论文标题
广泛的IC Supernova Asassn-16FP的无线电视图
Radio view of a broad-line Type Ic supernova ASASSN-16fp
论文作者
论文摘要
我们介绍了IC Supernova型，Asassn-16FP的广泛无线电观察结果。我们的数据代表了SN超过1000天的最低频率观察结果，频率范围为$ 0.33-25 $ GHz和$ \ sim $ \ sim $ 8至1136天的时间范围。观察结果最好由最初被同步体自吸附抑制的震惊的壳外壳产生的同步器发射模型表示。假设相对论粒子和磁场之间的能量等式，我们估计，爆炸波的速度和半径为$ v \ sim 0.15c $和$ r \ sim 3.4 $ $ $ \ times $ 10^{15} $ cm $ t_ {0} $ t_ {0} $ \ sim $ \ sim $ \ sim $ 8天。我们推断出发射材料的总内部能量随着$ e $ $ \ sim $ 0.37 $ \ times $ $ 10^{47} $（t/t $ _ {0} $）$^{0.65} $ erg。我们确定祖细胞星的质量损失率为$ \ dot {m} $ $ \ sim $ $（0.4-3.2）\ times10^{ - 5} $ $ $ m _ {\ odot} \ rm yr yr^{ - 1} $，在各种epochs post-explosion上，以示例后，与群众群体相一致，与群众级别的速率一致。无线电曲线和光谱显示CSM中密度增强的签名，半径为$ \ sim $ $ $ 1.10 \ times 10^{16} $ cm，来自爆炸中心。
We present extensive radio observations of a Type Ic supernova, ASASSN-16fp. Our data represents the lowest frequency observations of the SN beyond 1000 days with a frequency range of $0.33-25$ GHz and a temporal range of $\sim$ 8 to 1136 days post-explosion. The observations are best represented by a model of synchrotron emission from a shocked circumstellar shell initially suppressed by synchrotron self-absorption. Assuming equipartition of energy between relativistic particles and magnetic fields, we estimate the velocity and radius of the blast wave to be $v \sim 0.15c$ and $r \sim 3.4$ $\times$ $10^{15}$ cm respectively at $t_{0}$ $\sim$ 8 days post-explosion. We infer the total internal energy of the radio-emitting material evolves as $E$ $\sim$ 0.37 $\times$ $10^{47}$ (t/t$_{0}$)$^{0.65}$ erg. We determine the mass-loss rate of the progenitor star to be $\dot{M}$ $\sim$ $(0.4-3.2) \times10^{-5}$ $M_{\odot}\rm yr^{-1}$ at various epochs post-explosion, consistent with the mass-loss rate of Galactic Wolf-Rayet stars. The radio light curves and spectra show a signature of density enhancement in the CSM at a radius of $\sim$ $1.10 \times 10^{16}$ cm from the explosion center.
