黑洞涡旋驱动磁场中的粒子对产生
Pair creation in the vortex-driven magnetic fields of black holes
AI总结：
本文研究涡旋驱动磁场下黑洞辐射中的电子-正电子对产生，给出不同产生半径与黑洞质量对应的光子逃逸能量阈值。
摘要：
我们在磁场由涡旋驱动的假设下，研究了粒子对产生对黑洞出射辐射的影响。具体而言，对于范围足够广的超大质量黑洞，我们考察了光子在强磁场作用下发生衰变、产生电子-正电子对的能量区间。研究表明，取决于具体物理参数，在某些情形下，黑洞产生的高能或甚高能辐射将受到强烈抑制，因而无法逃离辐射产生的区域。特别是，若光子产生于10 R_g尺度，能量超过约1 GeV的光子将永远无法离开磁层；而若辐射产生于约100 R_g处，相应阈值约为1 TeV。在假设区域为100 R_g的条件下，通过分析该过程随黑洞质量的变化，结果表明，在所考虑的最低质量情况下，能量为250 GeV的光子将永远无法离开黑洞，而在所考虑的最高质量情况下，相应数值约为250 TeV。
英文摘要：
We study the effects of pair creation on the radiation emerging from black holes under the assumption that the magnetic fields are vortex driven. In particular, for a sufficiently broad range of supermassive black holes, we investigated the energies at which photons undergo decay under the influence of a strong magnetic field, producing electron-positron pairs. Depending on particular physical parameters, it has been shown that in certain scenarios high or very high energy emission generated by black holes will be strongly suppressed, thus, will be unable to escape a zone where radiation is generated. In particular, photons with energies exceeding $\sim 1$ GeV will never leave the magnetosphere if they are generated at the scale 10$R_g$ and the threshold is of the order of $1$ TeV, if the emission is produced at $\sim 100\; R_g$. Analysing the process versus the black hole mass, assuming the region $100\; R_g$, it has been shown that for the considered lowest mass, the photons with energies $250$ GeV will never leave the black hole and for the considered highest mass the corresponding value is $\sim 250$ TeV.
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