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Title: Radiation Hydrodynamical Simulations of the First Quasars

Abstract

Supermassive black holes (SMBHs) are the central engines of luminous quasars and are found in most massive galaxies today. But the recent discoveries of ULAS J1120+0641, a 2 × 10 9 $${M}_{\odot }$$ black hole (BH) at z = 7.1, and ULAS J1342+0928, a 8.0 × 10 8 $${M}_{\odot }$$ BH at z = 7.5, now push the era of quasar formation up to just 690 Myr after the Big Bang. Here we report new cosmological simulations of SMBHs with X-rays fully coupled to primordial chemistry and hydrodynamics which show that J1120 and J1342 can form from direct collapse black holes if their growth is fed by cold, dense accretion streams, like those thought to fuel rapid star formation in some galaxies at later epochs. Our models reproduce all of the observed properties of J1120: its mass, luminosity, and H ii region as well as star formation rates and metallicities in its host galaxy. They also reproduce the dynamical mass of the innermost 1.5 kpc of its emission region recently measured by ALMA and J-band magnitudes that are in good agreement with those found by the VISTA Hemisphere Survey.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [2]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Portsmouth University (United Kingdom)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1505985
Report Number(s):
LA-UR-16-28026
Journal ID: ISSN 1538-4357
Grant/Contract Number:  
89233218CNA000001; AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 865; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Black holes; Cosmology

Citation Formats

Smidt, Joseph, Whalen, Daniel J., Johnson, Jarrett L., Surace, Marco, and Li, Hui. Radiation Hydrodynamical Simulations of the First Quasars. United States: N. p., 2018. Web. doi:10.3847/1538-4357/aad7b8.
Smidt, Joseph, Whalen, Daniel J., Johnson, Jarrett L., Surace, Marco, & Li, Hui. Radiation Hydrodynamical Simulations of the First Quasars. United States. doi:10.3847/1538-4357/aad7b8.
Smidt, Joseph, Whalen, Daniel J., Johnson, Jarrett L., Surace, Marco, and Li, Hui. Fri . "Radiation Hydrodynamical Simulations of the First Quasars". United States. doi:10.3847/1538-4357/aad7b8. https://www.osti.gov/servlets/purl/1505985.
@article{osti_1505985,
title = {Radiation Hydrodynamical Simulations of the First Quasars},
author = {Smidt, Joseph and Whalen, Daniel J. and Johnson, Jarrett L. and Surace, Marco and Li, Hui},
abstractNote = {Supermassive black holes (SMBHs) are the central engines of luminous quasars and are found in most massive galaxies today. But the recent discoveries of ULAS J1120+0641, a 2 × 109 ${M}_{\odot }$ black hole (BH) at z = 7.1, and ULAS J1342+0928, a 8.0 × 108 ${M}_{\odot }$ BH at z = 7.5, now push the era of quasar formation up to just 690 Myr after the Big Bang. Here we report new cosmological simulations of SMBHs with X-rays fully coupled to primordial chemistry and hydrodynamics which show that J1120 and J1342 can form from direct collapse black holes if their growth is fed by cold, dense accretion streams, like those thought to fuel rapid star formation in some galaxies at later epochs. Our models reproduce all of the observed properties of J1120: its mass, luminosity, and H ii region as well as star formation rates and metallicities in its host galaxy. They also reproduce the dynamical mass of the innermost 1.5 kpc of its emission region recently measured by ALMA and J-band magnitudes that are in good agreement with those found by the VISTA Hemisphere Survey.},
doi = {10.3847/1538-4357/aad7b8},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 865,
place = {United States},
year = {2018},
month = {9}
}

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