超長距離のG-レイ爆発に関連した,非常に明るい磁石駆動型超新星
Jochen Greiner1, Paolo A Mazzali2, D Alexander Kann3
11] Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse 1, 85748 Garching, Germany [2] Excellence Cluster Universe, Technische Universität München, Boltzmannstrasse 2, 85748 Garching, Germany.
Nature
|July 10, 2015
まとめ
天文学者は,超長ガンマ線爆発 (GRB 111209A) と関連した超輝かしい超新星 (SN 2011kl) を発見した. このイベントは,既存の超新星モデルに異議を唱え,マグネタールエネルギー注入を示唆している.
科学分野:
- 天体物理学 天体物理学
- 宇宙の爆発,宇宙の爆発.
- ガンマ線天文学のガンマ線天文学
背景:
- 超長期ガンマ線爆発 (GRB) は,最近提案されたイベントのクラスです.
- 以前の超長いGRBは,超新星との明確な関連性がありませんでした.
- 潜在的な起源には,非常に大きな星の爆発や恒星の潮の乱れが含まれます.
研究 の 目的:
- 超長GRBに関連した最初の確認された超新星を報告する.
- このユニークな超新星の性質を特徴づけるために.
- 超長GRBの祖先とエネルギー源を調査する.
主な方法:
- ガンマ線爆発GRB 111209Aとその関連する光学トランジエントの観測と分析.
- 超新星SN 2011kl.の光譜および光度分析
- SN 2011klの性質を,既知の超新星型と理論モデルと比較する.
主要な成果:
- 超新星SN 2011klは,赤道偏移z=0.677.7の超長 GRB 111209Aと決定的に関連付けられました.
- SN 2011klは,典型的なタイプIc超新星よりも3倍以上の明るさがあります.
- そのスペクトルは,超輝く超新星に類似しているが,明確な紫外線特性を有しており,金属性が低いことを示している.
結論:
- SN 2011klの高輝度と低金属線の不透明性は,従来のタイプIc超新星説明に異議を唱える.
- 観測された性質は,磁石からエネルギーの注入を伴うモデルと一致しています.
- この発見は,超長いGRBとその祖先の性質に関する重要な洞察を提供します.
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