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

Journal Article · Wed Jan 14 00:00:00 EST 2015 · Monthly Notices of the Royal Astronomical Society

DOI:https://doi.org/10.1093/mnras/stu2653· OSTI ID:1313944

Matt, G.; Balokovi , 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.

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 fitted by a power law with Γ ~ 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 $$+130\atop{-190}$$ keV (90 percent confidence level) is found. Even allowing for systematic uncertainties, we find a 3σ 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.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Aeronautics and Space Administration (NASA)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1313944
• Report Number(s): SLAC-PUB--16798; arXiv:1412.4541
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 4 Vol. 447; ISSN 0035-8711
• Publisher: Royal Astronomical Society
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
accretion
accretion discs
galaxies: active
galaxies: individual: NGC 5506