Cosmic Textures and Global Monopoles as Seeds for Super-Massive Black Holes. (arXiv:1908.04585v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Brandenberger_R/0/1/0/all/0/1">Robert Brandenberger</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Jiao_H/0/1/0/all/0/1">Hao Jiao</a> (McGill, ETH Zuerich and USTC)
We compute the number density of nonlinear seed fluctuations which have the
right number density to be able to explain the presence of one supermassive
black hole per galaxy, as a function of redshift. We find that there is an
interesting range of symmetry breaking scales for which the density of seeds is
larger that what is predicted in the standard cosmological model with Gaussian
primordial fluctuations. Hence, global defects may help in light of the
mounting tension between the standard cosmological model and observations of
supermassive black hole candidates at high redshifts.
We compute the number density of nonlinear seed fluctuations which have the
right number density to be able to explain the presence of one supermassive
black hole per galaxy, as a function of redshift. We find that there is an
interesting range of symmetry breaking scales for which the density of seeds is
larger that what is predicted in the standard cosmological model with Gaussian
primordial fluctuations. Hence, global defects may help in light of the
mounting tension between the standard cosmological model and observations of
supermassive black hole candidates at high redshifts.
http://arxiv.org/icons/sfx.gif
