SNR G1.9+0.3中的点对称性：摧毁其行星状星云原生体的超新星

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Research in Astronomy and Astrophysics Pub Date : 2023-12-19 DOI:10.1088/1674-4527/ad0ded

Noam Soker

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引用次数: 0

摘要

我分析了银河系中最年轻的超新星残余物（SNR），即Ia型超新星残余物G1.9+0.3的新X射线图像，发现了一个非常明显的点对称结构。由于Ia型超新星（SNe Ia）的爆炸模型不会形成这种形态，因此点对称形态必须来自喷出物膨胀的星周物质（CSM）。我所发现的大尺度点对称性和已知的SNR G1.9+0.3喷出物的大幅减速都表明，CSM的质量相对较大，达到了≳1M⊙。我认为最有可能的解释是这个SN Ia爆炸成了一个行星状星云。预言PNe（SNIPs）内有大量SN Ia的情景是核心退化情景。其他的SN Ia情景可能只导致极小部分的SNIPs，或者根本没有。

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Point-symmetry in SNR G1.9+0.3: A Supernova that Destroyed its Planetary Nebula Progenitor

I analyze a new X-ray image of the youngest supernova remnant (SNR) in the Galaxy, which is the type Ia SNR G1.9+0.3, and reveal a very clear point-symmetrical structure. Since explosion models of type Ia supernovae (SNe Ia) do not form such morphologies, the point-symmetrical morphology must come from the circumstellar material (CSM) into which the ejecta expands. The large-scale point-symmetry that I identify and the known substantial deceleration of the ejecta of SNR G1.9+0.3 suggest a relatively massive CSM of ≳1M _⊙. I argue that the most likely explanation is the explosion of this SN Ia into a planetary nebula. The scenario that predicts a large fraction of SN Ia inside PNe (SNIPs) is the core degenerate scenario. Other SN Ia scenarios might lead to only a very small fraction of SNIPs or none at all.

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来源期刊

Research in Astronomy and Astrophysics 地学天文-天文与天体物理

CiteScore

3.20

自引率

16.70%

发文量

2599

审稿时长

6.0 months

期刊介绍： Research in Astronomy and Astrophysics (RAA) is an international journal publishing original research papers and reviews across all branches of astronomy and astrophysics, with a particular interest in the following topics: -large-scale structure of universe formation and evolution of galaxies- high-energy and cataclysmic processes in astrophysics- formation and evolution of stars- astrogeodynamics- solar magnetic activity and heliogeospace environments- dynamics of celestial bodies in the solar system and artificial bodies- space observation and exploration- new astronomical techniques and methods