We consider whether equilibrium size distributions from collisional cascades match the frequency of impactors derived from New Horizons crater counts on Charon. Using an analytic model and a suite of numerical simulations, we demonstrate that collisional cascades generate wavy size distributions; the morphology of the waves depends on the binding energy of solids ##IMG## [http://ej.iop.org/images/2632-3338/1/2/40/psjaba8a9ieqn1.gif] {${Q}_{D}^{\star }$} and the collision velocity v c . For an adopted minimum size of solids, ##IMG## [http://ej.iop.org/images/2632-3338/1/2/40/psjaba8a9ieqn2.gif] {${r}_{\min }$} = 1 μ m, and collision velocity v c = 1–3 km s −1 , the waves are rather insensitive to the gravitational component of ##IMG## [http://ej.iop.org/images/2632-3338/1/2/40/psjaba8a9ieqn3.gif] {${Q}_{D}^{\star }$} . If the bulk strength component...

中文翻译：

---

Charon上的火山口：海王星物体之间碰撞的撞击物

我们考虑碰撞级联的平衡尺寸分布是否与从Charon的New Horizo​​n火山口计数得出的撞击器频率匹配。通过使用分析模型和一组数值模拟，我们证明了碰撞级联会产生波浪状的尺寸分布。波的形态取决于固体的结合能## IMG ## [http://ej.iop.org/images/2632-3338/1/2/40/psjaba8a9ieqn1.gif] {$ {Q} _ {D} ^ {\ star} $}和碰撞速度vc。要获取采用的最小实体尺寸，请## IMG ## [http://ej.iop.org/images/2632-3338/1/2/40/psjaba8a9ieqn2.gif] {$ {r} _ {\ min} $} = 1μm，并且碰撞速度vc = 1-3 km s -1，波对## IMG ##的重力分量相当不敏感[http://ej.iop.org/images/2632- 3338/1/2/40 / psjaba8a9ieqn3.gif] {$ {Q} _ {D} ^ {\ star} $}。