Serveur d'exploration sur les relations entre la France et l'Australie

Attention, ce site est en cours de développement !
Attention, site généré par des moyens informatiques à partir de corpus bruts.
Les informations ne sont donc pas validées.

X‐ray and radio variability in the low‐luminosity active galactic nucleus NGC 7213

Identifieur interne : 006279 ( Main/Exploration ); précédent : 006278; suivant : 006280

X‐ray and radio variability in the low‐luminosity active galactic nucleus NGC 7213

Auteurs : M. E. Bell [Royaume-Uni] ; T. Tzioumis [Australie] ; P. Uttley ; R. P. Fender ; P. Arévalo [Allemagne, Chili] ; E. Breedt ; I. Mchardy ; D. E. Calvelo ; O. Jamil ; E. Körding [France]

Source :

RBID : ISTEX:8B40C620A40D05F69CB1F0C860A7194D684BA528

Descripteurs français

English descriptors

Abstract

We present the results of a ∼3 yr campaign to monitor the low‐luminosity active galactic nucleus (LLAGN) NGC 7213 in the radio (4.8 and 8.4 GHz) and X‐ray bands (2–10 keV). With a reported X‐ray Eddington ratio of 7 × 10−4LEdd, NGC 7213 can be considered to be comparable to a hard‐state black hole X‐ray binary. We show that a weak correlation exists between the X‐ray and radio light curves. We use the cross‐correlation function to calculate a global time‐lag between events in the X‐ray and radio bands to be 24 ± 12 d lag (8.4 GHz radio lagging X‐ray) and 40 ± 13 d lag (4.8 GHz radio lagging X‐ray), respectively. The radio–radio light curves are extremely well correlated with a lag of 20.5 ± 12.9 d (4.8 GHz lagging 8.4 GHz). We explore the previously established scaling relationship between core radio and X‐ray luminosities and black hole mass LR∝M0.6‐0.8L0.6X, known as the ‘Fundamental Plane of black hole activity’, and show that NGC 7213 lies very close to the best‐fitting ‘global’ correlation for the plane as one of the most‐luminous LLAGNs. With a large number of quasi‐simultaneous radio and X‐ray observations, we explore for the first time the variations of a single AGN with respect to the Fundamental Plane. Although the average radio and X‐ray luminosities for NGC 7213 are in good agreement with the Plane, we show that there is intrinsic scatter with respect to the Plane for the individual data points.

Url:
DOI: 10.1111/j.1365-2966.2010.17692.x


Affiliations:


Links toward previous steps (curation, corpus...)


Le document en format XML

<record>
<TEI wicri:istexFullTextTei="biblStruct">
<teiHeader>
<fileDesc>
<titleStmt>
<title xml:lang="en">X‐ray and radio variability in the low‐luminosity active galactic nucleus NGC 7213</title>
<author>
<name sortKey="Bell, M E" sort="Bell, M E" uniqKey="Bell M" first="M. E." last="Bell">M. E. Bell</name>
</author>
<author>
<name sortKey="Tzioumis, T" sort="Tzioumis, T" uniqKey="Tzioumis T" first="T." last="Tzioumis">T. Tzioumis</name>
</author>
<author>
<name sortKey="Uttley, P" sort="Uttley, P" uniqKey="Uttley P" first="P." last="Uttley">P. Uttley</name>
</author>
<author>
<name sortKey="Fender, R P" sort="Fender, R P" uniqKey="Fender R" first="R. P." last="Fender">R. P. Fender</name>
</author>
<author>
<name sortKey="Arevalo, P" sort="Arevalo, P" uniqKey="Arevalo P" first="P." last="Arévalo">P. Arévalo</name>
</author>
<author>
<name sortKey="Breedt, E" sort="Breedt, E" uniqKey="Breedt E" first="E." last="Breedt">E. Breedt</name>
</author>
<author>
<name sortKey="Mchardy, I" sort="Mchardy, I" uniqKey="Mchardy I" first="I." last="Mchardy">I. Mchardy</name>
</author>
<author>
<name sortKey="Calvelo, D E" sort="Calvelo, D E" uniqKey="Calvelo D" first="D. E." last="Calvelo">D. E. Calvelo</name>
</author>
<author>
<name sortKey="Jamil, O" sort="Jamil, O" uniqKey="Jamil O" first="O." last="Jamil">O. Jamil</name>
</author>
<author>
<name sortKey="Kording, E" sort="Kording, E" uniqKey="Kording E" first="E." last="Körding">E. Körding</name>
</author>
</titleStmt>
<publicationStmt>
<idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:8B40C620A40D05F69CB1F0C860A7194D684BA528</idno>
<date when="2011" year="2011">2011</date>
<idno type="doi">10.1111/j.1365-2966.2010.17692.x</idno>
<idno type="url">https://api.istex.fr/document/8B40C620A40D05F69CB1F0C860A7194D684BA528/fulltext/pdf</idno>
<idno type="wicri:Area/Istex/Corpus">001A26</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001A26</idno>
<idno type="wicri:Area/Istex/Curation">001A26</idno>
<idno type="wicri:Area/Istex/Checkpoint">000698</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000698</idno>
<idno type="wicri:doubleKey">0035-8711:2011:Bell M:x:ray:and</idno>
<idno type="wicri:Area/Main/Merge">006655</idno>
<idno type="wicri:source">INIST</idno>
<idno type="RBID">Pascal:11-0081189</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">002046</idno>
<idno type="wicri:Area/PascalFrancis/Curation">003E81</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">001474</idno>
<idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">001474</idno>
<idno type="wicri:doubleKey">0035-8711:2011:Bell M:x:ray:and</idno>
<idno type="wicri:Area/Main/Merge">006925</idno>
<idno type="wicri:Area/Main/Curation">006279</idno>
<idno type="wicri:Area/Main/Exploration">006279</idno>
</publicationStmt>
<sourceDesc>
<biblStruct>
<analytic>
<title level="a" type="main">X‐ray and radio variability in the low‐luminosity active galactic nucleus NGC 7213</title>
<author>
<name sortKey="Bell, M E" sort="Bell, M E" uniqKey="Bell M" first="M. E." last="Bell">M. E. Bell</name>
<affiliation></affiliation>
<affiliation wicri:level="1">
<country wicri:rule="url">Royaume-Uni</country>
</affiliation>
</author>
<author>
<name sortKey="Tzioumis, T" sort="Tzioumis, T" uniqKey="Tzioumis T" first="T." last="Tzioumis">T. Tzioumis</name>
<affiliation wicri:level="1">
<country xml:lang="fr">Australie</country>
<wicri:regionArea>Australia Telescope National Facility, CSIRO, Marsfield, NSW 2122</wicri:regionArea>
<wicri:noRegion>NSW 2122</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Uttley, P" sort="Uttley, P" uniqKey="Uttley P" first="P." last="Uttley">P. Uttley</name>
<affiliation>
<wicri:noCountry code="subField">1BJ</wicri:noCountry>
</affiliation>
</author>
<author>
<name sortKey="Fender, R P" sort="Fender, R P" uniqKey="Fender R" first="R. P." last="Fender">R. P. Fender</name>
<affiliation>
<wicri:noCountry code="subField">1BJ</wicri:noCountry>
</affiliation>
</author>
<author>
<name sortKey="Arevalo, P" sort="Arevalo, P" uniqKey="Arevalo P" first="P." last="Arévalo">P. Arévalo</name>
<affiliation wicri:level="1">
<country xml:lang="fr">Allemagne</country>
<wicri:regionArea>Max‐Planck‐Institut für Astrophysik, Karl‐Schwarzschild‐Strasse 1, 85741 Garching</wicri:regionArea>
<wicri:noRegion>85741 Garching</wicri:noRegion>
<wicri:noRegion>85741 Garching</wicri:noRegion>
</affiliation>
<affiliation wicri:level="1">
<country xml:lang="fr">Chili</country>
<wicri:regionArea>Departamento de Ciencias Fisicas, Universidad Andres Bello, Av. Republica 252, Santiago</wicri:regionArea>
<wicri:noRegion>Santiago</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Breedt, E" sort="Breedt, E" uniqKey="Breedt E" first="E." last="Breedt">E. Breedt</name>
<affiliation>
<wicri:noCountry code="subField">7AL</wicri:noCountry>
</affiliation>
</author>
<author>
<name sortKey="Mchardy, I" sort="Mchardy, I" uniqKey="Mchardy I" first="I." last="Mchardy">I. Mchardy</name>
<affiliation>
<wicri:noCountry code="subField">1BJ</wicri:noCountry>
</affiliation>
</author>
<author>
<name sortKey="Calvelo, D E" sort="Calvelo, D E" uniqKey="Calvelo D" first="D. E." last="Calvelo">D. E. Calvelo</name>
<affiliation>
<wicri:noCountry code="subField">1BJ</wicri:noCountry>
</affiliation>
</author>
<author>
<name sortKey="Jamil, O" sort="Jamil, O" uniqKey="Jamil O" first="O." last="Jamil">O. Jamil</name>
<affiliation>
<wicri:noCountry code="subField">1BJ</wicri:noCountry>
</affiliation>
</author>
<author>
<name sortKey="Kording, E" sort="Kording, E" uniqKey="Kording E" first="E." last="Körding">E. Körding</name>
<affiliation wicri:level="1">
<country xml:lang="fr">France</country>
<wicri:regionArea>AIM/CEA Saclay and University Paris Diderot, l'Orme des Merisers, F‐91219 Gif‐sur‐Yvette CEDEX</wicri:regionArea>
<wicri:noRegion>91219 Gif‐sur‐Yvette CEDEX</wicri:noRegion>
<wicri:noRegion>F‐91219 Gif‐sur‐Yvette CEDEX</wicri:noRegion>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series>
<title level="j" type="main">Monthly Notices of the Royal Astronomical Society</title>
<title level="j" type="alt">MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY</title>
<idno type="ISSN">0035-8711</idno>
<idno type="eISSN">1365-2966</idno>
<imprint>
<biblScope unit="vol">411</biblScope>
<biblScope unit="issue">1</biblScope>
<biblScope unit="page" from="402">402</biblScope>
<biblScope unit="page" to="410">410</biblScope>
<biblScope unit="page-count">9</biblScope>
<publisher>Blackwell Publishing Ltd</publisher>
<pubPlace>Oxford, UK</pubPlace>
<date type="published" when="2011-02-11">2011-02-11</date>
</imprint>
<idno type="ISSN">0035-8711</idno>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt>
<idno type="ISSN">0035-8711</idno>
</seriesStmt>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>Accretion</term>
<term>Accretion disks</term>
<term>Accretion rate</term>
<term>Accurate measurement</term>
<term>Active galaxies</term>
<term>Active galaxy nuclei</term>
<term>Agns</term>
<term>Archival</term>
<term>Archival data points</term>
<term>Archival observations</term>
<term>Archival points</term>
<term>Atca</term>
<term>Atca monitoring</term>
<term>Australia telescope</term>
<term>Average location</term>
<term>Baseline</term>
<term>Bhxrb</term>
<term>Bhxrb sample</term>
<term>Bhxrbs</term>
<term>Binary X ray source</term>
<term>Black hole</term>
<term>Black hole activity</term>
<term>Black hole mass</term>
<term>Black holes</term>
<term>Blandford konigl</term>
<term>Bottom panel</term>
<term>Cent threshold</term>
<term>Centroid</term>
<term>Confidence centroid</term>
<term>Correlation ceofficient</term>
<term>Correlation functions</term>
<term>Cosmic x-ray sources</term>
<term>Cosmology</term>
<term>Cross correlations</term>
<term>Data point</term>
<term>Data points</term>
<term>Dcfmax</term>
<term>Discrete function</term>
<term>Edelson krolik</term>
<term>Ejection events</term>
<term>Energy range</term>
<term>Erg</term>
<term>Falcke</term>
<term>Fender</term>
<term>Flux values</term>
<term>Fundamental plane</term>
<term>Galaxy nuclei</term>
<term>Gallo</term>
<term>Halpern filippenko</term>
<term>Internal shock model</term>
<term>Light curve</term>
<term>Light curves</term>
<term>Llagn</term>
<term>Llagn sample</term>
<term>Local level</term>
<term>Localized shocks</term>
<term>Luminosity</term>
<term>Many orders</term>
<term>Middle panel</term>
<term>Mnras</term>
<term>Monthly notices</term>
<term>Nandra pounds</term>
<term>Other forms</term>
<term>Plasmon model</term>
<term>Pooley</term>
<term>Pooley fender</term>
<term>Power spectrum</term>
<term>Radio bands</term>
<term>Radio data</term>
<term>Radio data points</term>
<term>Radio flux</term>
<term>Radio light curves</term>
<term>Radio loudness</term>
<term>Radio loudness parameter</term>
<term>Radio luminosities</term>
<term>Radio points</term>
<term>Radio variability</term>
<term>Random light curves</term>
<term>Rding</term>
<term>Same source</term>
<term>Scatter</term>
<term>Seyfert galaxies</term>
<term>Show evidence</term>
<term>Softer state</term>
<term>Solid line</term>
<term>Spectral index</term>
<term>Spectral indices</term>
<term>Time variation</term>
<term>Tting</term>
<term>Tting parameters</term>
<term>Turner pounds</term>
<term>Variability</term>
<term>Weak correlation</term>
<term>X ray observation</term>
<term>X-ray binary stars</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Binaire RX</term>
<term>Corrélation croisée</term>
<term>Cosmologie</term>
<term>Courbe lumière</term>
<term>Disque accrétion</term>
<term>Fonction corrélation</term>
<term>Galaxies actives</term>
<term>Luminosité</term>
<term>Noyau galactique actif</term>
<term>Noyau galaxies</term>
<term>Observation RX</term>
<term>Source RX binaire</term>
<term>Source RX cosmique</term>
<term>Trou noir</term>
<term>Variabilité</term>
<term>Variation temporelle</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en">
<term>Accretion</term>
<term>Accretion rate</term>
<term>Accurate measurement</term>
<term>Agns</term>
<term>Archival</term>
<term>Archival data points</term>
<term>Archival observations</term>
<term>Archival points</term>
<term>Atca</term>
<term>Atca monitoring</term>
<term>Australia telescope</term>
<term>Average location</term>
<term>Baseline</term>
<term>Bhxrb</term>
<term>Bhxrb sample</term>
<term>Bhxrbs</term>
<term>Black hole</term>
<term>Black hole activity</term>
<term>Black hole mass</term>
<term>Blandford konigl</term>
<term>Bottom panel</term>
<term>Cent threshold</term>
<term>Centroid</term>
<term>Confidence centroid</term>
<term>Correlation ceofficient</term>
<term>Data point</term>
<term>Data points</term>
<term>Dcfmax</term>
<term>Discrete function</term>
<term>Edelson krolik</term>
<term>Ejection events</term>
<term>Energy range</term>
<term>Erg</term>
<term>Falcke</term>
<term>Fender</term>
<term>Flux values</term>
<term>Fundamental plane</term>
<term>Gallo</term>
<term>Halpern filippenko</term>
<term>Internal shock model</term>
<term>Light curve</term>
<term>Light curves</term>
<term>Llagn</term>
<term>Llagn sample</term>
<term>Local level</term>
<term>Localized shocks</term>
<term>Luminosity</term>
<term>Many orders</term>
<term>Middle panel</term>
<term>Mnras</term>
<term>Monthly notices</term>
<term>Nandra pounds</term>
<term>Other forms</term>
<term>Plasmon model</term>
<term>Pooley</term>
<term>Pooley fender</term>
<term>Power spectrum</term>
<term>Radio bands</term>
<term>Radio data</term>
<term>Radio data points</term>
<term>Radio flux</term>
<term>Radio light curves</term>
<term>Radio loudness</term>
<term>Radio loudness parameter</term>
<term>Radio luminosities</term>
<term>Radio points</term>
<term>Radio variability</term>
<term>Random light curves</term>
<term>Rding</term>
<term>Same source</term>
<term>Scatter</term>
<term>Seyfert galaxies</term>
<term>Show evidence</term>
<term>Softer state</term>
<term>Solid line</term>
<term>Spectral index</term>
<term>Spectral indices</term>
<term>Tting</term>
<term>Tting parameters</term>
<term>Turner pounds</term>
<term>Variability</term>
<term>Weak correlation</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr">
<term>Cosmologie</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">We present the results of a ∼3 yr campaign to monitor the low‐luminosity active galactic nucleus (LLAGN) NGC 7213 in the radio (4.8 and 8.4 GHz) and X‐ray bands (2–10 keV). With a reported X‐ray Eddington ratio of 7 × 10−4LEdd, NGC 7213 can be considered to be comparable to a hard‐state black hole X‐ray binary. We show that a weak correlation exists between the X‐ray and radio light curves. We use the cross‐correlation function to calculate a global time‐lag between events in the X‐ray and radio bands to be 24 ± 12 d lag (8.4 GHz radio lagging X‐ray) and 40 ± 13 d lag (4.8 GHz radio lagging X‐ray), respectively. The radio–radio light curves are extremely well correlated with a lag of 20.5 ± 12.9 d (4.8 GHz lagging 8.4 GHz). We explore the previously established scaling relationship between core radio and X‐ray luminosities and black hole mass LR∝M0.6‐0.8L0.6X, known as the ‘Fundamental Plane of black hole activity’, and show that NGC 7213 lies very close to the best‐fitting ‘global’ correlation for the plane as one of the most‐luminous LLAGNs. With a large number of quasi‐simultaneous radio and X‐ray observations, we explore for the first time the variations of a single AGN with respect to the Fundamental Plane. Although the average radio and X‐ray luminosities for NGC 7213 are in good agreement with the Plane, we show that there is intrinsic scatter with respect to the Plane for the individual data points.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Allemagne</li>
<li>Australie</li>
<li>Chili</li>
<li>France</li>
<li>Royaume-Uni</li>
</country>
</list>
<tree>
<noCountry>
<name sortKey="Breedt, E" sort="Breedt, E" uniqKey="Breedt E" first="E." last="Breedt">E. Breedt</name>
<name sortKey="Calvelo, D E" sort="Calvelo, D E" uniqKey="Calvelo D" first="D. E." last="Calvelo">D. E. Calvelo</name>
<name sortKey="Fender, R P" sort="Fender, R P" uniqKey="Fender R" first="R. P." last="Fender">R. P. Fender</name>
<name sortKey="Jamil, O" sort="Jamil, O" uniqKey="Jamil O" first="O." last="Jamil">O. Jamil</name>
<name sortKey="Mchardy, I" sort="Mchardy, I" uniqKey="Mchardy I" first="I." last="Mchardy">I. Mchardy</name>
<name sortKey="Uttley, P" sort="Uttley, P" uniqKey="Uttley P" first="P." last="Uttley">P. Uttley</name>
</noCountry>
<country name="Royaume-Uni">
<noRegion>
<name sortKey="Bell, M E" sort="Bell, M E" uniqKey="Bell M" first="M. E." last="Bell">M. E. Bell</name>
</noRegion>
</country>
<country name="Australie">
<noRegion>
<name sortKey="Tzioumis, T" sort="Tzioumis, T" uniqKey="Tzioumis T" first="T." last="Tzioumis">T. Tzioumis</name>
</noRegion>
</country>
<country name="Allemagne">
<noRegion>
<name sortKey="Arevalo, P" sort="Arevalo, P" uniqKey="Arevalo P" first="P." last="Arévalo">P. Arévalo</name>
</noRegion>
</country>
<country name="Chili">
<noRegion>
<name sortKey="Arevalo, P" sort="Arevalo, P" uniqKey="Arevalo P" first="P." last="Arévalo">P. Arévalo</name>
</noRegion>
</country>
<country name="France">
<noRegion>
<name sortKey="Kording, E" sort="Kording, E" uniqKey="Kording E" first="E." last="Körding">E. Körding</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 006279 | SxmlIndent | more

Ou

HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 006279 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Asie
   |area=    AustralieFrV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     ISTEX:8B40C620A40D05F69CB1F0C860A7194D684BA528
   |texte=   X‐ray and radio variability in the low‐luminosity active galactic nucleus NGC 7213
}}

Wicri

This area was generated with Dilib version V0.6.33.
Data generation: Tue Dec 5 10:43:12 2017. Site generation: Tue Mar 5 14:07:20 2024