A thirty-four billion solar mass black hole in SMSS J2157–3602, the most luminous known quasar

Christopher A. Onken; Fuyan Bian; Xiaohui Fan; Feige Wang; Christian Wolf; Jinyi Yang

doi:10.1093/MNRAS/STAA1635

A thirty-four billion solar mass black hole in SMSS J2157–3602, the most luminous known quasar

Christopher A. Onken^*, Fuyan Bian, Xiaohui Fan, Feige Wang, Christian Wolf, Jinyi Yang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	2309-2314
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society
Volume	496
Issue number	2
DOIs	https://doi.org/10.1093/MNRAS/STAA1635
Publication status	Published - 2020

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title = "A thirty-four billion solar mass black hole in SMSS J2157–3602, the most luminous known quasar",

abstract = "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 {\AA} 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.",

keywords = "Galaxies: active – quasars, Individual, SMSS J215728.21–360215.1",

author = "Onken, \{Christopher A.\} and Fuyan Bian and Xiaohui Fan and Feige Wang and Christian Wolf and Jinyi Yang",

note = "Publisher Copyright: {\textcopyright} 2020 The Author(s)",

year = "2020",

doi = "10.1093/MNRAS/STAA1635",

language = "English",

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journal = "Monthly Notices of the Royal Astronomical Society",

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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

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 - https://www.scopus.com/pages/publications/85099083777

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 -

A thirty-four billion solar mass black hole in SMSS J2157–3602, the most luminous known quasar

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