论文标题
积累原始黑洞可以解释过多的无线电背景吗？
Can accreting primordial black holes explain the excess radio background?
论文作者
论文摘要
在$ \ simeq 0.1-10 \，{\ rm ghz} $上看到的过剩无线电背景在过去几年中激发了许多科学辩论。最近，有人指出，积聚原始黑洞的软光子发射可能能够解释该信号。我们表明，这些积聚的黑洞的预期紫外光子发射将以$ z> 6 $的形式将宇宙完全离子化，从而在$ z \ simeq $ 20上洗净21 cm的吸收符号，并与现有的宇宙微波背景和平均频谱分离限制保持紧张。我们讨论该模型的可能增强。但是，看来通过积聚原始黑洞来解释无线电多余的解释不是很好的。
The excess radio background seen at $\simeq 0.1-10\,{\rm GHz}$ has stimulated much scientific debate in the past years. Recently, it was pointed out that the soft photon emission from accreting primordial black holes may be able to explain this signal. We show that the expected ultraviolet photon emission from these accreting black holes would ionize the universe completely at $z>6$ and thus wash out the 21 cm absorption signature at $z\simeq$ 20 as well as be in tension with existing cosmic microwave background anisotropy and average spectral distortion limits. We discuss possible augmentations of the model; however, it seems that an explanation of radio excess by accreting primordial black holes is not well-justified.
