论文标题
如果年轻的Z> 9 JWST星系主持了巨大的黑洞怎么办？
What if young z>9 JWST galaxies hosted massive black holes?
论文作者
论文摘要
JWST正在发现具有光度红移$ z> 9 $而几乎没有衰减的星星形成“候选”星系。我们在这样的星系中对推定的巨大黑洞（MBH）进行了建模，发现它们的发射量比JWST过滤器中的星系星光薄弱，并且难以通过颜色的选择以及X射线和无线电观测来检测。仅相对于预期的星系缩放关系（以高爱丁顿的速率），只有MBH的过度质量才能检测到。他们的发现将表明存在沉重的MBH种子，但是需要注意才能排除较轻的种子，因为在这种类型的星系中只能检测到过量的MBH。相反，如果在这些星系中没有托管过量的MBH，则没有重种子，或者很少。如果最大/最高的红移候选星系可以沿SFR-MAS序列生长，则可以达到超过5E10 MSUN的出色质量，并且可以护理从〜1e5 msun生长到〜1e5 msun到> 3e7 msun the z〜6的MBH，以成为某些Z> 6 Quasars的宿主。 log（m_ {gal}/msun）的候选星系〜8不能快速生长其假定的种子，除非种子> 1e6 msun。 JWST候选星系的数量密度远远超过了最高的Z类宿主的数字，这仅允许每1000个这些星系中大约只有1个明亮的Z〜6-7 Quasar。
JWST is discovering star forming `candidate' galaxies with photometric redshifts $z>9$ and little attenuation. We model presumptive massive black holes (MBHs) in such galaxies and find that their unobscured emission is fainter than the galaxy starlight in JWST filters, and difficult to be detected via color-color selection, and X-ray and radio observations. Only MBHs overmassive relative to expected galaxy scaling relations, accreting at high Eddington rates, would be detectable. Their discovery would point to the presence of heavy MBH seeds, but care is needed to exclude the existence of lighter seeds as only overmassive MBHs are detectable in this type of galaxies. Conversely, if no overmassive MBHs are hosted in these galaxies, either there are no heavy seeds or they are rare. The most massive/highest redshift candidate galaxies can attain stellar masses in excess of 5e10 Msun by z~6 if they grow along the SFR-mass sequence, and can nurse a MBH growing from ~1e5 Msun up to >3e7 Msun by z~6, to become hosts of some z>6 quasars. Candidate galaxies of log(M_{gal}/Msun)~8 can not grow their putative seeds fast, unless seeds are >1e6 Msun. The number density of the JWST candidate galaxies far outnumbers that of the highest-z quasar hosts and this allows for about only 1 bright z~6-7 quasar every 1000 of these galaxies.
