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.
Description
[1510.01733] Detecting Direct Collapse Black Holes: making the case for CR7
%0 Generic
%1 agarwal2015detecting
%A Agarwal, Bhaskar
%A Johnson, Jarrett L.
%A Zackrisson, Erik
%A Labbe, Ivo
%A Bosch, Frank C. van den
%A Natarajan, Priyamvada
%A Khochfar, Sadegh
%D 2015
%K black collapse direct hole
%T Detecting Direct Collapse Black Holes: making the case for CR7
%U http://arxiv.org/abs/1510.01733
%X 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.
@misc{agarwal2015detecting,
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 $\Lambda$CDM universe, we demonstrate that a DCBH
could have formed at $z\sim 20$. The spectrum of source A is well fit by
nebular emission from primordial gas around a BH with MBH $\sim 4.4 \times 10^6
\ M_{\odot}$ 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.},
added-at = {2015-10-08T10:22:09.000+0200},
author = {Agarwal, Bhaskar and Johnson, Jarrett L. and Zackrisson, Erik and Labbe, Ivo and Bosch, Frank C. van den and Natarajan, Priyamvada and Khochfar, Sadegh},
biburl = {https://www.bibsonomy.org/bibtex/253cffdccc1e9095d0604cea0f24fffee/miki},
description = {[1510.01733] Detecting Direct Collapse Black Holes: making the case for CR7},
interhash = {6616217862cc8130d7e0ece0613035f1},
intrahash = {53cffdccc1e9095d0604cea0f24fffee},
keywords = {black collapse direct hole},
note = {cite arxiv:1510.01733Comment: 7 pages, 4 figures. Submitted to MNRAS},
timestamp = {2015-10-08T10:22:09.000+0200},
title = {Detecting Direct Collapse Black Holes: making the case for CR7},
url = {http://arxiv.org/abs/1510.01733},
year = 2015
}