関連する実験動画
Updated: Jun 12, 2026
11:21
Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
パルサーのスピンダウンの磁気圏調節をスイッチした
Andrew Lyne1, George Hobbs, Michael Kramer
1Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK. andrew.lyne@manchester.ac.uk
Science (New York, N.Y.)
|June 26, 2010
まとめ
パルサーは,2つのスピンダウン速度の間の突然のスイッチによってタイミングノイズを発現します. 磁気圏の変化に関連したこの行動は,パルス形にも影響を及ぼし,より安定したパルサー時計を可能にする可能性があります.
科学分野:
- 天文学と天体物理学について
- パルサー物理学 パルサー物理学
- 恒星の進化について
背景:
- パルサーは,驚くべき回転安定性と一貫したパルス形状で知られています.
- タイミングノイズと呼ばれる説明できないタイミングの偏差は,パルサーで長い間観察されてきました.
- タイミングノイズの根本的な原因と,他のパルサー現象との関連は不明である.
研究 の 目的:
- パルサーのタイミングノイズの原因を調査する.
- タイミングノイズとパルス形状の変動の関係を探求する.
- これらの現象を理解することで,より安定したパルサークロックが作れるかどうかを判断する.
主な方法:
- 複数のパルサーからのタイミングデータの分析.
- タイミングノイズパターンとパルス形の変化の相関.
- パルサーのスピンダウン行動のモデリング.
主要な成果:
- パルサーのタイミングは,2つの異なるスピンダウン率の間の突然のスイッチによって説明される.
- タイミングノイズは,6つの研究されたパルサーのパルサーの形状の観測された変化と相関しています.
- これらの発見は,モードの変更と無効化を含む様々なパルサー現象を磁気圏の変動と関連付けています.
結論:
- パルサーにおけるタイミングノイズとパルスの形状の変動は,相互に関連した現象である.
- パルサーの磁気圏の変化は,これらの関連した行動の起因であると考えられます.
- パルサープロフィールの高精度モニタリングは,非常に安定したパルサー時計の作成を容易にする可能性があります.
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