12/27 Special lecture: Understanding galaxy formation through the physics of the interstellar medium

Time: 12:00pm~12:55pm, December 27 (Wednesday)

Speaker: 胡家瑜 博士後研究員
Dr. Chia-Yu Hu, Postdoctoral associate

Affiliation: Department of Astronomy, University of Florida

Venue: Science Building III 3F SC353
科學三館3樓 SC353會議室

Abstract:
Computational galaxy formation has been remarkably successful in reproducing realistic galaxies using cosmological simulations, where a smooth mixture of gas and dark matter in the early Universe gradually evolves into thousands of galaxies due to gravity and hydrodynamics. The key to this success is the “feedback” processes that drive the cycling of gas and heavy elements in and around galaxies. However, all existing cosmological simulations face a fundamental limitation in their robustness as they adopt empirical “sub-grid” models tuned to reproduce observations. In this talk, I will discuss recent progress in galaxy-scale simulations that resolve the interstellar medium (ISM) as a promising alternative approach to understanding galaxy formation. Specifically, I will focus on three interconnected aspects: (1) How stellar feedback regulates star formation and drives galactic outflows and the implications to the nature of dark matter (2) How chemistry in the ISM connects theory with observations and how it changes with metallicity; (3) How dust evolves and affects the ISM chemistry. I will conclude by describing future prospects for developing physical sub-grid models for next-generation cosmological simulations that can be used to study fundamental physics.

 

12/20 Special lecture: Unveiling the Nature of Dark Matter through Gravitational Lensing in Galaxy Clusters

Time: 12:00pm~12:55pm, December 20 (Wednesday)

Speaker: 譚雪瑩 博士後研究員
Dr. Sut-Ieng Tam, Postdoctoral Researcher

Affiliation: 中央研究院 天文及天文物理研究所
Institute of Astronomy and Astrophysics, Academia Sinica (ASIAA)

Venue: Science Building III 3F SC353
科學三館3樓SC353會議室

Abstract:

Dark matter dominates the matter density of our Universe, yet its nature remains mysterious. Not directly observable by conventional telescopes via light, its presence can nevertheless be indirectly detected through gravitational lensing effects in galaxy clusters, the largest and rarest structures in our Universe. With approximately 85% of their mass constituted by dark matter, galaxy clusters thus serve as ideal laboratories for our research. In this colloquium, I will first introduce gravitational lensing in galaxy clusters, and show how it can be applied to the reconstruction of dark matter mass distributions. My talk will then discuss our pioneering works in constraining the self-interacting cross-section of dark matter through the radial acceleration relation in galaxy clusters. In particular, by comparing BAHAMAS hydrodynamical simulation predictions with CLASH survey data, we have established an upper limit for the self-interacting cross-section of dark matter particles (σ/m < 0.3 cm² g⁻¹). Finally, I will briefly mention some potential future works in cluster cosmology, including how the likelihood-free forward modelling approach can be employed to achieve more precise and accurate constraints on fundamental cosmological parameters.

 

11/16 Towards a better understanding of galaxy formation in the framework of the standard model of cosmology

Time: 1:20pm~3:10pm, November 16 (Thursday)

Title: Towards a better understanding of galaxy formation in the framework of the standard model of cosmology

Speaker: Dr. Yen-Ting Lin , Research Fellow

(Institute of Astronomy and Astrophysics, Academia Sinica)

Place: Science Building III 1F SC157

10/26 An Asian-based Database for Emotional Bodily Movements

Time: 1:20pm~3:10pm, October 26 (Thursday)

Title: An Asian-based Database for Emotional Bodily Movements

Speaker: Prof. Chia-huei Tseng

(Research Institute of Electrical Communication, Tohoku University)

Place: Science Building III 1F SC157

【Invitation】2023 Three-Minute Thesis Competition (3MT)

A call out to all graduate students: Are you ready to step out of your lab and showcase to the world the impact of your groundbreaking research? If so, we invite you to participate in the 7th 3MT@NTU competition and demonstrate your academic presentation skills.

 

The 3MT has been a game-changer for countless contestants. Not only has it helped many of its contestants secure internship opportunities, but the experience gained in participating in the 3MT has also enabled numerous contestants to win outstanding poster presentation awards at international conferences. What’s more, the 3MT has also helped past winners gain recognition from prestigious universities and innovative leaders in various industries.

 

The 3MT Competition, an international research communication event, founded by the University of Queensland, has grown into a global phenomenon. With over 900 universities, including such prestigious institutions as the University of Cambridge, NYU, the University of Hong Kong, and many others from more than 85 countries, this event has made a significant impact and created many success stories worldwide.

 

In 2015, NTU became the first authorized 3MT organizer in Taiwan. Starting from the 3rd 3MT@NTU, the participation of NTU Triangle Alliance – NTU, NTNU and NTUST, has further enhanced opportunities for scholarly exchange and interdisciplinary dialogues. For contestants, this platform has ignited their enthusiasm for taking the stage and showcasing their excellent public speaking skills. Today, this competition has expanded to all universities across Taiwan. Winners of this competition not only receive cash prizes but also have the opportunity to shine on the international stage, bringing honor to their institution.

 

In the last 3MT@NTU, the contestants represented a diverse range of backgrounds: 9 nationalities, 10 universities nationwide, 14 academic disciplines, and a total of 152 contestants participating in the event. This year, with the support of the NTU EMI Teaching and Learning Center, the Academic Writing Education Center (AWEC) at NTU will continue to extend invitations to graduate students from universities across Taiwan, giving students the chance to share their brilliant research in a clear and easily accessible manner. Let’s spark more creative ideas through this sharing and communicating of exciting research.

 

To effectively enhance your academic presentation skills, the AWEC will offer two Presentation Strategies Seminars before registration begins. This is an excellent opportunity for all participants to refine and polish their presentation skills.

 

For detailed information about the competition, including 3MT Promotion Video, Registration Guideline Video, and the competition rules & regulations, please visit the event webpage: https://www.awec.ntu.edu.tw/3mt/2023-3mt/

 

***Key Dates***

Video Submission:10/23 ~ 11/12 (noon)

Presentation Strategies Seminars:10/27 (Fri.)

10:20-11:50 (Chinese Session) @NTU

13:20-14:50 (English Session) @NTU

Final Event:11/30 (Thur.) 18:30 @NTU Liberal Education Classroom Building R101

 

***Prizes***

Winner: NT$20,000

First Runner-Up: NT$15,000

Second Runner-Up: NT$12,000

People’s Choice Award: NT$10,000

 

 

Event Webpage https://www.awec.ntu.edu.tw/3mt/2023-3mt/

Organizer Website http://www.awec.ntu.edu.tw/

Telephone 02-33661480

Email ntuawec@ntu.edu.tw

 

10/12 Realization of large-angular-momentum resonant geometric modes with external mode converter in off-axis pumped solid state lasers

Time: 1:20pm~3:10pm, October 12 (Thursday)

Title: Realization of large-angular-momentum resonant geometric modes with external mode converter in off-axis pumped solid state lasers

Speaker: Prof. Hsing-Chih Liang

(Institute of Physics, National Yang Ming Chiao Tung Univ.)

Place: Science Building III 1F SC157

9/21 Exponential growth and metabolic dynamics in biophysical systems: from theoretical frameworks to single-cell experiments

Time: 1:20pm~3:10pm, September 21 (Thursday)

Title: Exponential growth and metabolic dynamics in biophysical systems: from theoretical frameworks to single-cell experiments

Speaker: Dr. Wei-Hsiang Lin , Assistant Research Fellow

(Institute of Molecular Biology, Academia Sinica)

Place: Science Building III 1F SC157

5/25 Surfing the waves of death with biological switches and topologies

Time: 1:20pm~3:10pm, May 25 (Thursday)

Title: Surfing the waves of death with biological switches and topologies

Speaker: Dr. Sheng-hong Chen , Assistant Research Fellow

(Institute of Molecular Biology, Academia Sinica)

Place: Science Building III 1F SC157

5/11 Hopes and challenges in modern planet formation and evolution

Time: 1:20pm~3:10pm, May 11 (Thursday)

Title: Hopes and challenges in modern planet formation and evolution

Speaker: Dr. Min-Kai Lin , Associate Research Fellow

(Institute of Astronomy and Astrophysics, Academia Sinica)

Place: Science Building III 1F SC157

Abstract: With the discovery of over 5000 extra-solar planets to date, the formation and evolution of planets and planetary systems are among the most rapidly developing fields of astrophysics. In the standard ‘bottom-up’ scenario, planets form from planetesimals — km or larger-sized bodies. Planetesimals form from small, mm-cm size pebbles, which themselves form from micro-sized dust grains immersed in gaseous protoplanetary disks around young stars. I will describe several obstacles, but also new possibilities, on the road from dust to planets from recent theoretical modeling of planetesimal formation and evolution in modern models of protoplanetary disks.

Postdoctoral research fellow position: at NYCU / Taiwan-USAF Program

Postdoctoral research fellow position: “Study the ultrafast dynamics of magnetic topological critical materials” at the National Yang Ming Chiao Tung University (NYCU) / Taiwan-USAF Program

  • JOB DESCRIPTION:
    The Quantum Matters Physics and Ultrafast Dynamics group (Prof. Chih-Wei Luo and Prof. Jiunn-Yuan Lin) at NYCU, Taiwan, has an opening for a one-year postdoctoral position (and maybe extendable). In this project, you will perform experiments to study the ultrafast dynamics of magnetic topological critical materials with pump-probe spectroscopy under low temperature, high magnetic field and high pressure. Topics of interest include electron dynamics of a Weyl semimetal. Ultimately, the goal is to connect spectroscopic transient absorption and reflection measurements with simultaneously tunable pressure, magnetic field, and temperature techniques, in order to alter the degrees of magnetic fluctuations, and study the corresponding electronic, spectroscopic, and transport phenomena due to exotic Weyl physics.

 

  • REQUIREMENTS:
    You have (or will receive in near future) a PhD degree in physics, physical chemistry, electrical engineering, or a closely related subject. You enjoy performing experiments and analysis to stepwise build a deeper understanding of complex physical mechanisms. Experience in one or more of the involved topics (pump-probe spectroscopy, ultrafast lasers and optics, vacuum instrumentation, femtosecond science, high-pressure techniques) is required. Good verbal and written communications skills (in English) are required.

 

  • CONDITIONS OF EMPLOYMENT:
    A postdoc position is intended as full-time appointment in the service of National Yang Ming Chiao Tung University, Taiwan for the duration of 1 year. The postdoc salary will be in accordance with NYCU regulations for academic personnel, and depending on experience, range from a minimum of NTD 58,920 per month up to a maximum of NTD 82,485 per month based on full-time-employment.

 

  • TIMELINE:
    While flexible, preferred start dates are between June 2023 and September 2023 or as early as possible. The positions will remain open until filled.
  • APPLICATION:
    Applicants should send an email to Esther (estherchang@nycu.edu.tw ):
    1. briefly detailing their research experience, interests and career plans;
    2. with an up-to-date CV as attachment.