學術演講


2019/11/29(五)13:00綜合大樓1樓48111B教室演講 : 張滋芳 博士(成功大學前瞻電漿研究中心)

張貼者:2019年11月27日 下午11:49Dabby Lu

講題: ERG Project and Development of SPEDAS
摘要: The ERG (Exploration of energization and Radiation in Geospace) project explores the acceleration, transport, and loss of relativistic electrons in the radiation belts. Radiation belts are regions of enhanced populations of energetic electrons and protons surrounding the Earth in the magnetosphere. For the first time, Taiwanese participate in a magnetospheric exploration mission - JAXA‐led ERG mission. Through years of efforts, Taiwan team has successfully delivered the LEP‐e (Lowenergy particle experiments–electron analyzer) for deployment on the ERG satellite. The ERG satellite has been successfully launched on December 20, 2016 from the Uchinoura Space Center. Besides the ERG satellite, spacecraft missions conducted by several countries have begun to work synergistically to explore the science associated with space weather. In addition, ground‐based network observatories also work closely together for revealing the complex dynamics of the Earth’s magnetosphere, which is strongly associated with the variability of space weather. To integrate the data from all the space‐borne and ground‐based assets can be daunting. The ERG project adopts the SPEDAS (Space Physics Environment Data Analysis System) as the project data analysis software. The development of SPEDAS is a key to efficiently study the space physics data in the golden era of space research.

(原11/28延期為12/5)2019/12/5(四)13:00綜合大樓1樓48111B教室演講 : Dr. Chun-Sung Jao(Institute of Space Science and Engineering, National Central University)

張貼者:2019年11月25日 下午6:48Dabby Lu   [ 已更新 2019年12月2日 下午5:38 ]

講題: Numerical study of plasma-object interaction: Debye-scale Langmuir probe
摘要: The instrument-carrying satellite and sounding rocket missions are designed to take measurements along the trajectory of spacecraft. However, it is well-known that the local plasma will be disturbed in the process of plasma-object interactions, such as spacecraft body and booms, resulting in the influence on the plasma measurements. For the high-resolution plasma density data, the multi-needle Langmuir probe (m-NLP) instrument, which consists of two or more Langmuir probes, is widely used in the in-situ measurement missions. However, we found that the interaction between space plasma and single Debye-scale probe may also affect the measurement of other probes. To clarify this issue, we employ a self-consistent unstructured Particle-In-Cell model for numerical studies. These studies can provide a reference for the data processing and the future design of m-NLP instruments.

2019/11/25(一)13:00綜合大樓1樓48111B教室演講 : 陳乃華 博士(國家高速網路與計算中心)

張貼者:2019年11月21日 下午9:04Dabby Lu   [ 已更新 2019年11月25日 下午6:49 ]

講題: How is AI changing our work in space science?
摘要: Machine learning has merged as a useful method in various applications. Recent years numerous breakthroughs have spiked the use of machine learning and also initiate the experimental researches in the scientific community. In combination of computing facility and massive dataset, machine learning has made a great progress in tasks like image classification. Such technology indeed causes a lot of attentions and concerns.  How can we benefit from such technology in the near future?  In this talk, I will briefly introduce the current usage of machine learning in space science, such as solar flare occurrence, solar spectral irradiance etc.

<專題討論>2019/11/14(四)14:10綜合大樓2樓48218教室演講 : Professor Ling-Hsiao Lyu (Institute of Space Science and Engineering, National Central University)

張貼者:2019年11月11日 上午12:20Dabby Lu

講題: A Study of medium frequency waves in the ion-electron two-fluid plasma and their applications to the whistler-chorus waves observed in the Earth magnetosphere


<專題討論>2019/10/31(四)14:10綜合大樓2樓48218教室演講 : 李宗懋 (成功大學電漿所 / 博士生)

張貼者:2019年10月29日 上午1:05Dabby Lu

講題: introductory talk about research in Professor Kawamori's group.

<專題討論>2019/10/17(四)14:10綜合大樓2樓48218教室演講 : 西村泰太郎 副教授 (成功大學電漿所)

張貼者:2019年10月16日 下午6:52Dabby Lu   [ Ann-Chen Jang 已於 2019年10月16日 下午6:52 更新 ]

講題: Introduction to research by Professor Yasutaro Nishimura. 

<專題討論>2019/10/3(四)14:10綜合大樓2樓48218教室演講 : 陳炳志 副教授 (成功大學電漿所)

張貼者:2019年10月2日 下午6:06Dabby Lu   [ Ann-Chen Jang 已於 2019年10月2日 下午6:06 更新 ]

講題: Introduction to research by Professor Alfred Chen

<專題討論>2019/9/26(四)14:10綜合大樓2樓48218教室演講 : 張博宇 助理教授 (成功大學電漿所)

張貼者:2019年9月23日 下午10:28Dabby Lu   [ Ann-Chen Jang 已於 2019年9月23日 下午10:31 更新 ]

講題: Introduction to research by Professor Po-Yu Chang

<專題討論>2019/9/19(四)14:10綜合大樓2樓48218教室演講 : Dr. Yen-Jung J. Wu (Space Sciences Laboratory, University of California, Berkeley)

張貼者:2019年9月15日 下午7:48Dabby Lu   [ Ann-Chen Jang 已於 2019年9月15日 下午7:48 更新 ]

講題: Exploring the Region where Earth Weather meets Space Weather: Ionospheric Connection Explorer (ICON)
摘要: The NASA’s satellite mission Ionospheric Connection Explorer (ICON) is designed to target on the mesosphere and lower thermosphere (MLT) region where the earth weather meets space weather. The latest ICON launch date is scheduled in October 2019. In order to monitor the source and the response of the ionosphere dynamics, ICON has four instruments on board: 1) Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) provides the neutral wind velocity retrieving from 630.0 nm and 557.7 nm airglow, while the neutral temperature is extracted from 762.0 nm. 2) The Far Ultra Violet Imaging Spectrograph (FUV) measures 157.0 nm to retrieve the atmosphere O/N2 ratio and 135.6 nm recombination emission of O+ ions in the nighttime. 3) The Extreme Ultraviolet Spectrograph (EUV) measures 83.4 and 61.7 nm to retrieve O+ in the daytime. 4) The Ion Velocity Meter (IVM) provides the in-situ measurement of the meridional ion drift perpendicular to the magnetic field at the spacecraft altitude dear 575 km. IVM is used in conjunction with the other ICON instruments to understand the connection between the dynamics of neutral atmosphere and ionosphere through the generation of dynamo current. An overview of the ICON mission and the process from airglow intensity to the science data product will be focused in this talk.

<專題討論>2019/6/13(四)14:10綜合大樓2樓48218教室演講 : 羅文斌 (中央研究院天文所)

張貼者:2019年6月10日 下午10:57Dabby Lu   [ Ann-Chen Jang 已於 2019年6月10日 下午10:57 更新 ]

講題: Event Horizon Telescope Imaging of the Black Hole Shadow in M87
摘要: The first results from the Event Horizon Telescope revealed the first images of the shadow of a supermassive black hole, observed in the centre of galaxy M87. In this talk, I briefly describe the observations, data processing, imaging, and interpretation of the results. The image of the shadow confines 6.5 billion solar masses, consistent with the stellar dynamical mass, within the photon orbit of the black hole. This provides the strongest evidence to date for the existence of supermassive black holes.

1-10 of 77