超新星发光时的尘埃带

IF 12.9 1区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Nature Astronomy Pub Date : 2025-02-20 DOI:10.1038/s41550-025-02494-x

Lindsay Oldham

引用次数: 0

摘要

在视野中水平流动的ISM的这个小区域被超新星的光加热，因此它在红外线中发光，在大约400天文单位的空间尺度上显示出丰富的条纹，变成紧密分层的薄片和木纹状的结。这样的尺度可以与由这种物质产生的单个恒星系统相媲美，并且在HST和斯皮策之前的光回波成像中还没有得到解决；事实上，在这些JWST观测之前，人们并不知道ISM是在如此小的尺度上构建的。目前对这些特征的最好解释是，它们是由渗透在星际区域的弱磁场雕刻而成的，这些螺旋和结可能代表嵌入在这些磁场中的磁性“岛屿”。在这种光回波中被照亮的尘埃和气体与超新星本身喷射出的任何物质无关，而只是与前恒星生活在一起的物质。虽然斯皮策早期的成像显示仙后座A周围有几十个这样的光回波，但这种现象通常是极其罕见的，因为它要求超新星发出的光脉冲很短——在这里，不到10天——并且附近有足够密度的尘埃。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Astronomy Physics and Astronomy-Astronomy and Astrophysics

CiteScore

19.50

自引率

2.80%

发文量

252

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