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The Nature And Geometry Of The Light Echo From Sn 2006x

机译:Sn 2006x发出的回声的性质和几何形状

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We report on the discovery of the geometry producing the light echo emanating from supernova 2006X, a nearby but underluminous Type Ia supernova (SN Ia) in M100 (=NGC 4321). This offers a rare chance to study the environment of a SN Ia. Contrary to previous reports, there is little evidence of a circumstellar component in the light echo morphology or in the light curve of the unresolved SN point source. Instead, the obvious and dominant echo contribution comes from what is probably a relatively thin sheet of material some 26 pc in front of SN 2006X. Of the four known SN Ia light echoes, three show no evidence of a circumstellar echo and the fourth needs to be confirmed. We consider other evidence for circumstellar material around SN Ia, which may be rare.
机译:我们报告发现了产生自超新星2006X的光回波的几何结构的发现,超新星2006X是M100(= NGC 4321)附近但发光的Ia型超新星(SN Ia)。这为研究SN Ia的环境提供了难得的机会。与先前的报告相反,几乎没有证据表明在未解析的SN点源的光回波形态或光曲线中存在星际分量。取而代之的是,明显而显着的回声贡献来自SN 2006X前面大约26 pc的一块相对较薄的材料。在四个已知的SN Ia光回波中,三个未显示出星际回波的证据,第四个需要确认。我们考虑了SN Ia周围的星际物质的其他证据,这可能是罕见的。

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