| 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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| 作者姓名： | 卢春燕 严婧雯 问璐 方军 |
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| 作者单位： | Department of Astronomy |
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| 基金项目： | partially supported by the National Natural Science Foundation of China(NSFC,Grant No.11873042);the National Key R&D Program of China(Grant No.2018YFA0404204);the Yunnan Applied Basic Research Projects(2018FY001(003));the Candidate Talents Training Fund of Yunnan Province(2017HB003);the Program for Excellent Young Talents,Yunnan University(WX069051 and 2017YDYQ01)。 |
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| 摘 要： | The young shell-type supernova remnant RCW 103 has peculiar properties in the X-ray morphology obtained with Chandra.The southeastern shell is brighter in the X-rays,and the curved border of the shell in this region is flatter 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,the density of the background material of 2.0 cm-3,and a gradient of 3.3-4.0 cm-3pc-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.
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| 关 键 词： | hydrodynamics(HD)-methods numerical-ISM-supernova remnants |
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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| Chun-Yan Lu,Jing-Wen Yan,Lu Wen,Jun Fang.Numerically investigating the peculiar periphery of a supernova remnant in the medium with a density gradient:the case of RCW 103[J].Research in Astronomy and Astrophysics,2021(2). |
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| Authors: | Chun-Yan Lu Jing-Wen Yan Lu Wen Jun Fang |
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| Institution: | (Department of Astronomy,Key Laboratory of Astroparticle Physics of Yunnan Province,Yunnan University,Kunming 650091,China) |
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| Abstract: | The young shell-type supernova remnant RCW 103 has peculiar properties in the X-ray morphology obtained with Chandra. The southeastern shell is brighter in the X-rays, and the curved border of the shell in this region is flatter than the other part. We investigate the formation of the peculiar periphery of the supernova remnant RCW 103 using 3 D 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, the density of the background material of 2.0 cm~(-3), and a gradient of 3.3-4.0 cm~(-3) 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. |
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