论文标题
由Z = 6.5的原始群集提供动力的电离气泡
An ionised bubble powered by a proto-cluster at z = 6.5
论文作者
论文摘要
我们在此表明，在红移6.5上确认的光谱群发射星系的原始簇产生了大量的电离连续体光子。我们从在光谱源检测到的源中测得的ly $α$通量开始。从这些通量中，我们得出了原始群集的连续光子的电离发射率，我们将其与回离原始群集体积所需的电离发射率进行了比较。我们发现，原始群集中的来源能够电离大气泡，确实比原始群集占据的体积大。对于各种计算，我们使用了模型Amiga，特别是为了得出维持观察到的体积电离所需的Lyman Continum photon的发射率。此外，我们已经假设Amiga在此红移时逃脱了电离光子。
We show herein that a proto-cluster of Ly$α$ emitting galaxies, spectroscopically confirmed at redshift 6.5, produces a remarkable number of ionising continuum photons. We start from the Ly$α$ fluxes measured in the spectra of the sources detected spectroscopically. From these fluxes we derive the ionising emissivity of continuum photons of the proto-cluster, which we compare with the ionising emissivity required to reionise the proto-cluster volume. We find that the sources in the proto-cluster are capable of ionising a large bubble, indeed larger than the volume occupied by the proto-cluster. For various calculations we have used the model AMIGA, in particular to derive the emissivity of the Lyman continuum photons required to maintain the observed volume ionised. Besides, we have assumed the ionising photons escape fraction given by AMIGA at this redshift.
