<?xml version="1.0" encoding="utf-8"?>
<TEI xmlns="http://www.tei-c.org/ns/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:hal="http://hal.archives-ouvertes.fr/" xmlns:gml="http://www.opengis.net/gml/3.3/" xmlns:gmlce="http://www.opengis.net/gml/3.3/ce" version="1.1" xsi:schemaLocation="http://www.tei-c.org/ns/1.0 http://api.archives-ouvertes.fr/documents/aofr-sword.xsd">
  <teiHeader>
    <fileDesc>
      <titleStmt>
        <title>HAL TEI export of hal-04103948</title>
      </titleStmt>
      <publicationStmt>
        <distributor>CCSD</distributor>
        <availability status="restricted">
          <licence target="https://creativecommons.org/publicdomain/zero/1.0/">CC0 1.0 - Universal</licence>
        </availability>
        <date when="2026-05-16T22:42:43+02:00"/>
      </publicationStmt>
      <sourceDesc>
        <p part="N">HAL API Platform</p>
      </sourceDesc>
    </fileDesc>
  </teiHeader>
  <text>
    <body>
      <listBibl>
        <biblFull>
          <titleStmt>
            <title xml:lang="en">The first X-ray look at SMSS J114447.77-430859.3: the most luminous quasar in the last 9 Gyr</title>
            <author role="aut">
              <persName>
                <forename type="first">E.S</forename>
                <surname>Kammoun</surname>
              </persName>
              <idno type="halauthorid">2816458-0</idno>
              <affiliation ref="#struct-135748"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Z</forename>
                <surname>Igo</surname>
              </persName>
              <idno type="halauthorid">2816459-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">J.M</forename>
                <surname>Miller</surname>
              </persName>
              <idno type="halauthorid">2816460-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">A.C</forename>
                <surname>Fabian</surname>
              </persName>
              <idno type="halauthorid">2816461-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">M.T</forename>
                <surname>Reynolds</surname>
              </persName>
              <idno type="halauthorid">2816462-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">A</forename>
                <surname>Merloni</surname>
              </persName>
              <idno type="halauthorid">2060809-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">D</forename>
                <surname>Barret</surname>
              </persName>
              <idno type="halauthorid">2816463-0</idno>
              <affiliation ref="#struct-135748"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">E</forename>
                <surname>Nardini</surname>
              </persName>
              <idno type="halauthorid">1501101-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">P.-O</forename>
                <surname>Petrucci</surname>
              </persName>
              <idno type="halauthorid">2769534-0</idno>
              <affiliation ref="#struct-1002500"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">E</forename>
                <surname>Piconcelli</surname>
              </persName>
              <idno type="halauthorid">2816464-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">S</forename>
                <surname>Barnier</surname>
              </persName>
              <idno type="halauthorid">2816465-0</idno>
              <affiliation ref="#struct-1002500"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">J</forename>
                <surname>Buchner</surname>
              </persName>
              <idno type="halauthorid">2816466-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">T</forename>
                <surname>Dwelly</surname>
              </persName>
              <idno type="halauthorid">2816467-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">I</forename>
                <surname>Grotova</surname>
              </persName>
              <idno type="halauthorid">2816468-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">M</forename>
                <surname>Krumpe</surname>
              </persName>
              <idno type="halauthorid">1677154-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">T</forename>
                <surname>Liu</surname>
              </persName>
              <idno type="halauthorid">1125662-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">K</forename>
                <surname>Nandra</surname>
              </persName>
              <idno type="halauthorid">2060808-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">A</forename>
                <surname>Rau</surname>
              </persName>
              <idno type="halauthorid">2561340-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">M</forename>
                <surname>Salvato</surname>
              </persName>
              <idno type="halauthorid">2816469-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">T</forename>
                <surname>Urrutia</surname>
              </persName>
              <idno type="halauthorid">2816470-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">J</forename>
                <surname>Wolf</surname>
              </persName>
              <idno type="halauthorid">1255996-0</idno>
            </author>
            <editor role="depositor">
              <persName>
                <forename>INSPIRE</forename>
                <surname>HEP</surname>
              </persName>
              <email type="md5">95ce79cc22af4b1c280b8573813d3d1e</email>
              <email type="domain">cern.ch</email>
            </editor>
          </titleStmt>
          <editionStmt>
            <edition n="v1" type="current">
              <date type="whenSubmitted">2023-05-24 08:31:11</date>
              <date type="whenModified">2025-10-22 18:04:09</date>
              <date type="whenReleased">2023-05-24 08:31:13</date>
              <date type="whenProduced">2023</date>
              <date type="whenEndEmbargoed">2023-05-24</date>
              <ref type="file" target="https://hal.science/hal-04103948v1/document">
                <date notBefore="2023-05-24"/>
              </ref>
              <ref type="file" subtype="greenPublisher" n="1" target="https://hal.science/hal-04103948v1/file/stad952.pdf" id="file-4104390-3573394">
                <date notBefore="2023-05-24"/>
              </ref>
              <ref type="externalLink" target="http://arxiv.org/pdf/2305.10745"/>
            </edition>
            <respStmt>
              <resp>contributor</resp>
              <name key="519949">
                <persName>
                  <forename>INSPIRE</forename>
                  <surname>HEP</surname>
                </persName>
                <email type="md5">95ce79cc22af4b1c280b8573813d3d1e</email>
                <email type="domain">cern.ch</email>
              </name>
            </respStmt>
          </editionStmt>
          <publicationStmt>
            <distributor>CCSD</distributor>
            <idno type="halId">hal-04103948</idno>
            <idno type="halUri">https://hal.science/hal-04103948</idno>
            <idno type="halBibtex">kammoun:hal-04103948</idno>
            <idno type="halRefHtml">&lt;i&gt;Monthly Notices of the Royal Astronomical Society&lt;/i&gt;, 2023, 522 (4), pp.5217-5237. &lt;a target="_blank" href="https://dx.doi.org/10.1093/mnras/stad952"&gt;&amp;#x27E8;10.1093/mnras/stad952&amp;#x27E9;&lt;/a&gt;</idno>
            <idno type="halRef">Monthly Notices of the Royal Astronomical Society, 2023, 522 (4), pp.5217-5237. &amp;#x27E8;10.1093/mnras/stad952&amp;#x27E9;</idno>
            <availability status="restricted">
              <licence target="https://about.hal.science/hal-authorisation-v1/">HAL Authorization<ref corresp="#file-4104390-3573394"/></licence>
            </availability>
          </publicationStmt>
          <seriesStmt>
            <idno type="stamp" n="INSU">INSU - Institut National des Sciences de l'Univers</idno>
            <idno type="stamp" n="UNIV-TLSE3">Université de Toulouse</idno>
            <idno type="stamp" n="UGA">HAL Grenoble Alpes</idno>
            <idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno>
            <idno type="stamp" n="CNES">CNES - Centre national d'études spatiales</idno>
            <idno type="stamp" n="OSUG">Observatoire des Sciences de la Terre, de l'Univers et de l'Environnement de Grenoble</idno>
            <idno type="stamp" n="OMP">Observatoire Midi-Pyrénées</idno>
            <idno type="stamp" n="OMP-IRAP" corresp="OMP">IRAP : Institut de recherche en astrophysique et planétologie</idno>
            <idno type="stamp" n="IPAG">Institut de Planétologie et d'Astrophysique de Grenoble</idno>
            <idno type="stamp" n="UGA-EPE">Université Grenoble Alpes [2020-*]</idno>
            <idno type="stamp" n="UNIV-UT3">Université Toulouse 3</idno>
            <idno type="stamp" n="UT3-INP">Université de Toulouse / Toulouse INP</idno>
            <idno type="stamp" n="UT3-TOULOUSEINP">Université de Toulouse / Toulouse INP</idno>
            <idno type="stamp" n="INEE-CNRS">Institut écologie et environnement du CNRS</idno>
            <idno type="stamp" n="TEST-UGA">TEST-UGA</idno>
          </seriesStmt>
          <notesStmt>
            <note type="audience" n="2">International</note>
            <note type="popular" n="0">No</note>
            <note type="peer" n="1">Yes</note>
          </notesStmt>
          <sourceDesc>
            <biblStruct>
              <analytic>
                <title xml:lang="en">The first X-ray look at SMSS J114447.77-430859.3: the most luminous quasar in the last 9 Gyr</title>
                <author role="aut">
                  <persName>
                    <forename type="first">E.S</forename>
                    <surname>Kammoun</surname>
                  </persName>
                  <idno type="halauthorid">2816458-0</idno>
                  <affiliation ref="#struct-135748"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Z</forename>
                    <surname>Igo</surname>
                  </persName>
                  <idno type="halauthorid">2816459-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">J.M</forename>
                    <surname>Miller</surname>
                  </persName>
                  <idno type="halauthorid">2816460-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">A.C</forename>
                    <surname>Fabian</surname>
                  </persName>
                  <idno type="halauthorid">2816461-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">M.T</forename>
                    <surname>Reynolds</surname>
                  </persName>
                  <idno type="halauthorid">2816462-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">A</forename>
                    <surname>Merloni</surname>
                  </persName>
                  <idno type="halauthorid">2060809-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">D</forename>
                    <surname>Barret</surname>
                  </persName>
                  <idno type="halauthorid">2816463-0</idno>
                  <affiliation ref="#struct-135748"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">E</forename>
                    <surname>Nardini</surname>
                  </persName>
                  <idno type="halauthorid">1501101-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">P.-O</forename>
                    <surname>Petrucci</surname>
                  </persName>
                  <idno type="halauthorid">2769534-0</idno>
                  <affiliation ref="#struct-1002500"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">E</forename>
                    <surname>Piconcelli</surname>
                  </persName>
                  <idno type="halauthorid">2816464-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">S</forename>
                    <surname>Barnier</surname>
                  </persName>
                  <idno type="halauthorid">2816465-0</idno>
                  <affiliation ref="#struct-1002500"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">J</forename>
                    <surname>Buchner</surname>
                  </persName>
                  <idno type="halauthorid">2816466-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">T</forename>
                    <surname>Dwelly</surname>
                  </persName>
                  <idno type="halauthorid">2816467-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">I</forename>
                    <surname>Grotova</surname>
                  </persName>
                  <idno type="halauthorid">2816468-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">M</forename>
                    <surname>Krumpe</surname>
                  </persName>
                  <idno type="halauthorid">1677154-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">T</forename>
                    <surname>Liu</surname>
                  </persName>
                  <idno type="halauthorid">1125662-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">K</forename>
                    <surname>Nandra</surname>
                  </persName>
                  <idno type="halauthorid">2060808-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">A</forename>
                    <surname>Rau</surname>
                  </persName>
                  <idno type="halauthorid">2561340-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">M</forename>
                    <surname>Salvato</surname>
                  </persName>
                  <idno type="halauthorid">2816469-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">T</forename>
                    <surname>Urrutia</surname>
                  </persName>
                  <idno type="halauthorid">2816470-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">J</forename>
                    <surname>Wolf</surname>
                  </persName>
                  <idno type="halauthorid">1255996-0</idno>
                </author>
              </analytic>
              <monogr>
                <idno type="halJournalId" status="VALID">27534</idno>
                <idno type="issn">0035-8711</idno>
                <idno type="eissn">1365-2966</idno>
                <title level="j">Monthly Notices of the Royal Astronomical Society</title>
                <imprint>
                  <publisher>Oxford University Press (OUP): Policy P - Oxford Open Option A</publisher>
                  <biblScope unit="volume">522</biblScope>
                  <biblScope unit="issue">4</biblScope>
                  <biblScope unit="pp">5217-5237</biblScope>
                  <date type="datePub">2023</date>
                </imprint>
              </monogr>
              <idno type="arxiv">2305.10745</idno>
              <idno type="doi">10.1093/mnras/stad952</idno>
              <idno type="inspire">2660974</idno>
            </biblStruct>
          </sourceDesc>
          <profileDesc>
            <langUsage>
              <language ident="en">English</language>
            </langUsage>
            <textClass>
              <keywords scheme="author">
                <term xml:lang="en">accretion, accretion discs</term>
                <term xml:lang="en">X-rays: general</term>
                <term xml:lang="en">quasars: supermassive black holes</term>
                <term xml:lang="en">quasars: individual: SMSS J114447.77-430859.3</term>
                <term xml:lang="en">quasars: general</term>
                <term xml:lang="en">galaxies: nuclei</term>
                <term xml:lang="en">accretion, accretion discs</term>
              </keywords>
              <classCode scheme="halDomain" n="phys.astr">Physics [physics]/Astrophysics [astro-ph]</classCode>
              <classCode scheme="halTypology" n="ART">Journal articles</classCode>
              <classCode scheme="halOldTypology" n="ART">Journal articles</classCode>
              <classCode scheme="halTreeTypology" n="ART">Journal articles</classCode>
            </textClass>
            <abstract xml:lang="en">
              <p>SMSS J114447.77-430859.3 ($z=0.83$) has been identified in the SkyMapper Southern Survey as the most luminous quasar in the last $\sim 9\,\rm Gyr$. In this paper, we report on the eROSITA/Spectrum-Roentgen-Gamma (SRG) observations of the source from the eROSITA All Sky Survey, along with presenting results from recent monitoring performed using Swift, XMM-Newton, and NuSTAR. The source shows a clear variability by factors of $\sim 10$ and $\sim 2.7$ over timescales of a year and of a few days, respectively. When fit with an absorbed power law plus high-energy cutoff, the X-ray spectra reveal a $\Gamma=2.2 \pm 0.2$ and $E_{\rm cut}=23^{+26}_{-5}\,\rm keV$. Assuming Comptonisation, we estimate a coronal optical depth and electron temperature of $\tau=2.5-5.3\, (5.2-8)$ and $kT=8-18\, (7.5-14)\,\rm keV$, respectively, for a slab (spherical) geometry. The broadband SED is successfully modelled by assuming either a standard accretion disc illuminated by a central X-ray source, or a thin disc with a slim disc emissivity profile. The former model results in a black hole mass estimate of the order of $10^{10}\,M_\odot$, slightly higher than prior optical estimates; meanwhile, the latter model suggests a lower mass. Both models suggest sub-Eddington accretion when assuming a spinning black hole, and a compact ($\sim 10\,r_{\rm g}$) X-ray corona. The measured intrinsic column density and the Eddington ratio strongly suggest the presence of an outflow driven by radiation pressure. This is also supported by variation of absorption by an order of magnitude over the period of $\sim 900\,\rm days$.</p>
            </abstract>
          </profileDesc>
        </biblFull>
      </listBibl>
    </body>
    <back>
      <listOrg type="structures">
        <org type="laboratory" xml:id="struct-135748" status="OLD">
          <idno type="IdRef">232951217</idno>
          <idno type="ISNI">0000 0001 1994 662X</idno>
          <idno type="RNSR">201119477C</idno>
          <idno type="ROR">https://ror.org/05hm2ja81</idno>
          <orgName>Institut de recherche en astrophysique et planétologie</orgName>
          <orgName type="acronym">IRAP</orgName>
          <date type="start">2011-01-01</date>
          <date type="end">2025-01-01</date>
          <desc>
            <address>
              <addrLine>9 avenue Colonel Roche 31028 Toulouse</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.irap.omp.eu/</ref>
          </desc>
          <listRelation>
            <relation active="#struct-217752" type="direct"/>
            <relation active="#struct-443875" type="indirect"/>
            <relation name="UMR5277" active="#struct-300045" type="direct"/>
            <relation name="UMR5277" active="#struct-441569" type="direct"/>
          </listRelation>
        </org>
        <org type="laboratory" xml:id="struct-1002500" status="VALID">
          <idno type="IdRef">184622433</idno>
          <idno type="ISNI">0000000099784677</idno>
          <idno type="RNSR">201119432D</idno>
          <idno type="ROR">https://ror.org/01kcrnc96</idno>
          <orgName>Institut de Planétologie et d'Astrophysique de Grenoble</orgName>
          <orgName type="acronym">IPAG</orgName>
          <date type="start">2020-01-01</date>
          <desc>
            <address>
              <addrLine>414, Rue de la Piscine BP 53 38041 Grenoble Cedex 9</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://ipag.osug.fr/</ref>
          </desc>
          <listRelation>
            <relation active="#struct-300045" type="direct"/>
            <relation active="#struct-307314" type="direct"/>
            <relation name="UMR5274" active="#struct-441569" type="direct"/>
            <relation active="#struct-1002499" type="direct"/>
            <relation active="#struct-1042703" type="direct"/>
          </listRelation>
        </org>
        <org type="institution" xml:id="struct-217752" status="OLD">
          <idno type="IdRef">026404672</idno>
          <idno type="ISNI">0000000121617331</idno>
          <idno type="ROR">https://ror.org/02v6kpv12</idno>
          <idno type="Wikidata">Q1273188</idno>
          <orgName>Université Toulouse III - Paul Sabatier</orgName>
          <orgName type="acronym">UT3</orgName>
          <date type="end">2025-01-01</date>
          <desc>
            <address>
              <addrLine>118 route de Narbonne - 31062 Toulouse</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.univ-tlse3.fr/</ref>
          </desc>
          <listRelation>
            <relation active="#struct-443875" type="direct"/>
          </listRelation>
        </org>
        <org type="regroupinstitution" xml:id="struct-443875" status="VALID">
          <idno type="ROR">https://ror.org/017tgbk05</idno>
          <orgName>Communauté d'universités et établissements de Toulouse</orgName>
          <orgName type="acronym">Comue de Toulouse</orgName>
          <desc>
            <address>
              <addrLine>41 Allée Jules Guesde, 31000 Toulouse</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.univ-toulouse.fr/</ref>
          </desc>
        </org>
        <org type="institution" xml:id="struct-300045" status="VALID">
          <idno type="IdRef">029349265</idno>
          <idno type="ISNI">0000 0001 2154 1736</idno>
          <idno type="ROR">https://ror.org/04kdfz702</idno>
          <idno type="Wikidata">Q3152437</idno>
          <orgName>Institut national des sciences de l'Univers</orgName>
          <orgName type="acronym">INSU - CNRS</orgName>
          <date type="start">2007-04-19</date>
          <desc>
            <address>
              <addrLine>INSU-CNRS3 rue Michel-Ange, 75794 Paris Cedex 16</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.insu.cnrs.fr</ref>
          </desc>
        </org>
        <org type="regroupinstitution" xml:id="struct-441569" status="VALID">
          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <idno type="ROR">https://ror.org/02feahw73</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>
            <address>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.cnrs.fr/</ref>
          </desc>
        </org>
        <org type="institution" xml:id="struct-307314" status="VALID">
          <orgName>Centre National d'Études Spatiales [Toulouse]</orgName>
          <orgName type="acronym">CNES</orgName>
          <desc>
            <address>
              <addrLine>18 avenue Edouard Belin 31401 Toulouse</addrLine>
              <country key="FR"/>
            </address>
          </desc>
        </org>
        <org type="institution" xml:id="struct-1002499" status="VALID">
          <idno type="IdRef">186067518</idno>
          <idno type="ISNI">0000000417832786</idno>
          <idno type="RNSR">200310841A</idno>
          <idno type="ROR">https://ror.org/03vte9x46</idno>
          <orgName>Observatoire des Sciences de l'Univers de Grenoble</orgName>
          <orgName type="acronym">Fédération OSUG</orgName>
          <date type="start">1985-01-01</date>
          <desc>
            <address>
              <addrLine>Domaine universitaire, bâtiment OSUG-D122 rue de la piscine38 400 Saint Martin d’Hères</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.osug.fr/</ref>
          </desc>
        </org>
        <org type="regroupinstitution" xml:id="struct-1042703" status="VALID">
          <idno type="IdRef">240648315</idno>
          <idno type="ROR">https://ror.org/02rx3b187</idno>
          <orgName>Université Grenoble Alpes</orgName>
          <orgName type="acronym">UGA</orgName>
          <date type="start">2020-01-01</date>
          <desc>
            <address>
              <addrLine>Adresse CS 40700 - 38058 Grenoble cedex</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.univ-grenoble-alpes.fr</ref>
          </desc>
        </org>
      </listOrg>
    </back>
  </text>
</TEI>