Home > Solar and Space Plasma (SSP) Seminar | 赤外ゼミ > 2018.2.26-3.4

2018.2.26-3.4

3月2日(金)10:30~12:00  赤外ゼミ             ALMA棟102室
Mar 2 Fri         Infrared Seminar       ROOM102 ALMA Bldg.

3月2日(金)13:30~15:00  太陽天体プラズマセミナー    院生セミナー室 
Mar 2 Fri      Solar and Space Plasma Seminar  Student Seminar Room, Subaru Bldg.

詳細は以下をご覧下さい。

3月2日(金)

キャンパス
三鷹
セミナー名
赤外ゼミ
定例・臨時の別
定例
日時
3月2日(金曜日)10:30~12:00
場所
ALMA棟102室
講演者
小西 美穂子(ABC)
タイトル
ホットジュピターをもつ若い星まわりの円盤構造

連絡先
-名前:大宮正士・石川裕之
備考
後半11:30~12:00には新着論文の情報交換です。
   ZOOM、TV会議システムでの参加も可能です。

3月2日(金)

Campus
Mitaka
Seminar
Solar and Space Plasma Seminar
Regularly Scheduled/Sporadic
Regular
Date and time
2 March (Fri), 13:30-15:00
Place
Student Seminar Room, Subaru Bldg.
Speaker
Gregal Vissers
Affiliation
Stockholm University
Title
Dissecting bombs and bursts: inversions of reconnection events in SST-IRIS observations
Abstract
Ellerman bombs and UV bursts are transient brightenings that are ubiquitously observed in the lower atmospheres of active and emerging flux regions. While some Ellerman bombs display clear UV burst signatures, not all have correlated UV signal or vice versa, suggesting the underlying atmospheric and magnetic properties may differ between events. As both are believed to pinpoint sites of magnetic reconnection in reconfiguring fields, understanding their occurrence and detailed evolution may provide helpful insights in the overall evolution of active regions. Here we present results from observations and inversions of SST/CRISP and CHROMIS, as well as IRIS data of these transient events. At unprecedented spatial resolution the CHROMIS Ca II H & K observations reveal dynamic fine structure suggesting a plasmoid-mediated reconnection process. We investigate several cases, combining information from the Mg II h & k and Ca II 8542A and H & K lines in order to infer the temperature stratification and magnetic field configuration within which these events occur. I’ll address the difficulties of successfully inverting their Si IV profiles and will discuss our results in light of the current debate on the connection between UV bursts and Ellerman bombs, their occurrence heights and in particular the temperatures that they may (or may not) reach.

Facilitator
-Name:Shin Toriumi
Comment

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