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Activity > Lunch Talk

Lunch Talk (2020)

ASIAA Lunch Talk is an institute-wide event allowing ASIAA researchers from different fields to discuss astronomy in a very casual manner. The informal meeting is usually held at lunch time on every Monday. Occasionally visitors are also invited to the lunch talk to share their research and ideas with ASIAA researchers.

    Contact
  • Lunch Talk: Colloquium Committee (talks_replace2@_asiaa.sinica.edu.tw)
  • Tech Lunch Talk: Chang, Hsiao-Wen (hwchang_replace2@_asiaa.sinica.edu.tw)
NEXT Lunch Talk: 2020-04-15 Wed 12:00~13:00 [R1203]
Speaker:Chien, Chen
Topic:CANCELLED
No. Time/Place Speaker Topic (Abstract)
download PDF: dowaload talk PDF file
12020-04-29 Wed
12:00~13:00
R1203
Yen, Sheng-Feng
[ASIAA]
CANCELLED
22020-04-20 Mon
12:15~13:15
R1203
Hsi-An Pan
[MPIA]
Introduction to PHANGS [CANCELLED]
32020-04-15 Wed
12:00~13:00
R1203
Chien, Chen
[ASIAA]
CANCELLED
42020-04-01 Wed
12:00~13:00
R1203
Fu, Kuo-Chieh
[ASIAA]
CANCELLED
52020-03-18 Wed
12:00~13:00
R1203
Wang, Chao-Ching
[ASIAA]
Application for manual removal and replacement of SMD components.
62020-03-09 Mon
12:15~13:15
R1203
Cristina Romero-Canizales et al.
[ASIAA]
A Tidal Disruption Event in a luminous infrared galaxy
72020-03-04 Wed
12:00~13:00
R1203
Chang, Yin-Chang
[ASIAA]
SUBARU PFI test light source system.
82020-03-02 Mon
12:15~13:15
R1203
Min-Kai Lin
[ASIAA]
Making planets in turbulent disks is not easy
92020-02-24 Mon
12:15~13:15
R1203
Teppei Okumura
[ASIAA]
Intrinsic alignment of galaxy shapes as new dynamic and geometric probes of cosmology
Abstract

Intrinsic alignments (IAs), correlations of galaxy orientations/shapes with surrounding fields such as the mass overdensity, arise due to physical processes during the formation and evolution of galaxies. Thus, investigating IAs in principle enables one to probe galaxy formation and evolution. IAs have been extensively studied also in the context of potential systematic effects in weak-lensing surveys. Besides the two effects above, there is a growing interest of using the galaxy IAs as a tool to extract cosmological information complimentary to galaxy clustering analysis. In a series of recent papers I have developed a comprehensive framework for this purpose: formulation of the IA statistics, investigation of the cosmological information encoded in the IAs, and a forecast study which shows that constraints on cosmological parameters such as dark energy and Hubble parameter can be tighter than those from conventional galaxy clustering analysis alone by a factor of more than 1.5. In this lunch talk I will present a brief overview of these series of work.

102020-02-10 Mon
12:15~13:15
R1203
Chin-Shin Chang
[ALMA]
ALMA data processing overview
Abstract

In this talk, I will give an overview of ALMA data processing status. I will address the issues involved in the past and current cycles, and the efforts we have made to optimize the efficiency of our workflow. There will be time for a discussion session after the talk. Comments and feedbacks from ALMA current and future PIs, as well as ALMA archive users, are most welcome.

112020-02-05 Wed
12:00~13:00
R1203
Chang, Hsiao-Wen
[ASIAA]
Advanced materials development for superconducting mixers.
122020-01-13 Mon
12:15~13:15
R1203
Cheng-Han Hsieh
[Yale]
Rotating N2D+ filament in Orion B: Do cores inherit their angular momentum from their parent filament?
Abstract

Angular momentum is one of the most important physical quantities that govern star formation. The initial angular momentum of cores may be responsible for its fragmentation and can have an influence on the size of the protoplanetary disk. To understand how cores obtain their initial angular momentum, it is important to study the angular momentum of filaments where cores form. While a number of theoretical studies on filament rotation exist, there exist little or no precise specific angular momentum measurements in star-forming filaments. In this talk, I will present high-resolution N2D+ ALMA observations of the LBS23 (HH24-HH26) region in Orion B. Our maps provide one of the most precise and reliable measurements of the specific angular momentum in a star-forming filament. We find values of about 2 to 9 x 10^20 cm^2/s, comparable to the value measured in rotating cores with a size similar to our filament width (~ 0.04 pc) in Orion A. Our results suggest that young cores may inherit their angular momentum from their parent filaments. In addition, if time permits I will share some work and planned observations for the first interstellar comet, Borisov.

TEL: 886-2-3365-2200 FAX: 886-2-2367-7849
General: asiaa_replace2@_asiaa.sinica.edu.tw Media Request: epo_replace2@_asiaa.sinica.edu.tw
11F of AS/NTU Astronomy-Mathematics Building, No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C.