カラスのパルサーの磁場構造の進化
Andrew Lyne1, Francis Graham-Smith, Patrick Weltevrede
1Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, UK.
Science (New York, N.Y.)
|November 2, 2013
まとめ
クラブパルサー (Crab pulsar) とは,クランブパルサー (Crab pulsar) とは,クランブパルサー (Crab pulsar) とは,クランブパルサー (Crab pulsar) とは,クランブパルサー (Crab pulsar) とは,クランブパルサー (Crab pulsar) とは,
科学分野:
- 天文学 天文学
- 天体物理学 天体物理学
- 中性子星物理学 中性子星物理学
背景:
- パルサーは回転する中性子星で,安定したパルス形状で知られています.
- クラブパルサーは,その電波パルスプロファイルに長期にわたる変化を示しています.
- これらの変化には,メインパルスとインターパルスコンポーネントの分離が増加することが含まれます.
研究 の 目的:
- クラブパルサーの電波パルスプロフィールにおける世俗的な変化を調査する.
- これらの変化がパルサーの磁場進化に及ぼす影響を判断する.
- パルサーの観測されたスピンダウン行動を説明してください.
主な方法:
- クラブパルサーからの22年間のラジオパルスプロフィールデータの分析.
- コンポーネント分離の変化率の測定.
- 中性子星の内部における磁場進化のモデリング.
主要な成果:
- メインパルス-インターパルス分離の安定した増加が,0.62° ± 0.03° per century で観察されました.
- プロフィールコンポーネントの相対的な強さの長期変化が検出されました.
- 磁気二極軸が恒星の赤道に向かって推論された動き.
結論:
- 進化する磁場構造は,カニパルサーの異常なスピンダウン速度の説明を提供します.
- この磁場進化は,パルサーの単純なブレーキモデルに挑戦しています.
- この発見は,中性子星物理学と磁場動力学に関する新しい洞察を提供します.
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