- Seminar
- SOKENDAI colloquium
- Regularly Scheduled/Sporadic
- Regular
- Date and time
- December 5, 2018, 10:30 -12:00
- Place
- Lecture Room
- Speaker
- Tomonari Michiyama
- Affiliation
- SOKENDAI 5th year (D3)(Supervisor: Daisuke Iono,Kouichiro Nakanishi,Masatoshi Imanishi)
- Title
- “True” star formation activity without dust extinction in merging galaxy NGC3256
- Abstract
- (optional)
- Speaker
- Takafumi Tsukui
- Affiliation
- SOKENDAI 2nd year (M2)(Supervisor: Satoru Iguchi,Hiroshi Nagai,Yuichi Matsuda)
- Title
- Galactic Dynamics and Dark Matter Profile of NGC1380 with ALMA and VLT/MUSE.
- Abstract
- (optional)
Please note that the presenter information posted here is not necessarily listed in order of presentation.
- Facilitator
- -Name：Yoshiki Hatta
- Comment
- TV conference system is available connecting from Nobeyama, Hawaii, Mizusawa, and Okayama.
12月7日（金）
- Campus
- Mitaka
- Seminar
- Solar and Space Plasma Seminar
- Regularly Scheduled/Sporadic
- Regular
- Date and time
- 7 December (Fri), 13:30-15:00
- Place
- Student Seminar Room, Subaru Bldg.
- Speaker
- KD Leka and Sung-Hong Park
- Affiliation
- Nagoya University and NWRA
- Title
- Forecasting Solar Flares: Present Capability, and its Broad Implications for Solar Physics
- Abstract
-
Forecasting solar flares is a surprisingly challenging task. For many decades, the basic characteristics of flare-productive active regions have been known. These characteristics generally form the basis of today’s operational forecasting methods, although a few new methods incorporate modern quantitative measures of solar active region magnetic fields. Evaluating the performance of these forecasting facilities was the subject of a recent workshop held at Nagoya University Institute for Space-Earth Environmental Research through its Center for International Collaborative Research. In this talk, the results from this workshop will be summarized, and placed in the context of current research efforts on solar flare forecasting, both empirical and physics-based.
In particular, we will discuss recent data sources, modern analysis algorithms (including machine learning) and advances in numerical modeling, in particular their roles in eventually improving space weather science by undergoing the “ultimate test” of understanding solar flare events, by forecasting them. - Facilitator
- -Name：Shin Toriumi
- Comment
12月7日（金）
- Campus
- Mitaka
- Seminar
- NAOJ seminar
- Regularly Scheduled/Sporadic
- Scheduled
- Date and time
- Friday, Dec. 7 16:00-17:00
- Place
- Large Seminar Room
- Speaker
- Zong-Hong Zhu
- Affiliation
- Beijing Normal University
- Title
- “Gravitational lensing of gravitational waves and precision cosmology”
- Abstract
-
The standard siren approach of gravitational wave cosmology appeals to the direct luminosity distance
estimation through the waveform signals from inspiralling double compact binaries, especially those
with electromagnetic counterparts providing redshifts. It is limited by the calibration uncertainties
in strain amplitude and relies on the ?ne details of the waveform. We will show the next generation
detector, e.g., the Einstein Telescope, is expected to produce 10^4 ?10^5 gravitational wave detections
per year, 50?100 of which will be lensed. Then we report a waveform-independent strategy to achieve
precise cosmography by combining the accurately measured time delays from strongly lensed
gravitational wave signals with the images and redshifts observed in the electromagnetic domain.
We demonstrate that just 10 such lensing systems can provide a Hubble constant uncertainty of 0.68%
for a ?at Lambda Cold Dark Matter universe in the era of third generation ground-based detectors. - Facilitator
- -Name： Nakaya, Hidehiko