XMM-Newton view of the double-peaked FeK alpha complex in E1821+643
| العنوان: | XMM-Newton view of the double-peaked FeK alpha complex in E1821+643 |
|---|---|
| المؤلفون: | Enrico Piconcelli, E. Jimenez-Bailon, Giorgio Matt, Matteo Guainazzi, Maria Santos-Lleo, P. M. Rodriguez-Pascual |
| المساهمون: | Jimenez Bailon, E, Santos Lleo, M, Piconcelli, E, Matt, Giorgio, Guainazzi, M, Rodriguez Pascual, P. |
| سنة النشر: | 2007 |
| مصطلحات موضوعية: | Physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Quasar, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Rest frame, Spectral line, Space and Planetary Science, Intergalactic medium, K-alpha, Emission spectrum, Galaxy cluster, Astrophysics::Galaxy Astrophysics, Line (formation) |
| الوصف: | We present the results of the analysis of the hard band XMM-Newton spectra of the luminous, L(2-10keV)~3.4E+45 erg/s, radio-quiet quasar, E1821+643. Two emission features were observed in the 6-7 keV rest frame band, confirming previous Chandra detection of these structures. We interpret these features as two single emission lines, one consistent with the neutral Fe K-alpha line at 6.4 keV and the other most likely due to FeXXVI. If related to the quasar, the high-energy emission line should originate in highly ionised matter, i.e. the accretion disc or the clouds of the emission line regions. Alternatively, it may be related to the intergalactic medium of the rich galaxy cluster in which E1821+643 is embedded. A composite broad emission line in combination with an absorption line model, however, also fits the data well. We discuss the possible physical interpretations of the origin of these features. Comment: Accepted for publication in A&A, 7 pages and 7 figures |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::173d3b28324c5f66938ea9138a366942 https://hdl.handle.net/11590/124982 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....173d3b28324c5f66938ea9138a366942 |
| قاعدة البيانات: | OpenAIRE |
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