バイナリー軌道は,古典的な新星における γ-ray 放射と質量放出の原動力である
Laura Chomiuk1, Justin D Linford1, Jun Yang2
1Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
Nature
|October 9, 2014
まとめ
この研究は,二重星の動きが新星爆発を形作り,極と赤道に沿ってガスを放出することを明らかにしています. このバイナリー形成は,粒子を加速させる衝撃を生み出し,新星からのガンマ線放射を説明します.
科学分野:
- 天体物理学 天体物理学
- 爆発的現象は爆発的な現象である.
- 恒星の進化について
背景:
- クラシック・ノヴァは,バイナリ系にある白矮星における一般的な熱核爆発である.
- ノヴァの質量放出メカニズムは完全に理解されていません.
- 多くの新星は,ギガ電子ボルト (GeV) のガンマ線波長で検出され,粒子加速を示しています.
研究 の 目的:
- 古典的な新星における質量放出とガンマ線生成のメカニズムを調査する.
- ノバエジェクトの形成におけるバイナリ相互作用の役割を理解する.
- ガンマ線を放射する新星における相対論粒子加速の起源を正確に特定するために.
主な方法:
- ガンマ線を放射する新星V959 Mon. の高解像度無線画像.
- エジェクトの形態とシンクロトロン放出の分析.
主要な成果:
- ノヴァ・エジェクタは,極外流と赤道漂流のバイナリ・システム運動によって形作られています.
- 極地と赤道からの噴出物との接点で観測されたシンクロトロン放射.
- 射出物で特定された衝撃と相対性粒子加速の証拠.
結論:
- ノヴァエジェクトのバイナリ形成は,質量放出の重要な要因である.
- 形状のエジェクタ内の内部ショックが相対性粒子加速とガンマ線生成の原因である.
- このメカニズムは,多くの新星がガンマ線を放つものとして観測される理由を説明する可能性がある.
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