Please use this identifier to cite or link to this item:
http://hdl.handle.net/2307/286
DC Field | Value | Language |
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dc.contributor.author | Matt, Giorgio | - |
dc.contributor.author | Bianchi, Stefano | - |
dc.contributor.author | Awaki, Hisamitsu | - |
dc.contributor.author | Comastri, Andrea | - |
dc.contributor.author | Guainazzi, Matteo | - |
dc.contributor.author | Iwasawa, Kazushi | - |
dc.contributor.author | Jimenez-Bailon, Elena | - |
dc.contributor.author | Nicastro, Fabrizio | - |
dc.date.accessioned | 2010-07-09T10:22:59Z | - |
dc.date.available | 2010-07-09T10:22:59Z | - |
dc.date.issued | 2009-03 | - |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.uri | http://hdl.handle.net/2307/286 | - |
dc.description.abstract | Context. In recent years, several Seyfert 2 galaxies have beendiscovered that change state when observed in X-rays a few years apart,switching from Compton-thin to reflection-dominated or viceversa.Aims. We observed a member of this class of "Changing-look" sources,the Phoenix galaxy, with Suzaku, with the aim of better understandingthe nature of the variations.Methods. The Suzaku spectrum was analyzed, and the results comparedwith previous ASCA and XMM-Newton observations.Results. The source was caught in a Compton-thin state, as inXMM-Newton, but differently from ASCA. Comparing the Suzaku andXMM-Newton observations, a variation in the column density of theabsorber on a time scale of years is discovered. A similar change, buton much shorter time scales (i.e. ks) may also explain the count-ratevariations during the Suzaku observations. A soft excess is alsopresent, likely due to continuum and line emission from photoionizedcircumnuclear matter. | en |
dc.language.iso | en | en |
dc.publisher | EDP Sciences | en |
dc.relation.ispartof | Astronomy & Astrophysics | en |
dc.subject | X-RAY-EMISSION | en |
dc.subject | ACTIVE GALACTIC NUCLEI | en |
dc.subject | SEYFERT 2 GALAXIES | en |
dc.subject | K-ALPHA | en |
dc.subject | LINE | en |
dc.subject | OBSCURED AGN | en |
dc.subject | COMPTON SHOULDER | en |
dc.subject | XMM-NEWTON | en |
dc.subject | IRON | en |
dc.subject | ABUNDANCES | en |
dc.subject | SPECTRUM | en |
dc.title | Suzaku observation of the Phoenix galaxy | en |
dc.type | Article | en |
dc.subject.miur | Settori Disciplinari MIUR::Scienze fisiche::ASTRONOMIA E ASTROFISICA | en |
dc.subject.miur | Scienze fisiche | - |
dc.subject.isicrui | Categorie ISI-CRUI::Scienze fisiche::Physics | en |
dc.subject.isicrui | Scienze fisiche | - |
dc.subject.anagraferoma3 | Scienze fisiche | en |
dc.relation.volumenumber | 496 | en |
dc.relation.pagenumber | 653-658 | en |
dc.identifier.doi | 10.1051/0004-6361/200811049 | - |
dc.relation.issuenumber | 3 | en |
dc.description.romatrecurrent | Dipartimento di Fisica 'Edoardo Amaldi' | * |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | other | - |
Appears in Collections: | A - Articolo su rivista X_Dipartimento di Fisica 'Edoardo Amaldi' |
Files in This Item:
File | Description | Size | Format | |
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suzakuobservationsphoenix.pdf | 173.47 kB | Adobe PDF | View/Open |
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