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62分間の軌道周期を持つブラック・ウィドウのバイナリ
Kevin B Burdge1,2, Thomas R Marsh3, Jim Fuller4,5
1Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA. kburdge@mit.edu.
Nature
|May 4, 2022
まとめ
ZTF J1406+1222を発見しました ブラックウィドウパルサーの軌道は62分です このシステムは ニュートロン星物理学と 二重進化の洞察力を提供します
科学分野:
- 天文学
- 天体物理学
- バイナリー星系
背景:
- ミリ秒パルサーは 近いバイナリ系で 低質量な同伴星を消し去ります
- "ブラック・ウィドウ"パルサーPSR J1959+2048は,パルサーが同伴星に衝突する際に発生する高エネルギー放射を示している.
- これらのシステムは,巨大な中性子星の研究と中性子星の状態方程式のテストに不可欠です.
研究 の 目的:
- ZTF J1406+1222の発見と観測を報告する
- このシステムの性質と,バイナリ進化モデルへの影響を調査する.
- このシステムを中性子星のキック物理と 形成チャネルの探査機として利用する
主な方法:
- ZTF J1406+1222の観測は,広範囲の階層的な三重システムである.
- 62分間の軌道周期と光学流量の有意な変動 (10倍以上) の分析.
- 広い三次星の特徴は,稀な低金属性の冷たい亜矮星である.
主要な成果:
- ZTF J1406+1222の発見, 62分間の軌道周期を持つブラックウィドウ候補.
- システムの軌道周期は水素に富んだシステムで予測される最小値を下回り,進化モデルに挑戦しています.
- 銀河系のハロ軌道を示し 特定の形成経路を示唆しています
結論:
- ZTF J1406+1222は パルサー-コンパニオン相互作用の極端なケースであり,現在の進化モデルの限界を押し上げています
- このシステムのユニークな特徴は,中性子星の物理,バイナリ進化,形成メカニズムを研究するための新しい機会を提供します.
- ZTF J1406+1222のさらなる研究により,中性子星のキック物理学と巨大中性子星の集団に関する洞察が得られます.
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