Nov 21 Mon 16:00～17:00 NAOJ Seminar Large Seminar Room / Zoom
Nov 22 Tue 10:00～11:30 太陽系小天体セミナー Zoom
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11月21日（Mon）
Campus: Mitaka
Seminar: NAOJ seminar
Regularly Scheduled/Sporadic:Sporadic
Date and Time: 2022 November 21 16:00-17:00
Place: Zoom / Large Seminar Room
Speaker: Josep Miquel Girart （Intitute of Space Sciences, CSIC/IEEC）
Title: The polarized view of ALMA of the star formation process
Abstract:Magnetic fields permeate star-forming material on every spatial scale, from the scales of entire galaxies, to the ∼100 pc scale of molecular clouds, to the ∼0.1 pc scale of protostellar cores, and all the way down to innermost regions of protostellar envelopes (∼100 au scales) where planets form within rotationally supported disks around young stars. In the (sub)millimeter regime, these magnetic fields are mainly inferred by observing polarization from magnetically aligned dust grains. In this talk, I will summarize the main results obtained from dust polarization ALMA observations toward star forming regions from scales of few thousand to few tens of au. First, I will also describe the general properties derived of the polarization observed with ALMA at these scales, discuss the origin of the polarized signal in different environments. Then, for the cases where the dust polarization appears to trace the magnetic fields, I will show some general trends and properties of the magnetic fields, and their relevance to the star formation process. Finally, I will show some examples of selected regions observed with ALMA, which are of special interest.
Facilitator: 尾崎 忍夫 / Ozaki,Shinobu
11月22日（火）
キャンパス：三鷹
セミナー名：太陽系小天体セミナー
定例・臨時の別：定例
日時：11月22日（火曜日）10時00分～11時30分
場所：zoom
講演者：春日敏測
世話人の連絡先
名前：渡部潤一
備考：テレビ会議またはスカイプによる参加も可