相対論ジェットの磁気水力ダイナミック生成

D L Meier¹, S Koide, Y Uchida

¹Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA. David.L.Meier@jpl.nasa.gov

Science (New York, N.Y.)

|January 6, 2001

まとめ

相対論ジェットを持つ天文系は,磁気水力ダイナミックモデルを使用してシミュレートされます. このモデルは,速度やコリマーションなどの主要なジェット特性を説明し,天体物理学現象の洞察を提供します.

科学分野:

天体物理学天体物理学
プラズマ物理学プラズマ物理学
計算科学計算科学とは

背景:

相対性プラズマジェットを生成する天文系の発見.
中央の物体は中性子星やブラックホールであり,物質が蓄積しているか,形成の初期段階にある可能性が高い.
観測されたジェットは,光の速度に近づくような高い速度を示しています.

研究の目的:

マグネトヒドロダイナミックモデルを使用して相対論ジェットの生成をシミュレートする.
観測された天体物理ジェットの基本的な特徴を説明するために.
異なるジェット生成源の行動と統計を理解する.

主な方法:

スーパーコンピュータのシミュレーションを用いて.
マグネトヒドロダイナミック (MHD) モデルを使用しています.
磁気コイルを生成する際の微分回転の役割を調査する.

主要な成果:

マグネトヒドロダイナミックモデルは,相対論ジェット生成を成功裏にシミュレートしています.
モデルはジェット速度とコリマーションの程度を考慮します.
シミュレーションは,観測されたジェット行動とソース統計の説明を提供します.

結論:

マグネトヒドロダイナミックモデルは,相対論的なジェット形成と特性の実現可能な説明を提供します.
微分回転は,プラズマの排出とコリマーションの重要なメカニズムです.
このモデルは,多様な天体物理ジェット現象を理解するのに役立ちます.

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