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High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
Published on: December 22, 2015
GRB 990123からの光学的な後照光の放射に対する極限制約
1Astronomical Observatory, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark. Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland. Nordic Optical Telescope, Ap. 474 St. Cruz de La Palma, E-387.
Science (New York, N.Y.)
|March 26, 1999
まとめ
ガンマ線爆発 (GRB) 990123からの光学放射の測定では,有意な線形偏振は見つかりませんでした. これはGRBを暗示しています.
科学分野:
- 天体物理学 天体物理学
- 高エネルギー天文学 高エネルギー天文学
背景:
- ガンマ線爆発 (GRB) は,宇宙線の激しい閃光である.
- GRBの放出メカニズムを理解するには,爆破波の性質を研究する必要があります.
研究 の 目的:
- GRB 990123.3からの光学後照射の偏振を調査する.
- GRB外流の幾何学と磁場構造を制限するために.
主な方法:
- ノルディック光学望遠鏡を用いた光学観測.
- GRB 990123の線形偏振の測定 発光後.
主要な成果:
- 線形偏線の上限2.3%がGRB 990123.3のために決定されました.
- 光学的なアフターグローで有意な偏振は検出されなかった.
結論:
- 偏振の欠如は,微小な一貫した磁場または小さな角度から見た高度にコリマートされたジェットが微小であることを示唆します.
- これらの発見は,光る宇宙爆発におけるエネルギー放出を説明するのに役立つかもしれない.
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