Synthetic light curves of shocked dense circumstellar shells
Synthetic light curves of shocked dense circumstellar shells
复制标题
震惊致密星周壳的合成光变曲线
DOI：
10.1093/mnras/stt011
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发表时间：
2013
影响因子：
4.8
通讯作者：
Dolgov
中科院分区：
文献类型：
--
作者：
T;J;Moriya;S;I;Blinnikov;P;V;Baklanov;E.I;Sorokina;& A;D;Dolgov
我们用数值方法研究了受激波影响的星周壳层的光曲线（LC），认为它可以解析地再现超新星SN 2006gy观测到的LC。在以前的分析模型中，没有考虑复合和热量校正对lc的影响。为了观察这些影响，我们使用stella进行了激波弹的数值辐射流体力学计算，该方法可以在真实不透明的情况下对多群辐射传递进行数值处理。我们发现复合和辐射校正的影响是显著的，分析模型应该与辐射LC而不是单波段LC进行比较。我们发现，激波周壳层最初由于绝热膨胀而导致LC快速下降，而不是光度增加，这些激波壳层无法解释SN 2006gy的LC特性。然而，我们的合成lc在性质上与SN 2003ma和SN 1988Z的超亮lc相似，后者可能与受冲击的星周壳层有关。
We investigate numerically the light curves (LCs) of shocked circumstellar shells, which it has been suggested might reproduce the observed LC of superluminous SN 2006gy analytically. In the previous analytical model, the effects of recombination and bolometric correction on LCs were not taken into account. To see these effects, we perform numerical radiation hydrodynamic calculations of shocked shells usingstella, which can treat multigroup radiation transfer numerically with realistic opacities. We show that the effects of recombination and bolometric correction are significant and that the analytical model should be compared with the bolometric LC rather than a single-band LC. We find that shocked circumstellar shells having a rapid LC decline initially because of adiabatic expansion, rather than luminosity increase, and these shocked shells fail to explain the LC properties of SN 2006gy. However, our synthetic LCs are qualitatively similar to those of superluminous SN 2003ma and SN 1988Z and the latter objects may be related to shocked circumstellar shells.