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http://hdl.handle.net/20.500.12386/30514
Titolo: | High-energy monitoring of NGC 4593 II. Broad-band spectral analysis: testing the two-corona model | Autori: | Middei, R. BIANCHI, STEFANO Petrucci, P. -O. Ursini, Francesco CAPPI, MASSIMO De Marco, B. DE ROSA, ALESSANDRA Malzac, J. Marinucci, A. Matt, G. PONTI, GABRIELE TORTOSA, ALESSIA |
Data pubblicazione: | 2019 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 483 | Fascicolo: | 4 | Da pagina:: | 4695 | Abstract: | It is widely believed that the primary X-ray emission of AGN is due to the Comptonization of optical-UV photons from a hot electron corona, while the origin of the `soft-excess' is still uncertain and matter of debate. A second Comptonization component, called warm corona, was therefore proposed to account for the soft-excess, and found in agreement with the optical-UV to X-ray emission of a sample of Seyfert galaxies. In this context, we exploit the broad-band XMM-Newton and NuSTAR simultaneous observations of the Seyfert galaxy NGC 4593 to further test the so-called `two corona model'. The NGC 4593 spectra are well reproduced by the model, from the optical/UV to the hard X-rays. Moreover, the data reveal a significant correlation between the hot and the warm corona parameters during our monitoring campaign. | URI: | http://hdl.handle.net/20.500.12386/30514 | URL: | https://academic.oup.com/mnras/article/483/4/4695/5245186?login=true http://arxiv.org/abs/1812.03180v1 |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/sty3379 | Bibcode ADS: | 2019MNRAS.483.4695M | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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