Numerically investigating the peculiar periphery of a supernova remnant in the medium with a density gradient: the case of RCW 103

Numerically investigating the peculiar periphery of a supernova remnant in the medium with a density gradient: the case of RCW 103
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对具有密度梯度的介质中超新星遗迹的奇特外围进行数值研究:RCW 103 的情况

DOI:
10.1088/1674-4527/21/2/33
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发表时间:
2020-08
影响因子:
1.8
通讯作者:
Fang Jun
Fang Jun
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Lu Chun-Yan;Yan Jing-Wen;Wen Lu;Fang Jun

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年轻的壳型超新星遗迹RCW 103在钱德拉获得的X射线形态中具有特殊的性质。在X射线中,东南壳的亮度更高,并且该区域的壳的弯曲边界比其他部分更平坦。我们使用三维流体动力学模拟研究了超新星遗迹RCW 103奇特外围的形成。假设超新星喷出物是在具有密度梯度的介质中演化的,则所探测到的外围形状一般可以再现。对于RCW 103,当喷出物质量为3.0 ~M_{\odot}$,背景物质密度为2.0 ~ cm ^{-3}$,梯度为3.3 ~ 4.0 cm ^{-3} pc ^{-1}$时,X射线外围基本上可以再现。模拟结果表明,SNR RCW 103的不对称性主要是由于具有密度梯度的不均匀介质。
The young shell-type supernova remnant RCW 103 has peculiar properties in the X-ray morphology obtained with Chandra. The southeastern shell is more brighter in the X-rays, and the curved border of the shell in this region is more flatten than the other part. We investigate the formation of the peculiar periphery of the supernova remnant RCW 103 using 3D hydrodynamical simulation. Assuming that the supernova ejecta has been evolved in the medium with a density gradient, the detected shape of the periphery can be generally reproduced. For RCW 103, with the ejecta mass of $3.0~M_{\odot}$, the density of the background material of $2.0~\mathrm{cm}^{-3}$, and a gradient of $3.3 - 4.0 ~\mathrm{cm}^{-3} \mathrm{pc}^{-1}$, the X-ray periphery can be generally reproduced. The simulation turned out that the asymmetry of the SNR RCW 103 is mainly due to the inhomogeneous medium with a density gradient.
对具有密度不连续性的环境介质中超新星遗迹 SN 1006 的形态进行数值研究
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