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The shocks during the accretion of an ultrarelativistic supersonic gas onto a rotating black hole

机译:在超相对论超音速天然气的吸积过程中的冲击   到一个旋转的黑洞

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摘要

In this work, we track the evolution of an ultrarelativistic fluid onto aKerr black hole, on the equatorial plane. In this treatment, we consider thelimit where the rest mass density is neglected, that is, the approximation isvalid in the regime where the internal energy dominates over the rest massdensity. We particularly concentrate in the case of a gas with $\Gamma$ = 4/3,which corresponds to a radiation fluid. We show, as in several cases, that ashock cone appears when the asymptotic velocity of the fluid is larger than theasymptotic relativistic sound speed of the gas. On the other hand, in order toshow the system approaches to steady state, we calculate the accreted totalenergy rate on a spherical surface. Finally, we also show the gas distributionand various of its properties.
机译:在这项工作中,我们在赤道平面上跟踪超相对论流体到克尔黑洞上的演化。在这种处理中,我们考虑了忽略静止质量密度的极限,也就是说,在内部能量在静止质量上占主导地位的情况下,近似是有效的。我们特别关注$ \ Gamma $ = 4/3的气体(对应于辐射流体)的情况。我们证明,在某些情况下,当流体的渐近速度大于气体的渐近相对论声速时,会出现圆锥形锥。另一方面,为了显示系统接近稳态,我们计算了球形表面上累积的总能量率。最后,我们还显示了气体分布及其各种性质。

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