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Magnetically Induced Rotating Rayleigh-Taylor Instability
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巨大なブラックホールによる星の潮的な破壊による相対論ジェット活動
D N Burrows1, J A Kennea, G Ghisellini
1Department of Astronomy and Astrophysics, The Pennsylvania State University, 525 Davey Laboratory, University Park, Pennsylvania 16802, USA. burrows@astro.psu.edu
Nature
|August 26, 2011
まとめ
天文学者は,超大質量ブラックホール近くの恒星破壊イベントの珍しい発生を観察し,強力なX線フレアを捕捉し,相対論ジェット活動を誘発しました. この宇宙イベントは,ブラックホールの栄養とジェット形成に関する新しい洞察を提供します.
科学分野:
- 天体物理学 天体物理学
- ブラックホール物理学 ブラックホール物理学
- 高エネルギー天文学 高エネルギー天文学
背景:
- 超大質量ブラックホール (SMBHs) は,星を潮的に破壊できる強力な重力場を持っています.
- 恒星の潮破壊イベント (TDE) は,恒星の破片によって形成された蓄積円盤から明るいフレアを生成します.
- TDEの発生と関連する相対論ジェット活動は,以前直接観察されていませんでした.
研究 の 目的:
- 銀河外トランジントスウィフトJ164449.3+573451.3からの明るいX線フレアの観測を報告する.
- 恒星の破壊イベントの初期段階とその結果を捉え,分析する.
- SMBHから相対論ジェット活動の発生の可能性を調査する.
主な方法:
- 多波長観測は,X線スペクトル領域に焦点を当てて行われます.
- トランジエントソース Swift J164449.3+573451の明るさの増加を時間とともに監視する.
- 恒星の潮破壊イベントの理論モデルとの比較.
主要な成果:
- スウィフト J164449.3+573451からの有意なX線フレアが観測され,その輝度は1990年以来1万倍以上増加しました.
- TDEの理論的予測と一致する相対論ジェット活動の発生を捉えました.
- 観察された行動は,現在のTDEの理論的モデルから細かく逸脱している.
結論:
- このイベントは,恒星の潮破壊イベントによって引き起こされたSMBHからの相対論ジェット活動の最初の観測開始を表しています.
- この観測は,ブラックホールの蓄積とジェット発射の理論モデルを精錬するために重要なデータを提供します.
- 詳細な行動は,TDEの複雑な物理を理解するための新しい道を開く.
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