标题： 部分辐射爆轰波的流体动力学 显示英文标题

标题： Fluid dynamics of partially radiative blast waves

摘要： 我们推导了一个自相似解，用于描述极端相对论（或牛顿）辐射球形爆震波在周围冷介质中的传播。 该解是在假设辐射过程很快，仅发生在冲击波附近，并且它会辐射掉由冲击波产生的固定能量比例的情况下得到的。 在牛顿情况下，这些解推广了Sedov-Taylor绝热解和压力驱动的完全辐射解。 在极端相对论情况下，这些解推广了Blandford-McKee绝热解。 它们提供了一个新的完全辐射的极端相对论解，与Blandford-McKee的完全辐射相对论解不同。 这个新解发展出一个热的内部区域，导致它比之前的估计冷却得更快。 我们发现爆震波的能量随冲击波位置呈幂律变化。 幂律指数取决于冲击波发出的能量比例。 我们得到了爆震波内部的解析解。 这些新解可能适用于伽马射线暴余辉或超新星遗迹的研究。 显示英文摘要

摘要： We derive a self similar solution for the propagation of an extreme relativistic (or Newtonian) radiative spherical blast wave into a surrounding cold medium. The solution is obtained under the assumption that the radiation process is fast, it takes place only in the vicinity of the shock and that it radiates away a fixed fraction of the energy generated by the shock. In the Newtonian regime these solutions generalize the Sedov-Taylor adiabatic solution and the pressure-driven fully radiative solution. In the extreme relativistic case these solutions generalize the Blandford-McKee adiabatic solution. They provide a new fully radiative extreme relativistic solution which is different from the Blandford-McKee fully radiative relativistic solution. This new solution develops a hot interior which causes it to cool faster than previous estimates. We find that the energy of the blast wave behaves as a power law of the location of the shock. The power law index depends on the fraction of the energy emitted by the shock. We obtain an analytic solution for the interior of the blast wave. These new solutions might be applicable to the study of GRB afterglow or SNRs.