论文标题
矮人星系中的subhalo下沉和偏心的巨大黑洞
Subhalo sinking and off-center massive black holes in dwarf galaxies
论文作者
论文摘要
我们使用完全GPU $ n $ body模拟，我们首次证明了Subhalos通过动态摩擦转移到矮星系中心。这种动态的加热将任何中央巨大的黑洞（MBH）踢到数十个parsecs上，尤其是在早期（$ z $ = 1.5-3）时。这种机制有助于解释矮星系中观察到的偏心BHS，并且还预测，由于动力摩擦变得明显弱，并且BHS会花费更多的时间返回其宿主星系中心，因此较高的质量矮星系中偏心BHS更为常见。矮星系早期时期中心BHS不利的BHS的结果是消除任何BH反馈。
Using fully GPU $N$-body simulations, we demonstrate for the first time that subhalos sink and transfer energy via dynamical friction into the centres of dwarf galaxies. This dynamical heating kicks any central massive black hole (MBH) out to tens of parsecs, especially at early epochs ($z$=1.5-3). This mechanism helps explain the observed off-center BHs in dwarf galaxies and also predicts that off-center BHs are more common in higher mass dwarf galaxies since dynamical friction becomes significantly weaker and BHs take more time to sink back towards the centres of their host galaxies. One consequence of off-center BHs during early epochs of dwarf galaxies is to quench any BH feedback.
