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Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
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低エネルギー核崩壊超新星は,水素の封筒を持たない.

S Valenti1, A Pastorello, E Cappellaro

  • 1Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK. s.valenti@qub.ac.uk

Nature
|June 5, 2009
PubMed
まとめ

天文学者は,弱々しく水素が少ない超新星SN 2008haを発見しました. この発見は,微弱な超新星を,以前は目に見える超新星と関連付けられていなかった,長期間続くガンマ線爆発と結びつける可能性がある.

さらに関連する動画

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

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Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
09:18

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident

Published on: December 14, 2017

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

科学分野:

  • * 天体物理学
  • * 恒星の進化について
  • * 超新星物理学

背景:

  • * 巨大な恒星 (>25〜30太陽質量) は,強い恒星風により,水素欠乏のウルフ・レイエット星になる可能性があります.
  • * 巨大な恒星の核の崩壊は,軽微な光度と低運動エネルギー噴射を持つ低エネルギー超新星を生成する可能性があります.
  • * 低エネルギー超新星の別の起源は,太陽質量7〜9の恒星の酸素ネオン原子核の崩壊である.
  • * これまでに,弱い,水素欠乏,核崩壊の超新星は観測されなかった.

研究 の 目的:

  • *水素が少ない微弱な超新星SN 2008haの発見と特徴を報告する.
  • *類似の淡い超新星を特殊な熱核現象 (SN 2002cxのような) として誤った分類の可能性を調査する.
  • * 薄弱で水素を欠いた核崩壊の超新星と長時間続くガンマ線爆発の関連性を探求する.

主な方法:

  • *観測天文学:SN 2008ha.の検出と分析
  • * 超新星特性 (例えば,水素欠乏,光度) を決定するための光譜分析.
  • * 観測された超新星特性と恒星の進化経路を結びつけるための理論モデリング.

主要な成果:

  • *SN 2008haは,弱い,水素が少ない超新星と特定されました.
  • *同様の現象は,SN 2002cxのような超新星として誤って分類された可能性があるという提案.
  • * 微弱で水素を欠いた超新星と長時間続くガンマ線爆発との間の潜在的な関連が確立された.

結論:

  • *SN 2008haは,観測された新種の淡い超新星を表しています.
  • *類似の出来事の誤った分類は,以前の観測の欠如を説明できる.
  • *この発見は,長期間のガンマ線爆発との観測上の潜在的なリンクを提供する.