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バイナリーパルサーが53分間の軌道に乗る
Z Pan1,2,3,4, J G Lu1,2,3,4, P Jiang5,6,7,8
1National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China.
Nature
|June 20, 2023
まとめ
研究者らは新しいスパイダーパルサーであるPSR J1953+1844 (M71E) を発見し,異常な短い軌道周期と低質量伴星を発見した. この発見は 異なるタイプのパルサーの間のギャップを埋めて 進化を理解するのに役立ちます
科学分野:
- * 天文学と天体物理学
- * コンパクトオブジェクト物理
- * 二重星系
背景:
- *スパイダーパルサーは,近隣の伴星とニュートロン星で,ミリ秒の回転周期と短い軌道につながります.
- * これらのシステムは,パルサーの進化,放射線効果,中性子星の形成を理解するために不可欠です.
- * ブラック・ウィドウパルサーには,非常に低質量な伴星があり,レッドバックパルサーから進化した可能性がある.
研究 の 目的:
- * 質量が適度で,軌道周期が非常に短いミリ秒パルサーを探し,特徴づけること.
- * 異なる種類のパルサーの進化的関係を調査する.
- * 新しいバイナリミリ秒パルサーシステムの発見を報告します.
主な方法:
- * バイナリミリ秒パルサーPSR J1953+1844 (M71E) の無線観測
- * 軌道周期と伴星質量の分析
- *X線源の検出と位置づけ
主要な成果:
- * PSR J1953+1844 (M71E) の発見,バイナリミリ秒パルサー.
- * 軌道周期は53. 3分
- * 伴星の質量は約0.07Mである.
- * 球状星団M71の中心近くに位置する.
結論:
- * 発見されたシステムは,予想されるパルサー集団の空白を埋める.
- スパイダーパルサーとその仲間たちの進化について 新しい洞察力を与えます
- * ニュートロン星二重体の多様性を理解するのに貢献する.
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