The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source Export

@article{citeulike:3579245, abstract = {We present an analysis of the extreme obscuration variability observed during an XMM-Newton 5-days continuous monitoring of the AGN in NGC 1365. The source was in a reflection-dominated state in the first \~{}1.5 days, then a strong increase of the 7-10 keV emission was observed in \~{}10 hours, followed by a symmetric decrease. The spectral analysis of the different states clearly shows that this variation is due to an uncovering of the X-ray source. From this observation we estimate a size of the X-ray source D\_S\<10^13 cm, a distance of the obscuring clouds R\~{}10^16 cm and a density n\~{}10^11 cm^{-3}. These values suggest that the X-ray absorption/reflection originate from the broad line region clouds. This is also supported by the resolved width of the iron narrow Kalpha emission line, consistent with the width of the broad Hbeta line.}, archivePrefix = {arXiv}, author = {Risaliti, G. and Salvati, M. and Elvis, M. and Fabbiano, G. and Baldi, A. and Bianchi, S. and Braito, V. and Guainazzi, M. and Matt, G. and Miniutti, G. and Reeves, J. and Soria, R. and Zezas, A.}, citeulike-article-id = {3579245}, citeulike-linkout-0 = {http://arxiv.org/abs/0811.1594}, citeulike-linkout-1 = {http://arxiv.org/pdf/0811.1594}, day = {10}, eprint = {0811.1594}, keywords = {agn, n1365, obscured, xmm-newton}, month = {Nov}, posted-at = {2008-11-19 21:48:36}, priority = {2}, title = {The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source}, url = {http://arxiv.org/abs/0811.1594}, year = {2008} }

TY - JOUR ID - citeulike:3579245 L3 - citeulike-article-id:3579245 N2 - We present an analysis of the extreme obscuration variability observed during an XMM-Newton 5-days continuous monitoring of the AGN in NGC 1365. The source was in a reflection-dominated state in the first ~1.5 days, then a strong increase of the 7-10 keV emission was observed in ~10 hours, followed by a symmetric decrease. The spectral analysis of the different states clearly shows that this variation is due to an uncovering of the X-ray source. From this observation we estimate a size of the X-ray source D_S<10^13 cm, a distance of the obscuring clouds R~10^16 cm and a density n~10^11 cm^{-3}. These values suggest that the X-ray absorption/reflection originate from the broad line region clouds. This is also supported by the resolved width of the iron narrow Kalpha emission line, consistent with the width of the broad Hbeta line. TI - The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source KW - agn KW - n1365 KW - obscured KW - xmm-newton AU - Risaliti, G AU - Salvati, M AU - Elvis, M AU - Fabbiano, G AU - Baldi, A AU - Bianchi, S AU - Braito, V AU - Guainazzi, M AU - Matt, G AU - Miniutti, G AU - Reeves, J AU - Soria, R AU - Zezas, A PY - 2008/Nov/10/ UR - http://arxiv.org/abs/0811.1594 ER -