Abstract
We propose that one of the sources in the recently detected system CR7 by
Sobral et al. (2015) through spectro-photometric measurements at $z = 6.6$
harbors a direct collapse blackhole (DCBH). We argue that the LW radiation
field required for direct collapse in source A is provided by sources B and C.
By tracing the LW production history and star formation rate over cosmic time
for the halo hosting CR7 in a $Łambda$CDM universe, we demonstrate that a DCBH
could have formed at $z20$. The spectrum of source A is well fit by
nebular emission from primordial gas around a BH with MBH $4.4 10^6
\ M_ødot$ accreting at a 40% of the Eddington rate, which strongly supports
our interpretation of the data. Combining these lines of evidence, we argue
that CR7 might well be the first DCBH candidate.
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