Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-03-27
Astronomy and Astrophysics
Astrophysics
Accepted for publication in Astronomy & Astrophysics
Scientific paper
10.1051/0004-6361:20064956
We present analysis of the optical and X-ray spectra of the low Galactic latitude bright (F(2-10) = 3.6 10^{-11} erg/cm2/s) source 4U 1344-60. On the basis of the optical data we propose to classify 4U 1344-60 as an intermediate type Seyfert galaxy and we measure a value of z=0.012+/-0.001 for its redshift. From the XMM-Newton observation we find that the overall X-ray spectral shape of 4U 1344-60 is complex and can be described by a power-law continuum (Gamma ~ 1.55) obscured by two neutral absorption components (Nh(f) ~ 10^{22} cm^{-2} and Nh(p) ~ 4 10^{22} cm^{-2}), the latter covering only the ~50% of the primary X-ray source. The X-ray data therefore lend support to our classification of 4U 1344-60. It exhibits a broad and skewed Fe Kalpha line at 6.4 keV, which suggests the existence of an accretion disk that is able to reprocess the primary continuum down to a few gravitational radii. Such a line represents one of the clearest examples of a relativistic line observed by XMM-Newton so far. Our analysis has also revealed the marginal presence of two narrow line-like emission features at ~4.9 and ~5.2 keV.
Bianchi Simone
Guainazzi Matteo
Jimenez-Bailon Elena
Martocchia Andrea
Matt Giorgia
No associations
LandOfFree
4U 1344-60: a bright intermediate Seyfert galaxy at z=0.012 with a relativistic Fe Kalpha emission line does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with 4U 1344-60: a bright intermediate Seyfert galaxy at z=0.012 with a relativistic Fe Kalpha emission line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 4U 1344-60: a bright intermediate Seyfert galaxy at z=0.012 with a relativistic Fe Kalpha emission line will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-412885