A Thirty-Four Billion Solar Mass Black Hole in SMSS J2157-3602, the Most Luminous Known Quasar. (arXiv:2005.06868v1 [astro-ph.GA])

A Thirty-Four Billion Solar Mass Black Hole in SMSS J2157-3602, the Most Luminous Known Quasar. (arXiv:2005.06868v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Onken_C/0/1/0/all/0/1">Christopher A. Onken</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Bian_F/0/1/0/all/0/1">Fuyan Bian</a> (2), <a href="http://arxiv.org/find/astro-ph/1/au:+Fan_X/0/1/0/all/0/1">Xiaohui Fan</a> (3), <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_F/0/1/0/all/0/1">Feige Wang</a> (3), <a href="http://arxiv.org/find/astro-ph/1/au:+Wolf_C/0/1/0/all/0/1">Christian Wolf</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Yang_J/0/1/0/all/0/1">Jinyi Yang</a> (3) ((1) ANU, (2) ESO, (3) Arizona)

From near-infrared spectroscopic measurements of the MgII emission line
doublet, we estimate the black hole (BH) mass of the quasar, SMSS
J215728.21-360215.1, as being (3.4 +/- 0.6) x 10^10 M_sun and refine the
redshift of the quasar to be z=4.692. SMSS J2157 is the most luminous known
quasar, yet its Eddington ratio is only ~0.4. Thus, the high luminosity of
quasar is a consequence of its extremely large BH — one of the most massive
BHs at z > 4.

From near-infrared spectroscopic measurements of the MgII emission line
doublet, we estimate the black hole (BH) mass of the quasar, SMSS
J215728.21-360215.1, as being (3.4 +/- 0.6) x 10^10 M_sun and refine the
redshift of the quasar to be z=4.692. SMSS J2157 is the most luminous known
quasar, yet its Eddington ratio is only ~0.4. Thus, the high luminosity of
quasar is a consequence of its extremely large BH — one of the most massive
BHs at z > 4.

http://arxiv.org/icons/sfx.gif