Date & Time: 2023/June/1 (Thu) 17:00-18:00, Venue: Zoom TV Conference System. This is an informal seminar on the formation of stars and planets. We welcome anyone interested in the subject.

Title: Milliarcsecond mapping of various maser emission in high-mass protostar G358-MM1

Speaker: Ross Burns (RIKEN)

Abstract: The VLBI technique provides the highest angular resolution imaging in astronomy. Additionally, maser emission at various spectral line transitions provide information on the physical conditions and kinematics in their environments. Combining these, maser VLBI can deliver milliarcsecond spatio-kinematics of targets. In this presentation I will show the results of multi-epoch maser VLBI observational results of an accretion burst which occurred in high-mass protostar G358-MM1. Ultimately the combined data set revealed a Keplerian disk with 4 spiral arms, indicative of accretion disk gravitational instability. This unique discovery was obtained by a technique we called ‘heatwave mapping’ which utilizes the propagation of accretion driven radiation to sparsely sample the disk at various radii.

他、会議報告、速報など、飛び入りも歓迎します。今回もしくは次回以降、話題提供できる方は世話人までメールしていただけましたら幸いです。 

Participants:43,  Affiliations:17

Participants list:

Chiba U: P Tomoyuki Hanawa

Nagoya U: P Shu-ichiro Inutsuka, AP Hiroshi Kobayashi, PD Daisei Abe, D2 Kanta Kitajima, D1 Tomotaka Nishikawa, D1MiyayamaRyushi, M2 Fumina KITA, M2 Izumi SENO, Lucas Bayouri

RIKEN: PD Ryosuke Tominaga, PD Ross Alexander Burns

Kavli IPMU/ILANCE: M2 Y. LAPEYRE

Kyoto U: A Yuri Fujii

NAOJ: A Kazunari Iwasaki, Koh Takahashi, PD Yoshiaki Misugi, D2 Kiyoaki Doi, D1Ryota Ichimura

Ibaraki U: P Munetake MOMOSE, P Toru Tsuribe, D2 Ryuta Orihara, M2 Ren Moriizumi

Tokyo Tech: M1  Ryoh Kato, B4 Issei Kojima

Kobe U: 特命A# Kenji Kurosaki

JAMSTEC: PD Sota Arakawa 

Kagoshima U: P Shigehisa Takakuwa, AP Tsukamoto Yusuke, D1 Miyu Kido, Daisuke Takaishi

ICRR: DA Jiro Shimoda

Univ. of Tokyo: P Yuri Aikawa, PD Shingo Hirano, PD Shota Notsu, PD Anton Feeney-Johansson,  D2 Yoshihide Yamato, M2 Yuto Komichi

UTokyo-Komaba: P. Takeru Suzuki 

Hosei U: P Tomoaki Matsumoto

Kyushu U: D3 Naoto Harada, D3 Asako Sato 

Kindai Retired/Emeritus Masayoshi KIGUCHI

次回：2023/July/6  17:00-

連絡世話人：冨永遼佑（理化学研究所） ryosuke.tominaga[at]riken.jp