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Measurement of coronal properties of Seyfert galaxies from NuSTAR’s hard X-ray spectrum

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dc.contributor.author Priyanka Rani
dc.contributor.author Stalin, C. S
dc.date.accessioned 2020-11-11T01:44:52Z
dc.date.available 2020-11-11T01:44:52Z
dc.date.issued 2018-02
dc.identifier.citation Journal of Astrophysics and Astronomy, Vol. 39, No. 1, 15 en_US
dc.identifier.issn 0250-6335
dc.identifier.uri http://prints.iiap.res.in/handle/2248/6901
dc.description Open Access © Indian Academy of Sciences; http://www.ias.ac.in/describe/article/joaa/039/01/0015||https://doi.org/10.1007/s12036-017-9502-5 en_US
dc.description.abstract Precise measurement of the coronal properties of Active Galactic Nuclei (AGN) requires the availability of high signal-to-noise ratio data covering a wide range of X-ray energies. The Nuclear Spectroscopic Telescope Array (NuSTAR) which is highly sensitive to earlier missions in its operational energy range of 3–79 keV, allows us to arrive at precise estimates of the coronal parameters such as cut-off energy ( Ecut), coronal temperature ( kTe) and geometry of the corona at least for sources that have Ecut within the energy range of NuSTAR. In this paper, we present our preliminary results on the spectral analysis of two Seyfert galaxies namely 3C 120 and NGC 4151 using NuSTAR observations in the 3–79 keV band. We investigated the continuum and coronal parameters, the photon index Γ, Ecut and kTe. By fitting the X-ray spectrum of 3C 120 and NGC 4151 with a simple phenomenological model, we found that both the sources showed a clear cut-off in their spectrum. en_US
dc.language.iso en en_US
dc.publisher Indian Academy of Sciences en_US
dc.subject Galaxies: active en_US
dc.subject Galaxies: Seyfert en_US
dc.subject Galaxies:quasars: individual (3C 120, NGC 4151) en_US
dc.title Measurement of coronal properties of Seyfert galaxies from NuSTAR’s hard X-ray spectrum en_US
dc.type Article en_US


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