Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327.1059j&link_type=abstract
Astronomische Nachrichten, Vol.327, Issue 10, p.1059-1062
Astronomy and Astrophysics
Astronomy
1
Galaxies: Active, Galaxies: Individual: 4U 1344-60, X-Ray: Galaxies
Scientific paper
We present the analysis of optical and X-ray XMM-Newton data of the source 4U 1344-60. On the basis of the optical data we propose to classify 4U 1344-60 as a Seyfert 1.5 galaxy and we measured a redshift value z=0.012±0.001. The observed X-ray spectrum is complex. The continuum emission can be described as a power law obscured by two neutral absorption components. 4U 1344-60 exhibits a broad and skewed iron line at 6.4 keV most likely originated in a few gravitational radius of an accretion disc. The analysis also reveals the presence of two narrow emission line-like features at ˜4.9 keV and ˜5.3 keV. Assuming that hot spots on the surface of the accretion disc, orbiting very close to the black hole is responsible of these emission lines, the accretion disc would present an inclination of 20o and the active regions would be located in the 6-10 R_g radius range.
Bianchi Simone
Guainazzi Matteo
Jimenez-Bailon Elena
Martocchia Andrea
Matt Giorgia
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