Seminars
The UHH Research Park includes the headquarters for the East Asian Observatory, the Caltech Submillimeter Observatory, Subaru, Gemini, UKIRT, the Smithsonian Submillimeter Array and the Institute for Astronomy, plus the astronomers at the University of Hawaii at Hilo. We are one of the major centres for astronomy in the world and encourage all visitors to the JCMT to take advantage of the proximity of these institutes, and give a seminar while in Hilo. Your talk will be advertised at each of the above institutes.
Upcoming Seminar:
4/8:
Title: I
nitial Conditions of Star Formation
Speaker:
Dalei Li (Xinjiang Astronomical Observatory)
Abstract:
Stars are believed to form from dense collapsing molecular cores.
Studies of these cores provide crucial insights into the initial conditions and earliest stages of star formation. In this talk, I will present hydrodynamic models together with molecular spectral line observations to investigate the physical conditions leading to star formation, as well as the potential role of core–core collisions in triggering the collapse of dense cores. Particular attention will be given to the prototypical source Barnard 68.
Date:
Hawaii: Wednesday, April 8 at 4:00 PM
Vietnam & Thailand: Thursday, April 9 at 9:00 AM
Taiwan & China: Thursday, April 9 at 10:00 AM
Japan & Korea: Thursday, April 9 at 11:00 AM
Please use this
link to mark this event on your calendar.
Please use the Zoom link to join this seminar:
Meeting ID: 836 2572 7601
Passcode: 912918
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4/9
Title: Observational Studies of Two Gaseous Environments: Local AGNs and Distant SMGs
Speaker: Shoichiro Mizukoshi (ASIAA)
Abstract:
Gaseous media in the universe are essential to both galaxy evolution and the growth of supermassive black holes. In this talk, I will introduce two distinct projects we have undertaken that each focus on gaseous environments through different observational approaches. The first part focuses on the gaseous environment in the vicinity of active galactic nuclei (AGNs). In this project, we utilized the infrared flux variability, which is characteristic of the AGN, to distinguish between dusty gas and dust-free gas components around the AGN for the first time, and discussed the radiation-pressure effect on these different gas structures. I will also present our recent results on variability analysis of the broad Halpha line for local AGNs with unique characteristics uncovered by our independent analysis. The second part focuses on the gaseous environment in submillimeter galaxies (SMGs). In this project, we performed [CII]158µm observations using ALMA for flux-limited SMG sample at z = 3-5, originally detected by the SCUBA-2 survey. Thanks to the bright nature of our sample, we successfully detected the [CII] line for 16 out of 18 targets with S/N>10. Most of the detected [CII] lines exhibit complex profiles that reflect the kinematics of [CII]-emitting gas. I will also present our preliminary results regarding correlations between [CII] luminosity and several physical properties, such as star formation rate and molecular gas mass.
Date:
Hawaii: Thursday, April 9 at 4:00 PM
Vietnam & Thailand: Friday, April 10 at 9:00 AM
Taiwan & China: Friday, April 10 at 10:00 AM
Japan & Korea: Friday, April 10 at 11:00 AM
Please use this
link to mark this event on your calendar.
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4/15:
Title:
Expanding the Search: From Classical Radio SETI to Submillimeter Technosignatures
Speaker:
Yuri Uno (National Cheng Kung University)
Abstract:
For decades, the Search for Extraterrestrial Intelligence (SETI) has focused primarily on the “Water Hole” and lower GHz frequencies, a strategy driven by the legacy of the 21cm hydrogen line and the terrestrial microwave window. However, as computational power and receiver sensitivities increase, the search is expanding into untapped regions of the electromagnetic spectrum. In this talk, I will provide an overview of the current SETI landscape, highlighting recent advancements in technosignature detection and the transformative role of machine learning in radio astronomy. I will introduce my research within the gigahertz regime, specifically focusing on the search for signals and anomalies in extragalactic environments. Finally, we will explore the unique potential of submillimeter wavelengths. Despite being relatively unexplored in the context of SETI, the submillimeter band offers a vast, significantly quieter RFI environment suitable for wide-bandwidth signals, the detection of atmospheric technosignatures, or thermal emissions from large-scale astroengineering. I will conclude by discussing how facilities like the James Clerk Maxwell Telescope (JCMT) are uniquely positioned to play a pivotal role in this next generation of interstellar searches.
Date:
Hawaii: Wednesday, April 15 at 4:00 PM
Vietnam & Thailand: Thursday, April 16 at 9:00 AM
Taiwan & China: Thursday, April 16 at 10:00 AM
Japan & Korea: Thursday, April 16 at 11:00 AM
Please use this
link to mark this event on your calendar.
Where and How:
EAO seminars are (usually) held in the second floor conference room at the East Asia Observatory, 660 N. A’ohoku Place, Hilo, Hawaii. Please note that access to EAO is possible only through the main entrance (through the side doors facing Subaru). However since COVID we encourage astronomers to join via zoom.
We stream all of our seminars through the Zoom video conferencing application. If you would like to view the seminar via Zoom, links are sent out on the seminar mailing list (see below) or you may contact the helpdesk in advance of the talk and we will make sure that the option is available to you.
A full list of past seminar speakers can be found below for the current and previous years. These pages also contain links to PDF copies of the seminar slides, video recordings of the seminars, and other materials, when available.
To join the Seminar e-mail list:
EAO Seminars are sent out via eaoseminar@eaobservatory.org. If you wish to join this seminar list please send an e-mail to helpdesk@eaobservatory.org.
