论文标题
CR7中的直接爆发黑洞的无线电电源
Radio Power from a Direct-Collapse Black Hole in CR7
论文作者
论文摘要
第一批类星体种子种子的主要竞争者是在灾难性的baryon中直接崩溃的黑洞（DCBH），在原子冷却的光环中以$ z \ sim $ 20折叠倒塌。发现Ly $α$α$α$ emitter cr7在$ z = $ 6.6的情况下，这是一个挑战，尽管这是dcb的第一个挑战。非常大的望远镜X射线数据。在这里，我们确定是否可以检测到来自CR7中DCBH的无线电通量，并与光环中的无线电排放来源（如Young Supernovae和H II区域）区分开来。我们发现，DCBH在1.0 GHz时会发出10-200 njy的通量，远大于年轻的超新星预期的子-NJY信号，但与星形形成区域的连续发射相当。但是，CR7中DCBH的无线电发射可以通过频率的光谱演化与HI I区域的自由发射区分开，并且可以在未来十年内通过平方公里阵列检测到。
The leading contenders for the seeds of the first quasars are direct collapse black holes (DCBHs) formed during catastrophic baryon collapse in atomically-cooled halos at $z \sim$ 20. The discovery of the Ly$α$ emitter CR7 at $z =$ 6.6 was initially held to be the first detection of a DCBH, although this interpretation has since been challenged on the grounds of Spitzer IRAC and Very Large Telescope X-Shooter data. Here we determine if radio flux from a DCBH in CR7 could be detected and discriminated from competing sources of radio emission in the halo such as young supernovae and H II regions. We find that a DCBH would emit a flux of 10 - 200 nJy at 1.0 GHz, far greater than the sub-nJy signal expected for young supernovae but on par with continuum emission from star-forming regions. However, radio emission from a DCBH in CR7 could be distinguished from free-free emission from H II regions by its spectral evolution with frequency and could be detected by the Square Kilometer Array in the coming decade.
