The hard X-ray spectrum of NGC 5506 as seen by NuSTAR

Authors :: Matt, G.
Balokovic, M.
Marinucci, A.
Ballantyne, D. R.
Boggs, S. E.
Christensen, F. E.
Comastri, A.
Craig, W. W.
Gandhi, P.
Hailey, C. J.
Harrison, F. A.
Madejski, G.
Madsen, K. K.
Stern, D.
Zhang, W. W.
Publication Year :: 2014
Abstract: NuSTAR observed the bright Compton-thin, narrow line Seyfert 1 galaxy, NGC 5506, for about 56 ks. In agreement with past observations, the spectrum is well fit by a power law with Gamma~1.9, a distant reflection component and narrow ionized iron lines. A relativistically blurred reflection component is not required by the data. When an exponential high energy cutoff is added to the power law, a value of 720(+130,-190) keV (90% confidence level) is found. Even allowing for systematic uncertainties, we find a 3 sigma lower limit to the high-energy cutoff of 350 keV, the highest lower limit to the cutoff energy found so far in an AGN by NuSTAR.<br />Comment: 6 pages. MNRAS, in press