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Marinucci, A; Matt, G; Bianchi, S; Lu, T. N; Arevalo, P; Baloković, M; Ballantyne, D; Bauer, F. E; Boggs, S. E; Christensen, F. E; Craig, W. W; Gandhi, P; Hailey, C. J; Harrison, F; Puccetti, S; Rivers, E; Walton, D. J; Stern, D; Zhang, W
Monthly notices of the Royal Astronomical Society, 02/2015, Letnik: 447, Številka: 1Journal Article
We present NuSTAR observations of the bright Seyfert 2 galaxy NGC 2110 obtained in 2012, when the source was at the highest flux level ever observed, and in 2013, when the source was at a more typical flux level. We include archival observations from other X-ray satellites, namely XMM–Newton, Suzaku, BeppoSAX, Chandra and Swift. Simultaneous NuSTAR and Swift broad-band spectra (in the 3–80 keV range) indicate a cutoff energy E c > 210 keV, with no detectable contribution from Compton reflection. NGC 2110 is one of the very few sources where no evidence for distant Compton-thick scattering is found and, by using temporal information collected over more than a decade, we investigate variations of the iron Kα line on time-scales of years. The Fe Kα line is likely the sum of two components: one constant (originating from distant Compton-thick material) and the other one variable and linearly correlated with the source flux (possibly arising from Compton-thin material much closer to the black hole).
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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