中国科学家找到磁星爆发的“临界钥匙”

市场资讯2025-06-15

炒股就看金麒麟分析师研报，权威，专业，及时，全面，助您挖掘潜力主题机会！ IT之家 6 月 15 日消息，磁星是指具有超强磁场的中子星，其强度超过普通冰箱磁铁的 10 万亿倍，爆发时释放的能量足以照亮整个星系，被认为是宇宙中最“恐怖”的实体之一。据新华社报道，中国科学院云南天文台研究团队首次将太阳爆发理论拓展到磁星环境，找到了磁星产生超级爆发的“临界钥匙”。该研究以太阳爆发 CME 理论为基础，...

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万亿倍，爆发时释放的能量足以照亮整个星系，被认为是宇宙中最“恐怖”的实体之一。据新华社报道，中国科学院云南天文台研究团队首次将太阳爆发理论拓展到磁星环境，找到了磁星产生超级爆发的“临界钥匙”。该研究以太阳爆发 CME 理论为基础，...</p>\n\n<a href=\"https://finance.sina.com.cn/stock/t/2025-06-15/doc-infaeftf8562305.shtml\">网页链接</a>\n\n</div>\n\n\n</article>\n</div>\n</body>\n</html>\n","isBrief":false,"type":0,"news_type":1,"symbol":"IE0005OL40V9.USD","symbol_name":"JANUS HENDERSON BALANCED \"A6M\" (USD) INC","start_time":0,"source_url":"https://finance.sina.com.cn/stock/t/2025-06-15/doc-infaeftf8562305.shtml","article_id":"2543369072","we_media_id":null,"thumbnails":[],"rights":null,"url":"https://stock-news.laohu8.com/highlight/detail?id=2543369072","pubTimestamp":1749988620,"columns":[],"sourceInfo":{"source_id":"sina","name":"sina"},"weMediaInfo":null,"summary":"IT之家 6 月 15 日消息，磁星是指具有超强磁场的中子星，其强度超过普通冰箱磁铁的 10 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时，磁通量绳会如同被压缩到极限的弹簧突然挣脱束缚，猛烈弹射出去。”这项工作通过解析方式计算了穿过中子星表面的圆形磁通量绳产生的磁场分布。以此为基础，分析了其受到洛伦兹力、磁张力和重力联合作用时的平衡情况，以及研究了在中子星背景偶极磁场变化时平衡的稳定性。该研究得到了系统失去平衡产生灾变的必要条件的一个简单判据，即当特征参量 η= GMm/(R4B2)<0.48 时（G 是牛顿引力常数，M 是恒星质量，m 是抛射物质量，R 是恒星半径，B 是偶极磁场强度），系统才可能出现平衡失稳从而产生爆发过程。该判据给出了磁星巨耀发产生的磁场下限，结合中子星的磁场与自转周期的关系，得到了周期与周期变化率图上磁星巨耀发产生的理论参数范围，与观测结果符合。此外，本方法以后也能尝试应用到其它天体的磁场爆发过程。将其应用于太阳，可以获得抛射物质量的理论上限为 1017 克与观测相符。IT之家查询发现，相关论文已于 5 月 9 日发表于天体物理学期刊《皇家天文学会月刊》上，论文地址：https://doi.org/10.1093/mnras/staf765\n\n\n\n海量资讯、精准解读，尽在新浪财经APP","kind":"news","is_publish_news":true,"is_publish_highlight":false,"is_publish_live":false,"is_publish_wemedia":null,"editions":null,"column":"","sentiment":"0","news_tag":"","news_rank":0,"symbols":[],"gpt_button":1,"need_auth":false,"code":"91000000","status":"200"},"commentList":[],"isCommentEnd":true,"newsSizeData":{"likeSize":0,"commentSize":0,"repostSize":0,"favoriteSize":0,"likeStatus":false,"favoriteStatus":false},"APP":{"userAgent":"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; 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