TY - JOUR
T1 - A thirty-four billion solar mass black hole in SMSS J2157–3602, the most luminous known quasar
AU - Onken, Christopher A.
AU - Bian, Fuyan
AU - Fan, Xiaohui
AU - Wang, Feige
AU - Wolf, Christian
AU - Yang, Jinyi
N1 - Publisher Copyright:
© 2020 The Author(s)
PY - 2020
Y1 - 2020
N2 - From near-infrared spectroscopic measurements of the Mg II emission line doublet, we estimate the black hole (BH) mass of the quasar, SMSS J215728.21–360215.1, as being (3.4 ± 0.6) × 1010 M and refine the redshift of the quasar to be z = 4.692. SMSS J2157 is the most luminous known quasar, with a 3000 Å luminosity of (4.7 ± 0.5) × 1047 erg s−1 and an estimated bolometric luminosity of 1.6 × 1048 erg s−1, yet its Eddington ratio is only ∼0.4. Thus, the high luminosity of this quasar is a consequence of its extremely large BH – one of the most massive BHs at z > 4.
AB - From near-infrared spectroscopic measurements of the Mg II emission line doublet, we estimate the black hole (BH) mass of the quasar, SMSS J215728.21–360215.1, as being (3.4 ± 0.6) × 1010 M and refine the redshift of the quasar to be z = 4.692. SMSS J2157 is the most luminous known quasar, with a 3000 Å luminosity of (4.7 ± 0.5) × 1047 erg s−1 and an estimated bolometric luminosity of 1.6 × 1048 erg s−1, yet its Eddington ratio is only ∼0.4. Thus, the high luminosity of this quasar is a consequence of its extremely large BH – one of the most massive BHs at z > 4.
KW - Galaxies: active – quasars
KW - Individual
KW - SMSS J215728.21–360215.1
UR - http://www.scopus.com/inward/record.url?scp=85099083777&partnerID=8YFLogxK
U2 - 10.1093/MNRAS/STAA1635
DO - 10.1093/MNRAS/STAA1635
M3 - Article
SN - 0035-8711
VL - 496
SP - 2309
EP - 2314
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 2
ER -