クエザーの再調査:非常に長いベースラインのインターフェロメトリで観測された急速な時間変動
まとめ
準星体3C 279と3C 273のラジオ観測は,急速な構造変化を示しています. 3C 279の場合,これは明らかな超光の運動を示唆し,クエーサー運動のさらなる研究を必要とする.
科学分野:
- 天文学と天体物理学について
- ラジオ天文学 ラジオ天文学
- コスモロジー・コスモロジーとは
背景:
- クエサールは,強力な放射線を放射する活発な銀河核です.
- ラジオ干渉計は,天体の高解像度イメージングを可能にします.
- 観測されたクエサールにおける急速な構造変化は,既存のモデルに異議を唱える.
研究 の 目的:
- クワザール3C 279と3C 273の微細構造と内部運動を調査する.
- ラジオインターフェロメトリックデータで観測された急速な変動を分析する.
- 観測された現象の潜在的メカニズムを探求すること,明らかに超光の運動を含む.
主な方法:
- ゴールドストーン・ヘイスタックによるラジオ干渉測定観測を用いて.
- データ解釈のための対称的な二重ソースモデルを適用する.
- 観測データと赤道移転に基づいて微分自運動を計算する.
主要な成果:
- クワザール3C 279と3C 273の微細構造の急速な変化が検出されました.
- 3C 279のデータは,光速のおよそ10倍の表面速度に相当する差異的な自運動を示しています.
- この明らかな超光速運動のいくつかの妥当性のある,まだ確認されていない,メカニズムが検討されました.
結論:
- 3C 279のようなクエザールで観測された現象は,表面上の超光速運動の可能性を示唆しています.
- 現在の証拠は,これらの急速な変動の背後にあるメカニズムを明確に説明するのに不十分です.
- 準星体の構造と内部ダイナミクスを理解するために,さらなるラジオインターフェロメトリック観測が不可欠です.
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