関連する実験動画
Updated: Jul 20, 2026

11:20
Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
銀河平面からの硬いX線放射の起源
1Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA. ebisawa@gsfc.nasa.gov
まとめ
銀河の平面 銀河の平面
科学分野:
- 天文学 (astronomy) 天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは
- 天体物理学 天体物理学
- X線天文学 X線天文学
背景:
- 銀河平面は強い硬いX線放射を出し,連続した山脊を形成しています.
- 既知のX線源は,この山脊放射を説明するのに不十分である.
- 放射の性質 (離散源対分散) は未解決のままである.
研究 の 目的:
- 銀河平面の硬いX線放射が離散的な源から発生するか,拡散しているかどうかを判断する.
- 既知の源がない銀河平面領域の最も深いハードX線調査を実施するために.
主な方法:
- チャンドラX線天文台を利用して,深層のハードX線調査を行いました.
- 既知のX線点源のない銀河平面の17'×17'領域に焦点を当てました.
主要な成果:
- 少なくとも36の新しい硬いX線点源と強い拡散放射が検出されました.
- ポイントソースの表面密度は,高銀河緯度と比較し,銀河外起源を示唆しています.
- 拡散放射は,銀河の平面に熱いプラズマが存在することを示している.
結論:
- 銀河のの硬いX線放射は,主に拡散しています.
- この拡散放射は,銀河の平面内にある広範囲にわたる熱いプラズマを意味する.
- プラズマのエネルギー密度は,他の恒星間物質よりもかなり高い.
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06:46Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
Published on: August 25, 2016
08:44Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
Published on: August 22, 2017
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