超新星 が 誕生 する 時 の 光 の 波
M C Bersten1,2,3, G Folatelli1,2,3, F García2,4,5
1Instituto de Astrofísica de La Plata (IALP), CONICET, Argentina.
Nature
|February 23, 2018
まとめ
科学者は偶然にもIIb型超新星 (SN 2016gkg) を発見し,光学的に急速に明るくなりました. 爆発した星を詳細に研究することができました
科学分野:
- 天文学と天体物理学
- スター進化
- 超新星物理学
背景:
- 超新星として爆発する巨大な恒星は 研究が難しい.
- 初期の電磁気放射は 恒星の進化と構造に関する重要なデータを提供します
- 超新星の予測不可能な状態が この重要な初期段階の観測を 妨げていることが多いのです
研究 の 目的:
- 超新星爆発中の 巨大な星の性質を調査する
- 衝撃後の電磁気放出の最初の数分から数時間を分析する.
- 超新星原発の最も外側の構造と 衝撃発生の物理を理解するために
主な方法:
- 偶然の発見とIIb型超新星 (SN 2016gkg) の頻繁な光学観測.
- 超新星爆発の相をシミュレートするための水力学モデルの開発.
- 急速な明るさの分析 (約. 祖先の性質を検知する.
主要な成果:
- 超新星の祖先の最も外側の層の詳細な特徴.
- 衝撃波の発生を制御する物理学の洞察
- 超新星進化の様々な物理的段階を モデル化することに成功しました
結論:
- SN 2016gkgの急速な明るさは 超新星の祖先へのユニークな窓を提供します
- 水力学的モデルは観測された超新星進化を成功裏に複製した.
- 衝撃の拡散は,爆発トリガーメカニズムとは独立して研究することができます.
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