非常に高エネルギーのガンマ線を発見し,X線バイナリと関連付けました

F Aharonian¹, A G Akhperjanian, K-M Aye

¹Max-Planck-Institut für Kernphysik, Post Office Box 103980, D-69029 Heidelberg, Germany.

Science (New York, N.Y.)

|July 9, 2005

まとめ

マイクロクワザールLS 5039から高エネルギーガンマ線放射が検出され,粒子加速が非常に高いエネルギーまで加速することを示唆しており,活発な銀河核のジェットに似ています.

科学分野:

天体物理学天体物理学
高エネルギー天体物理学
ガンマ線天文学のガンマ線天文学

背景:

X線バイナリーは,中性子星またはブラックホールを周回する通常の恒星で構成されています.
マイクロクワザールとして知られる一部のX線バイナリは,活発な銀河核のジェットに似ているラジオ放射を放出します.
活発な銀河核のジェットは,高エネルギーに粒子を加速し,ガンマ線を生成することが知られている.

研究の目的:

候補微準星LS 5039.9からの高エネルギーガンマ線放射を調査する.
マイクロクワザール内の粒子が非常に高いエネルギーに加速できるかどうかを判断する.

主な方法:

高エネルギー立体鏡システム (H.E.S.S.) を利用する. 観察のために.
100ギガ電子ボルト以上のガンマ線信号のデータを分析する.

主要な成果:

LS 5039.9から検出されたガンマ線放射の証拠
観測された放射は,非常に高いエネルギー (>100 GeV) への粒子加速を示しています.

結論:

LS 5039のようなマイクロクワザーは,粒子を非常に高いエネルギーまで加速させることができます.
この発見は,マイクロクワザールと活発な銀河核との類似性を裏付けている.

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