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Updated: Jun 30, 2026

06:42
Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
繰り返される新星RS Ophiuchichiの2006年の爆発における非対称な衝撃波
T J O'Brien1, M F Bode, R W Porcas
1Jodrell Bank Observatory, School of Physics & Astronomy, The University of Manchester, Macclesfield, Cheshire, SK11 9DL, UK. tim.obrien@manchester.ac.uk
Nature
|July 21, 2006
まとめ
RS Ophiuchiのような繰り返し発生する新星は,球形ではなく,ジェット状の爆発で物質を放出します. この研究は,超新星残骸に似たRS Ophiuchiにおける膨張する衝撃波とコリマートされたエジェクションを明らかにしています.
科学分野:
- 天体物理学 天体物理学
- 恒星の進化について
- X線天文学 X線天文学
背景:
- ノヴァ爆発は,バイナリ系にある白矮星における熱核爆発である.
- 1985年のRSオフィウチ爆発の以前のモデルは,X線データや残骸の形態を完全に説明できませんでした.
- ラジオ観測により,二極の残骸が示唆され,球形のモデルと矛盾している.
研究 の 目的:
- 再発する新星RS Ophiuchiの2006年の爆発からの残骸の構造と進化を調査する.
- 残骸の形状と放出メカニズムに関する論争を解決するために.
- 中央バイナリーシステムの方向を決定する.
主な方法:
- RS Ophiuchiの空間的に解明された構造の検出は,2006年の爆発から2週間後に始まります.
- 赤い巨人の風を通って膨張する衝撃波を追跡しています.
- 非熱 (シンクロトロン) 放射の分析.
主要な成果:
- 拡大する衝撃波が観測され,II型超新星に似た残骸が形成されたが,数ヶ月で進化した.
- ラジオ発射は,非熱シンクロトロン放射を確認した.
- アシンメトリーと複数の放射成分は,球形ではなく,ジェットのような,コリマートされたエジェクションを示した.
結論:
- 2006年のRS Ophiuchiの噴出は,ジェットのような噴出を含み,以前の球状対称性仮定に反していた.
- 残骸の構造は,中央バイナリによるコリマーションメカニズムについての洞察を提供します.
- 観測により,バイナリーシステムの方向を決定することができます.
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