Please use this identifier to cite or link to this item:
http://hdl.handle.net/2307/305
Title: | The XMM-Newton long look of NGC 1365: uncovering of the obscured X-raysource | Authors: | Risaliti, Guido Salvati, Marco Elvis, Martin Fabbiano, Giuseppina Baldi, Alessandro Bianchi, Stefano Braito, Valentina Guainazzi, Matteo Matt, Giorgio Miniutti, Giovanni Reeves, James Soria, Roberto Zezas, Andreas |
Keywords: | ACTIVE GALACTIC NUCLEI BLACK-HOLES LUMINOSITY GALAXIES NGC-1365 LINES |
Issue Date: | 2009 | Publisher: | Wiley-Blackwell | Abstract: | We present an analysis of the extreme obscuration variability observedduring an XMM-Newton 5-d continuous monitoring of the active galacticnuclei (AGN) in NGC 1365. The source was in a reflection-dominatedstate in the first similar to 1.5 d, then a strong increase in the 7-10keV emission was observed in similar to 10 h, followed by a symmetricdecrease. The spectral analysis of the different states clearly showsthat this variation is due to an uncovering of the X-ray source. Fromthis observation, we estimate a size of the X-ray source D-S < 10(13)cm, a distance of the obscuring clouds R similar to 10(16) cm and adensity n similar to 10(11) cm(-3). These values suggest that the X-rayabsorption/reflection originates from the broad-line region clouds.This is also supported by the resolved width of the iron narrow K alphaemission line, consistent with the width of the broad H beta line. | URI: | http://hdl.handle.net/2307/305 | ISSN: | 0035-8711 | DOI: | 10.1111/j.1745-3933.2008.00580.x |
Appears in Collections: | A - Articolo su rivista X_Dipartimento di Fisica 'Edoardo Amaldi' |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
thexmmnewtonlong.pdf | 727.77 kB | Adobe PDF | Request a copy |
Page view(s)
54
checked on May 2, 2024
Download(s)
7
checked on May 2, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.