ブロードバンド光の深層で安定したインターフェロメトリック無効化は,近くの恒星を回る惑星の観測に意味を持つ

Wallace¹, Hardy, Serabyn

¹Jet Propulsion Laboratory, California Institute of Technology, Pasadena 91109, USA. James.K.Wallace@jpl.nasa.gov

Nature

|August 30, 2000

まとめ

高コントラストのため,系外惑星を直接観測することは困難です. この研究は,将来の惑星探査インターフェロメーターの鍵となる技術である深層ブロードバンド無効化を実証しています.

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
光学インターフェロメトリー (OPI)

背景:

間接的に検出された系外惑星系の数は著しく増加しています.
恒星系外惑星の直接観測は,恒星系外惑星のコントラストが高く,角差が小さいため困難である.

研究の目的:

外惑星の直接観測のための深層ブロードバンド無効化を実験的に実証する.
シンメトリー,安定性,分散性などの深層ブロードバンド無効化を達成するための課題を克服するために.

主な方法:

双開口恒星インターフェロメーターを使用しています.
ブロードバンド破壊干渉を実装して,星光をキャンセルします.
ブロードバンドの熱光 (18%帯域幅) の深 (10^-4) 及び安定した無効化を達成する.

主要な成果:

深刻で安定したブロードバンドの無効化が実証されました.
将来の惑星探査インターフェロメーターの物理原理の検証.
無効化器具の実験室プロトタイプの開発.

結論:

実験結果は,深層ブロードバンド無効化の実現可能性を確認しています.
この技術は,系外惑星の直接検出を進める上で極めて重要です.
試作装置は,ケック干渉計のような高度な観測所への道を開く.

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